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SMARC T335x - Embedian Inc, The leading ARM Based Embedded

1. N VDD_LANB MDIO MDC RXD1 VDD1A RXDO VDD2A nINT REFCLKO RXER PHYADO TXEN TXDO TXD1 CRS_DV YSAONIS NAG 1O9 39043 XTAL1 XTAL2 Figure 5 Fast Ethernet Connection from Sitara AM335x to SMSC LAN8720A 27 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Sitara AM335x and SMSC LAN8 20A implementation is shown in the following table TIAM335x CPU SMSC Net Names LAN8720A Mode Pin Name Pin Pin Name M17 ModeO MDIO DATA 12 MDIO MDIO_DATA Serial Management Interface data input output M18 ModeO MDIO_CLK 13 MDC MDIO_CLK Serial Management Interface clock L15 Model RMII1_RXD1 f RXD1 RMII1 RXD1 Bit 1 of the 2 data bits that are sent by the transceiver on the receive path M16 Model RMII1 RXD 8 RXD RMII1 RXD Bit 0 of the 2 data bits that are sent by the transceiver on the receive path H18 Mode0 RMII1_REFCLK 14 nINT REFCLKO RMII1_RXCLK Reference clock J15 Model RMII1_RXER 10 RXER PHYAD RMII1 RXER This signal is asserted to indicate that an error was detected somewhere in the frame presently being transferred from the transceiver Indicates that valid J16 Mode1 RMII1_TXEN 16 TXEN RMII1_TXEN transmission data is present on TXD 1 0 K17 Mode RMII1 TXDO 17 TXD RMII1_ TXDO The MAC transmits data to the transceiver using this signal K16 Model RMII1_TXD1 18 TXD1 RMII1_TXD1 The MAC transmits data to the transceiver using this signal 28 SMARC T3
2. 0000 U6 HOLE4 SPI FLASH EEPROM cj AM335x CPU eMMC FLASH e errbedaan 000000 ELE U10 000000 Ethernet PHY SMARC T335x Rev 1 0 EDGE FINGER PRIMARY SIDE P1 Figure 14 SMARC T335X edge finger primary pins 61 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc U15 00000 00000 DDR3 TERMINATION REGULATOR LINE DECODER HEX SCHMITT INVERTER EDGE FINGER SECONDARY SIDE Figure 15 SMARC T335X edge finger secondary pins The next tables describe each pin its properties and its use on the module and development board The SMARC Edge Finger column shows the connection of the signals defined in the SMARC specification The Sitara AM335x CPU column shows the connection of the CPU signals on the module The format of this column is Ball Mode Signal Name where Signal Name is the chip where the signals are connected and Bal is the name of the pad where the signals are connected as they are defined in the AM335x s datasheet Pinout Legend Input O Output I O Input or output P Power Al Analogue input AO Analogue output AlO Analogue Input or analogue output OD Open Drain Signal Low level active signal 62 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Pin Name Ball Mode Signal Name P1 PCAM PXL CK1 P2 GND P3 CSI1 CK PCAM D P4 CSI1 CK PCAM D1 P5 PCAM DE P6 PCAM MCK
3. GPIO 7 GPIO1 25 GPIO1 24 GPIO2 4 GPIO2 3 GPIO1 28 GPIO1 29 GPIO2 0 GPIO2 1 GPIO3 7 GPIO3 8 SMARC T335X Edge Golden Finger Pink P108 P109 P110 P111 P112 P113 P114 P115 P116 P117 P118 P119 Pin Name GPIO CAM _PWR GPIO1 CAM1_PWR GPIO2 CAM _RST GPIO3 CAM1_RST GPIO4 HDA_RST GPIO5 PWM_OUT GPIO6 TACHIN GPIO7 PCAM_FLD GPIO8 CAN _ERR GPIO9 CAN1_ERR GPIO10 GP1IO11 SMARC T335x Computer on Module User s Manual v 1 02 Net Names GPIOO GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIOS GPIO9 GPI019 GPI011 Camera 0 Power Enable active low output Camera 1 Power Enable active low output Camera 0 Reset active low output Camera 1 Reset active low output HD Audio Reset active low output PWM output Tachometer input used with the GPIOS PWM PCAM_FLD Field signal input CANO Error signal active low input CAN1 Error signal active low input 44 Embedian Inc 2 1 17 4 wire Resistive Touch Interface Resistive touch interface is not defined in SMARC hardware specification However to support legacy touch devices SMARC T335x has 4 wire resistive touch interface on AFB Alternative Function Block pins Touchscreen controller on Sitara AM335x is an 8 channel general purpose ADC with support for interleaving Touch Screen conversions for a 4 wire resistive panel
4. transcribed stored in a retrieval system or translated into any language or computer language in any form or by any means electronic mechanical photocopying recording or otherwise without the express written permission of EMBEDIAN Trademarks The following lists the trademarks of components used in this board ARM is a registered trademark of ARM Limited Android is a registered trademark of Google Linux is a registered trademark of Linus Torvalds WinCE is a registered trademark of Microsoft Tl is a registered trademark of Texas Instruments All other products and trademarks mentioned in this manual are trademarks of their respective owners Standards EMBEDIAN is ISO 9001 2008 and 1S0O14001 certified manufacturer SMARC is an SGET standard for ARM computer on module Warranty This EMBEDIAN product is warranted against defects in material and workmanship for the warranty period from the date of shipment During the warranty period EMBEDIAN will at its discretion decide to repair or replace defective products Within the warranty period the repair of products is free of charge as long as warranty conditions are observed The warranty does not apply to defects resulting from improper or inadequate maintenance or handling by the buyer unauthorized modification or misuse operation outside of the products environmental specifications or improper installation or maintenance SMARC T335x Computer on Module User s Manual
5. 1 Battery Charger power domain can be neglected if the system is not battery powered only 2 SMARC Module power domain 3 Carrier Circuits power domain The Battery Charger domain includes circuits that are active whenever either charger input power and or battery power are available These circuits may include power supply supervisor s battery chargers fuel gauges and depending on the battery configuration switching power section s to step down a high incoming battery voltage The SMARC Module domain includes the SMARC module The Carrier Circuits domain includes everything else and does not include items from the Battery Charger and Module domain even though they may be mounted on the Carrier This is illustrated in the figure below 88 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Module Power Domain Figure 16 System Power Domains 89 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 4 2 Terminations 4 2 1 Module Terminations The Module signals listed below will be terminated on the Module The terminations follow the guidance given in the table below Signal Name Series Termination Parallel Termination Noes I2C PM DAT 2 2K pull up to 1 8V I2C PM CK 2 2K pull up to 1 8V I2C LCD DAT 2 2K pull up to VDD IO I2C LCD CK 2 2K pull up to VDD IO I2C CAM DAT 2 2K pull up to VDD IO I2C CAM CK 2 2K pull up to VDD IO I2C GP DAT 2 2K pull up to VDD IO I2
6. A resistive touchscreen operates by applying a voltage across a resistive network and measuring the change in resistance at a given point on the matrix where the screen is touched by an input stylus or finger The change in the resistance ratio marks the location on the touchscreen 4 wire TSC has been implemented on SMARC 1335X module TSC signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pin Name 4 wire TSC B6 AINO S18 AFB1 OUT XPUL XP Plus X axis on off control signal B7 AIN2 S19 AFB2 OUT YPLL YP Plus Y axis on off control signal C7 AIN1 S21 AFB4 IN XNUR XM Minus X axis on off control signal A7 AIN3 S22 AFB5 IN YNLR YM Minus Y axis on off control signal 45 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 18 Watchdog Timer Interface Sitara AM335x features an internal WDT Embedian s Linux kernel enables the internal AM335x WDT and makes this functionality available to users through the standard Linux Watchdog API A description of the API is available following the link below http www kernel org doc Documentation watchdog watchdog api txt WDT signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pint Pin Name Watchdog Timer R7 Mode2 Timer4 S145 WDT_TIME_OUT WDT_TIMER_
7. B12 Mode3 MCASP1_ACLKX S42 I2S CK MCASP1_ACLKX Digital audio clock Note TLV320AIC3106 I2S audio codec is used in SmartBase T33 evaluation carrier board An external 24 576 Mhz crystal is used as a reference clock output to audio codec instead of Pin S38 Theoretically both ways will work 38 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 13 Asynchronous Serial Port The SMARC T335X module supports three UARTs SERO 1 3 UART SERO supports flow control signals RTS CTS UART SER7 and SERS do not support flow control When working with software SER 3 is used for AM335x CPU debugging console port The module asynchronous serial port signals have a 3 3V level signal swing They can be converted to RS232 level and polarity signals by using a Suitable RS232 transceiver Almost all transceivers available accept a 3 3V signal level example include the Texas Instruments MAX3243 Note that RS232 transceivers invert the signal a logic 1 is a negative voltage 3 0V to 15V and a logic O a positive voltage 3 0V to 15V on the RS232 line Asynchronous serial ports interface signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pin Name SERO Port E16 Mode0 JUARTO TXD P129 SER TX SERO TX Asynchronous serial port data out E15 Mode0 UART _RXD P130 SER RX SERO RX Asynchronous serial port data i
8. LCD_DATA 17 0 For Sitara AM335x the extra bits used for a 24 bit color implementation come out on TI LCD DATA 23 18 Since 18 bit configuration and 24 bit configuration use the same MSB signals we can say 18 bit configuration is higher bits subset 24 bit configuration from the hardware point of view The SMARC has a different convention Red is LCD D 23 16 Blue is LCD D 15 8 and Green is LCD D 7 For 24 bit implementations all bits are used For 18 bit implementations in SMARC the least significant bits Red LCD D 17 16 Green LCD D 9 8 Blue LCD D 1 07 are dropped 20 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc T1 R4 R3 R2 R1 U13 R12 T11 U3 U2 U1 T4 T3 T2 T12 T10 TS V4 V3 V2 U4 V13 U12 U10 TI AM335x CPU Mode0 Mode0 Mode0 Mode0 Mode0 Mode1 Mode1 Modet1 Mode0 Mode0 Mode0 Mode0 Mode0 Mode0 Mode1 Modet1 Mode0 Mode0 Mode0 Mode0 Mode0 Mode0 Mode1 Mode1 Pin Name LCD_DATA4 LCD_DATA3 LCD_DATA2 LCD_DATA1 LCD DATA LCD DATA16 LCD DATA1S LCD DATA21 LCD DATA1O LCD DATA9 LCD DATAS LCD DATA7 LCD DATA6 LCD DATAS LCD DATA19 LCD DATA22 LCD DATA1S LCD DATA14 LCD DATA13 LCD DATA12 LCD DATA11 LCD DATA17 LCD DATA20 LCD DATA23 SMARC T335X Edge Golden Finger S118 S117 S116 S115 S114 S113 S112 S111 S109 S108 S107 S106 S105
9. This is an active low input to the Module from the CAN bus transceiver A CAN transceiver on carrier is necessary to adapt the signals from SMARC golden finger edge connector which is TTL levels to the physical layer used Because the CAN bus system is typically used to connect multiple systems and is often run over very long distances both power supply and signal path must be electrically isolated to meet a certain isolation level Users can refer the SMARC T335x Carrier Board Hardware Design Guide or CAN transceiver application note such as TI 1801050 for more details 43 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 16 GPIOs The SMARC T335X module supports 12 GPIOs per the SMARC specification Specific alternate functions are assigned to some GPIOs such as PWM Tachometer capability Camera support CAN Error Signaling and HD Audio reset All pins are capable of bi directional operation A default direction of operation is assigned with half of them GPIOO GPIO5 for use as outputs and the remainder GPIO6 GPIO11 as inputs by SMARC hardware specification GPIO signals are exposed on the SMARC golden finger edge connector as shown below Ball J17 C18 U16 V16 U6 T7 U18 V6 713 V12 C14 B14 TI AM335x CPU Mode Mode7 Mode7 Mode7 Mode Mode Mode Mode Mode Mode Mode Mode Mode Pin Name GPIO3 4
10. resistors and diodes to pulled to a positive supply rail The open drain GBE status signals GBE LINK100 GBE LINK1000H and GBE LINK ACT amp if used need Carrier based current limiting resistors and LEDs The LED may be integrated into a Carrier RJ45 jack A resistor of 68 ohms and a LED with the anode tied to Carrier 3 3V is typical LVDS LCD 100 ohm resistive termination across the differential pairs at the endpoint of the signal path usually on the display assembly 92 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 4 3 Boot Device Selection SMARC hardware specification defines three pins BOOT SEL 0 2 that allow the Carrier board user to select from eight possible boot devices Sitara AM335x bases on SYSBOOT configuration to determine the boot devices The boot select utilzes SYSBOOT and line decoder de multiplexer logic to meet the SMARC specification The BOOT SELXx pins are weakly pulled up on the Module and the pin states decoded by module logic The Carrier shall either leave the Module pin Not Connected Float in the table below or shall pull the pin to GND per the table below Carrier Connection Boot Source BOOT SEL2fE BOOT SELIYI BOOT SELO0f 0 GND GND Float Carrier SD Card 1 Float Float GND Module eMMC Flash 2 GND Float Float Carrier SPI 93 SMARC T335x Computer on Module User s Manual v 1 02
11. 40 C 85 C is also available with different part number SMARC T335x l 2 5 2 Humidity Operating 10 to 90 RH non condensing Non operating 5 to 95 RH non condensing 2 5 3 ROHS Compliance The SMARC T335x module is compliant to the 2002 95 EC RoHS directive 59 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter Connector PinOut This Chapter gives detail pinout of SMARC T335X golden finger edge connector Section include e SMARC T335X Connector Pin Mapping 60 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter 3 Connector Pinout The Module pins are designated as P1 P156 on the Module Primary Top side and S1 S158 on the Module Secondary Bottom side There are total of 314 pins on the Module The connector is sometimes identified as a 321 pin connector but 7 pins are lost to the key 4 on the primary side and 3 on secondary side The Secondary Bottom side faces the Carrier board when a normal or standard Carrier connector is used The SMARC T335x module pins are deliberately numbered as P1 P156 and S1 158 for clarity and to differentiate the SMARC Module from MXM3 graphics modules which use the same connector but use the pins for very different functions MXM3 cards and MXM3 baseboard connectors use different pin numbering scheme 3 1 SMARC T335X Connector Pin Mapping P1 o Tie DDR3 DQ 0 15 t rte cn3 0000000000
12. Case Command prompt after login No application running OPP OPP100 ARM 550 MHz DDR 200 MHz L3 200 MHz L4 100 MHz Measured DMIPS MHz 1 8 1 9 DMIPS MHz Voltage Voltage Current Power Power Supply Nominal Rating Drop V mA mW mV VDD_CORE 1 1V 4 9 10 1 094 181 92 198 97 VDD_MPU 1 1V 1 3V 4 5 56 1 104 111 20 122 73 VDDS RTC 1 8V 5 0 72 1 800 0 36 0 65 VDDS DDR 1 8V 5 1 5V 9 03 1 793 37 62 67 44 5 VDDS 1 8V 5 0 13 1 796 0 55 1 00 VDDS SRAM CORE BG 1 8V 5 2 66 1 809 1 38 2 40 VDDS SRAM MPU BB 1 8V 5 2 70 1 809 1 35 2 44 VDDS PLL DDR 1 8V 5 1 69 1 810 0 84 1 52 VDDS PLL CORE LCD 1 8V 5 15 98 1 797 7 99 14 36 VDDS_PLL_MPU 1 8V 5 3 38 1 809 1 69 3 05 VDDS_OSC 1 8V 5 1 53 1 811 0 67 1 21 VDDA1P8V USBO 1 1 8V 5 16 15 1 801 16 15 29 07 VDDAS3P3V USBO 1 3 3V 5 521 3 309 2 61 8 62 VDDA_ADC 1 8V 5 0 45 1 816 0 45 0 82 VDDSHV1 1 8 3 3 V 5 0 02 3 324 0 08 0 28 VDDSHV2 1 8 3 3 V 5 0 00 3 292 0 00 0 00 VDDSHV3 1 8 3 3 V 5 0 01 3 325 0 06 0 19 VDDSHV4 1 8 3 3 V 5 0 01 3 292 0 03 0 11 VDDSHV5 1 8 3 3 V 5 0 93 3 323 3 89 12 92 VDDSHV6 1 8 3 3 V 5 1 35 3 322 5 64 18 73 Total 486 51 58 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 5 Environmental Specifications 2 5 1 Operating Temperature The SMARC T335x module operates from 0 C to 60 C air temperature without a passive heat sink arrangement Industrial temperature
13. Control Systems e Fire Alarms e Smart Grid and Smart Metering e E Bike e HMI In Home Display e Smart Toll Systems e Connected Vending Machines e Fiscal Printer Weighing Scales Currency Counter e And more Complete and cost efficient Embedian evaluation kits for Ubuntu 12 04 Android ICS and Microsoft Windows Embedded Compact 7 allow immediate and professional embedded product development with dramatically reduced design risk and time to market 1 1 Features and Functionality The SMARC T335X module is based on the AM335x processor from Texas Instruments This processor offers a high number of interfaces Most of these interfaces are multiplexed and are not available simultaneously The module has the following features e SMARC ULP COM compliant in an 82mm x 50mm form factor e Processor TI Sitara AM335x ARM Cortex A8 up to 1GHz e Memory Onboard 4GB eMMC Flash and 4MB SPI NOR Flash e Onboard 512MB DDR3 606Mhz 10 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc e Networking 2 x 10 100 Mbps Ethernet e Display Parallel LCD 18 bit 24 bit e Expansion 1 x SDHC SDIO 1 x USB 2 0 Host e USB 1x USB 2 0 Host 1x USB 2 0 OTG e A single 4KB EEPROM is provided on I2C0 that holds the board information This information includes board name serial number and revision information e Additional Interface 3 x UARTs 2 x SPI 3 x 12C 1x 12S 1 x CAN Bus 1x PWM 12 x GPIOs 4x ADCs WDT e SW Suppor
14. Embedian Inc Chapter Handshaking between SMARC Module and Carrier This Chapter points out the handshaking rule between SMARC module and carrier Section include e SMARC T335X Module Power e Terminations e Boot Select 85 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter 4 Handshaking between SMARC T335x Module and Carrier SMARC module has specific handshaking rules to the carrier by SMARC hardware specification To design the carrier board users need to follow these rules or it might not boot up Some pull up and pull down also need to be cared to make all functions work 4 1 SMARC 1335x Module Power 4 1 1 Input Voltage Main Power Rail The allowable Module DC input voltage range for T335x is from 3 35V to 5 25V This voltage is brought in on the VDD IN pins and returned through the numerous GND pins on the connector The SMARC specification defines the input voltage range should extend down to 3 0V The SMARC T335X lower limit is determined by a non volatile register setting in the TI PMIC used and is set 3 35V by default A single 5V DC input is recommended Ten pins are allocated to VDD IN The connector pin current rating is 0 5A per pin This works out to 5A total for the 10 pins At the lowest allowed Module input voltage this would allow up to 16 75W of electrical power to be brought in with no de rating on the connector current capability With a 40 connector current de rating
15. MDI1 Differential Transmit Receive Negative Channel 1 3 LED1 REGOFF S55 AFB8 PTIO GBE1 LINK ACK amp Link Activity Indication LED Driven low on Link 10 100 or 1000 mbps Blinks on Activity Could be able to sink 24mA or more Carrier LED current 2 LED2 NINTSEL S23 AFB6 PTIO GBE1 LINK100 Link Speed Indication LED for 100Mbps Could be able to sink 24mA or more Carrier LED current Caution Due to SMARC T335x support Fast Ethernet instead of Gigabit LAN GBE MDI2 and and GBE_MDI3 and are not connected to the golden finger connector 33 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 9 1 Termination on Module The SMSC LAN8720A Module signals listed below will be terminated on the Module The terminations follow the guidance given in the table below LAN8720A Series Termination Signal Name Parallel Termination TXP pin 21 TXN pin 22 RXP pin 23 RXN pin 22 LED1 REGOFF pin 3 LED2 nINTSEL pin 2 49 90hm 1 0 pull up resistor to VDDA created from 3 3V through a ferrite bead 49 9ohm 1 0 pull up resistor to VDDA 49 9ohm 1 0 pull up resistor to VDDA 49 90hm 1 0 pull up resistor to VDDA 10kohm 1 0 pull down resistor to ground 10kohm 1 0 pull down resistor to ground 34 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 10 SDIO Interface Sitara AM335x CPU is configured to suppo
16. O S118 LCD_D23 T1 Mode0 LCD DATA4 O S119 GND RB Ground S120 LCD DE R6 Mode0 LCD AC BIAS O Display Enable EN signal is high during the active display line low otherwise S121 LCD VS Us Mode0 LCD VSYNC O Vertical Sync high pulse indicates the start of a new display frame S122 LCD HS R5 Mode0 LCD HSYNC O Horizontal Sync high pulse indicates the start ofa new horizontal display line S123 LCD PCK V5 Mode0 LCD PCLK O Pixel clock display data transitions on the positive clock edge S124 GND E Ground S125 LVDSO Not used S126 LVDSO Not used 81 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name S127 LCD BKLT EN U15 Mode GPIO1 22 S128 LVDS1 S129 LVDS1 S130 GND S131 LVDS2 S132 LVDS2 S133 LCD VDD EN T15 Mode GPIO1 23 S134 LVDS Ck S135 LVDS_CK S136 GND S137 LVDS3 S138 LVDS3 S139 I2C_LCD_CK D17 Mode3 I2C2 SCL S140 I2C LCD DAT D18 Mode3 I2C2 SDA S141 LCD BKLT PWM T6 Mode TIMERS S142 LCD DUAL PCK S143 GND S144 RSVD EDP_HPD S145 WDT_TIME_OUT R7 Mode TIMER4 S146 PCIE_WAKE SMARC T335x Computer on Module User s Manual v 1 02 OD OD Not used Not used Ground Not used Not used Not used Not used Ground Not used Not used LCD display 12C bus clock LCD display 12C bus data Display backlight PWM control Not used Ground Not used Watchdog Timer Outp
17. RMII2 TXD1 The MAC transmits data to the transceiver using this signal T17 Mode3 RMIIZ CRS DV 11 CRS DV RMII2 CRS DV This signal is asserted to indicate the receive medium is non idle When a 10BASE T packet IS received CRS DV is asserted but RXD 1 0 is held low until the SFD byte 10101011 is received One fast Ethernet port is exposed to GbE port in SMARC golden finger edge connector the other one is exposed to AFB Alternative Function Block pins that has second GbE port definition in SMARC specification The pin outs of fast Ethernet 10 100Mbps are a subset of GbE that defines in SMARC spec The path from LAN8720A to the golden finger edge connector is show in the following figure 30 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc VDD LANA 1 19 GBE CTREF 21 GbE MDIO TXN 20 GbE MDIO 23 GbE MDI1 RXP RXN 22 GbE MDlI1 VDD1A VDD2A TXP GbE LINK ACT GbE_LINK100 LEDI REGOFF N IQ LED2 nINTSEL XTAL1 XTAL2 YSAONISA NAG 109 JOCA 25Mhz m gJ O m Q O EX g m Z T XTAL1 XTAL2 z VDD_LANB 1 19 4 AFB0_OUT VDD1A VDD2A 1 AFB DIFFO 20 AFB DIFFO 23 AFB DIFF1 IXE TXN RXP RXN AFB8_PTIO AFB6_PTIO LED1 REGOFF LED2 nINTSEL N Oo D Us w Figure 6 Fast Ethernet Connection from SMSC LAN8720A to golden finger edge connector oS 1 SMARC T335x Computer on Module User s Manual v 1 02 Embedian In
18. S104 S103 S102 S100 S99 S98 S97 S96 S95 S94 S93 Pin Name LCD D23 LCD D22 LCD D21 LCD D20 LCD D19 LCD D18 LCD D17 LCD D16 LCD D15 LCD D14 LCD D13 LCD D12 LCD D11 LCD D10 LCD D9 MSB LSB MSB LCD D8 LSB LCD D7 MSB LCD D6 LCD D5 LCD D4 LCD D3 LCD D2 LCD D1 LCD DO LSB SMARC T335x Computer on Module User s Manual v 1 02 Net Names Carrier Board LCD D23 LCD D22 LCD D21 LCD D20 LCD D19 LCD D18 LCD D17 LCD D16 LCD D15 LCD D14 LCD D13 LCD D12 LCD D11 LCD D10 LCD D9 LCD D8 LCD D7 LCD D6 LCD D5 LCD D4 LCD D3 LCD D2 LCD D1 LCD D Color BLUE 24 bit Color LETS R7 R6 R5 R4 R3 R2 R1 RO G7 G6 G5 G4 G3 G2 G1 GO B7 B6 B5 B4 B3 B2 B1 BO 21 Embedian Inc TI AM335x CPU SMARC T335X Edge Net Names Color 24 bit Golden Finger Color LETS Pin Name Pint Pin Name V5 ModeO LCD PCLK S123 LCD PCK LCD PCLK R6 Mode0 LCD AC BIAS S120 LCD DE LCD DE EN R5 Mode0 LCD HSYNC S122 LCD HS LCD HSYNC U5 ModeO LCD VSYNC S121 LCD_VS LCD_VSYNC To use displays which require fewer bits e g 18 or 16 bit displays simply do not connect the bottom n LSBs for each color where n is the number of signals that are not required for a specific color For instance to connect an 18 bit display RO R1 GO G1 BO and B1 will remain unused and R2 G2 and B2 become the LSBs for this configur
19. USBx ports as well as for over current indication The SMARC T335X complies with this definition These nets are provided with a 10k pull up resistors on the Module The SMARC T335X Module USB power enable and over current indication logic implementation is shown in the following block diagram There are 10K pull up resistors on the Module on the SMARC USBx EN _ OC lines Outputs driving the USBx EN OC lines are open drain The Carrier board USB power switch if present is enabled by virtue of the 10K Module pull up to 3 3V VDD_33A VDD_33A b 10K Pull Ups to 3 3V lt R130 on Module 10K m U G m G O m zZ TI A 0 m A USBO_DRVVBUS USBO_EN_OC P62 TI S E AM335 USB0_OC i USB1_DRVVBUS USB1_EN_OC lt gt USB1_OC YSAONIS NAG 109 JOTA Figure 3 External USB Port Power Distribution Logic Implementation 24 SMARC 1335x Computer on Module User s Manual v 1 02 Embedian Inc Power distribution for external USB plug in peripherals USB memory sticks cameras keyboards mice etc is typically handled by USB power switches such as the Texas Instruments TPS2052B Micrel MIC2026 1 or similar devices on the Carrier board The Enable pin on the Carrier board USB power switch must be active high and the Over Current pin OC must be open drain active low these are commonly available No pull up is required on the USB power switch Enable or OC line they are tied together on the Carrier
20. User s Manual v 1 02 lO Ground Not used Not used Ground Not used Not used Ground Not used Not used Ground Not used Not used Ground Not used Not used Not used Not used Camera O Power Enable active low output Camera 1 Power Enable active low output Camera O Reset active low output 69 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Signal Name P111 GPIO3 V16 Mode GPI0O1 24 IO Camera 1 Reset CAM1_RST active low output P112 GPIO4 U6 Mode GPIO2 4 IO HD Audio Reset HDA_RST active low output P113 GPIO5 PWM OUT T7 Mode GPIO2 3 IO PWM output P114 GPIO6 TACHIN U18 Mode GPI01 28 IO Tachometer input used with the GPIOS PWM P115 GPIO7 V6 Mode GPI01 29 IO PCAM FLD Field PCAM FLD signal input P116 GPIO8 T13 Mode GPIO2 0 IO CANO Error signal CANO ERR active low input P117 GPIO9 V12 Mode GPIO2 1 IO CANT Error signal CAN1 ERRA active low input P118 GPIO10 C14 Mode GPIO3 7 IO P119 GPIO11 B14 Mode GPIO3 8 IO P120 GND 2 P121 I2C PM CK C16 Mode0 12C0 SCL IO Power OD management 2C bus clock P122 I2C PM DAT C17 Mode0 12C0 SDA IO Power OD management 2C bus data P123 BOOT SELOH SYSBOOT and Line De multiplexer Logic Pulled up on Module Driven by OD part on Carrier 70 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Sig
21. and fed to the Module USBx EN OC pin The pull up is on the Module 25 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc USBx VBUS 5V Switched Pwr USBx EN OC Enable TPS2052B dIONIA NITIOO JOCA m 0 G m G O EE U m 2 al z G m ps Carrier Figure 4 USB Power Distribution Implementation on Carrier 2 1 9 Fast Ethernet Controller 10 100Mbps Interface Sitara AM335x CPU offers a high number of interfaces include but most of these interfaces are multiplexed and are not available simultaneously This processor can be configured as one Gigabit LAN MAC or two 10 100Mpbs LAN MAC The SMARC T335X module supports two fast Ethernet 10 100Mbps interfaces Two fast Ethernet controller interfaces are 26 SMARC 1335x Computer on Module User s Manual v 1 02 Embedian Inc accomplished by using the low power SMSC LAN8720A physical layer PHY transceiver with variable I O voltage that is compliant with the IEEE 802 3 2005 standards The LAN8 20A supports communication with an Ethernet MAC via a standard RMII interface This is diagrammed below VDD_LANA MDIO_DATA M17 MDIO CLK M48 RMII1_RXD1 L15 RMII1_RXDO M16 RMII1_REFCLK H18 RMII1_RXER J15 RXER PHYADO RMII1_TXEN J16 TXEN RMII1_TXDO K17 17 elo RMII1_TXD1 K16 TXD1 RMII1_CRS_DV H17 CRS DV MDIO MDC Aches Vo DEZ 1 19 RXDO VDD2A nINT REFCLKO easaoNiaNaGdIOD CS XTAL1 XTAL2 TI AM339x m a
22. over current situation If this signal is used a pull up is required on the Carrier 67 Embedian Inc SMARC Edge Finger P68 P69 P70 P71 P72 P73 P74 P75 P76 P77 P78 P79 P80 P81 P82 P83 P84 P85 P86 P87 P88 P89 P90 Pin Name GND USB2 USB2 USB2_EN_OC PCIE_C_PRSNT PCIE_B_PRSNT PCIE_A_PRSNT PCIE A RST PCIE_C_CKREQ PCIE_B_CKREQ PCIE_A_CKREQ GND PCIE_C_REFCK PCIE_C_REFCK GND PCIE_A_REFCK PCIE_A_REFCK GND PCIE A RX PCIE A RX GND PCIE A TX PCIE A TX Sitara AM335x CPU Ball Mode Signal Name SMARC T335x Computer on Module User s Manual v 1 02 Typ Description e Ground Not used Not used Not used Not used Not used Not used Not used Not used Not used Not used Ground Not used Not used Ground Not used Not used Not used Not used Ground Not used Not used Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name P91 GND P92 HDMI D2 P93 HDMI D2 P94 GND P95 HDMI D1 P96 HDMI D1 P97 GND P98 HDMI DO P99 HDMI DO P100 GND P101 HDMI CK P102 HDMI CK P103 GND P104 HDMI HPD P105 HDMI CTRL CK P106 HDMI CTRL DAT P107 HDMI CEC P108 GPIO J17 Mode GPIO3 4 CAM _PWR P109 GPIO1 C18 Mode GPIO 7 CAM1_PWR P110 GPIO2 U16 Mode GPIO1 25 CAM _RST SMARC T335x Computer on Module
23. side in the Module shadow This is to prevent possible problems with metallic Module heat sink attachment 54 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc hardware that may protrude through the Module lf Carrier board components are required in this region then the Carrier components must be on the Carrier Bottom side or a taller Module to Carrier connector may be used Stack heights of 2 7mm 3mm 5mm and up are available 2 3 5 MTBF The SMARC T335X System MTBF hours gt 100 000 hours The above MTBF Mean Time Between Failure values were calculated using a combination of manufacturer s test data if the data was available and a Bellcore calculation for the remaining parts The Bellcore calculation used is Method 1 Case 1 In that particular method the components are assumed to be operating at a 50 stress level in a 40 C ambient environment and the system is assumed to have not been burned in Manufacturer s data has been used wherever possible The manufacturer s data when used is specified at 50 C so in that sense the following results are slightly conservative The MTBF values shown below are for a 40 C in an office or telecommunications environment Higher temperatures and other environmental stresses extreme altitude vibration salt water exposure etc lower MTBF values 2 3 6 Module Assembly Hardware The SMARC T335X module is attached to the carrier with four M2 5 screws A 4m
24. 1 register access As the name implies PM Power Management this 12C bus is used by low level software for system power management The Module PMIC TPS65217C power regulator is attached to this bus and various voltage levels and options are continuously modified over this interface So use care if accessing this interface Note The voltage level of 2C PM on SMARC T335x is 1 8V In Embedian Carrier design the voltage level of 2C PM will pull up to 3 3V 2C PM 3V3 on Carrier Two more I2C devices are on 2C PM 3V3 bus in SmartBase T33 evaluation carrier board Please refer to SMARC T335x Carrier Board Hardware Design Guide and SMARC T335x Carrier Board User s Manuaf for details 42 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 15 CAN Bus Interface The Controller Area Network CAN is a serial communications protocol which efficiently supports distributed real time control with a high level of security The SMARC T335X module supports a CAN bus interface CAN interface signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pin Name CAN BUS J18 Model DCAN TX P143 CANO TX CANO TX CANO Transmit output K15 Model DCANO RX P144 CANO RX CANO RX CANO Receive input By SMARC hardware specification CANO bus error condition signaling should be supported on the Module GPIO8 P116 pin
25. 35x Computer on Module User s Manual v 1 02 Embedian Inc TI AM335x CPU SMSC Net Names LAN8720A Ball Mode Pin Name Pin Pin Name LAN1 H17 Model RMII1_CRS DV 11 CRS DV RMII1 CRS DV This signal is asserted to indicate the receive medium is non idle When a 10BASE T packet IS received CRS DV is asserted but RXD 1 0 is held low until the SFD byte 10101011 is received LAN2 M17 Mode0 MDIO DATA 12 MDIO MDIO DATA Serial Management Interface data input output M18 ModeO MDIO CLK 13 MDC MDIO_CLK Serial Management Interface clock T16 Mode3 RMII2_RXD1 RxXD1 RMII2 RXD1 Bit 1 of the 2 data bits that are sent by the transceiver on the receive path V17 Mode3 RMII2_RXDO 8 RXD RMII2 RXDO Bit O of the 2 data bits that are sent by the transceiver on the receive path H16 Model RMII2 REFCLK 14 nINT REFCLKO RMII2Z RXCLK Reference clock U17 Mode3 RMII2_RXER 10 RXER PHYADO RMII2 RXER This signal is asserted to indicate that an error was detected somewhere in the frame presently being transferred from the transceiver Indicates that valid R13 Mode3 RMII2_TXEN 16 TXEN RMII2_TXEN transmission data is present on TXD 1 0 29 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc TI AM335x CPU SMSC Net Names LAN8720A Mode Pin Name Pin Pin Name V15 Mode3 RMII2 TXDO 17 TXD RMII2 TXD The MAC transmits data to the transceiver using this signal R14 Mode3 RMII2 TXD1 18 TXD1
26. A NAQ 109 ADCS SMSC LAN 8710A MDI 2 pairs for Ethernet plus signal support LED etc Details for this diagram will be explained in the following chapters 12 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 1 4 Software Support Hardware Abstraction The Embedian SMARC 1335X Module is supported by Embedian BSPs Board Support Package The first SMARC T335X BSP targets Linux Ubuntu 12 04 LTS and Android support BSPs for other operating systems are planned Check with your Embedian contact for the latest BSPs This manual goes into a lot of detail on I O particulars information is provided on exactly how the various SMARC edge fingers tie into the TI SoC and to other Module hardware This is provided for reference and context Almost all of the I O particulars are covered and abstracted in the BSP and it should generally not be necessary for users to deal with I O at the register level 1 5 Document and Standard References 1 5 1 External Industry Standard Documents e eMMC Embedded Multi Media Card the eMMC electrical standard is defined by JEDEC JESD84 B45 and the mechanical standard by JESD84 C44 www jedec org e The I2C Specification Version 2 1 January 2000 Philips Semiconductor now NXP www nxp com e 12S Bus Specification Feb 1986 and Revised June 5 1996 Philips Semiconductor now NXP www nxp com e JTAG Joint Test Action Group defined by IEEE 1149 1 2001 IEEE Standar
27. AL SPECIFICATIONS raader Dee e ap 56 2 ENVIRONMENTAL SPECIFICATIONS sorore aE EEEE N 59 CHAE TEI SCONE CG LOR FI OG Toini E ON 61 3 1 SMARC T335X CONNECTOR PIN MAPPING e reereeerenananananererereaaeaaananarenea 61 CHAPTER 4 HANDSHAKING BETWEEN SMARC T335X MODULE AND CARRIER ccc 56 AF SMARCG 15594 MODULE POWER ico a a 56 ho MIVA fo a Ra aa RR RR UR RO RAROS E ERRADO RR E 90 eI DEDE ga 93 6 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Using this Manual This guide provides information about the Embedian SMARC formerly ULP COM T335X for Tl AM335x embedded SMARC core module family Conventions used in this guide This table describes the typographic conventions used in this guide This Convention Is used for Italic type Emphasis new terms variables and document titles monospaced type Filenames pathnames and code examples Embedian Information Document Updates Please always check the product specific section on the Embedian support website at www embedian com for the most current revision of this document Contact Information For more information about your Embedian products or for customer service and technical support contact Embedian directly To contact Embedian by Mail Embedian Inc 4F 7 432 Keelung Rd Sec 1 Taipei 11051 Taiwan World Wide Web http www embedian com Telephone 886 2 2 22 3291 Additional Resources Please also refer to the most recent Tl
28. AM335x processor reference manual SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc and related documentation for additional information SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter Introduction This Chapter gives background information on the SMARC T335X Section include Features and Functionality Module Variant Block diagram Software Support Hardware Abstraction Module Variant Document and Standard References SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter 1 Introduction The SMARC Smart Mobility ARChitecture formerly ULP COM Ultra Low Power Computer on Module T335x is a versatile small form factor Computer On Module that requires low power and provides high performance at low cost The module connector has 314 edge fingers that mate with a low profile 314 pin 0 5mm pitch right angle connector this connector is sometimes identified as an 321 pin connector but 7 pins are lost to the key Featuring Tl s AM335x System on Chip Embedian s SMARC T335X offers Parallel LCD two 10 100Mbps Ethernet SDHC USB 2 0 USB OTG three UARTs support and many peripheral interfaces in a cost effective low power miniature package Embedian s SMARC T335X thin and robust design makes it an ideal building block for reliable system design The module is the ideal choice for a broad range of target markets including e HVAC Building and
29. ARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 2 SMARC T335X Debug 2 2 1 Serial Port Debug SMARC module has 3 serial output ports SERO SER1 and SER3 Out of these 3 serial ports SER3 is set as the serial debug port use for Sitara AM335x SER3 is exposed along with all other serial ports available on the module in the SMARC T335X Evaluation Carrier The default baud rate setting is 115 200 8N1 SER3 pin out of the SMARC T335X is shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger mode Pin Name Pin Pin Name SER1 Debugging Port Model UART3 TXD P140 SER3 TX SER3 TX Asynchronous serial port data out Model UART3_RXD P141 SER3 RX SER3 RX Asynchronous serial port data in 2 3 Mechanical Specifications 2 3 1 Module Dimensions The SMARC T335X complies with SMARC Hardware Specification in an 82mm x 50 mm form factor 2 3 2 Height on Top 2 9mm maximum without PCB complied with SMARC specification defines as 3mm as the maximum 2 3 3 Height on Bottom 0 9mm maximum without PCB complied with SMARC specification defines as 1 3mm as the maximum 50 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 3 4 Mechanical Drawings The mechanical information is shown in Figure 9 SMARC T335X Mechanical Drawings Top View and Figure 10 SMARC T335X Mechanical Drawings Bottom View 4X 2 7mm 6mm PAD M2 5x4mmSCREW wi ODORS 0Q 0 15 aC RTC CNS 0000 U
30. An On Semiconductor 24C32 or equivalent EEPROM is used in the module The device operates at 1 8V The Module serial EEPROM is placed at I2C slave addresses A2 A1 AO set to O I2C slave address 50 hex 7 bit address format or AO A1 hex 8 bit format for I2C EEPROMs address bits A6 Ad A4 A3 are set to binary 0101 convention The module serial EEPROM is intended to retain module parameter information including serial number The module serial EEPROM data structure conforms to the PICMG EEEP Embedded EEPROM Specification 48 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc Note The EEPROM ID memory layout is now follow the mainline and as follows Name Size Bytes Contents MSB OxEE3355AA LSB Name for Board in ASCII SMARCT33 Embedian SMARC T335X Computer on Module Hardware version code for version in ASCII OOAO rev AO 12 Serial number of the board This is a 12 character string which is MSCEWWYYnnnn Where WW 2 digit week of the year of production YY 2 digit year of production nnnn incrementing board number Serial Number Configuration Option Codes to show the configuration setup on this board For the available T335X supported the following codes are used ASCII SMARCT33 default configuration Remaining 24 bytes are reserved Available Available space for other non volatile codes data After OOAO version the EEPROM will be write protected 49 SM
31. C GP CK 2 2K pull up to VDD IO USBx EN OC 10K pull up to 3 3V x Is 0 1 or 2 Switched 3 3V USB _OTG_ID 10K pull up to 3 3V VDD_IO_SEL 100k pull up to VIN VIN_PWR_BAD 100k pull up to VIN TXP pin 21 49 90hm 1 0 pull up of LAN8720A resistor to VDDA created from 3 3V through a ferrite bead TXN pin 22 49 90hm 1 0 pull up of LAN8720A resistor to VDDA 90 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Signal Name RXP pin 23 of LAN872 A RXN pin 22 of LAN 87204 LED1 REGOFF pin 3 LED2 nINTSEL pin 2 ALL other Module inputs Series Termination Parallel Termination 49 90hm 1 0 pull up resistor to VDDA 49 9ohm 1 0 pull up resistor to VDDA 10kohm 1 0 pull down resistor to ground 10kohm 1 0 pull down resistor to ground Weak 47K termination to inactive state SMARC T335x Computer on Module User s Manual v 1 02 91 Embedian Inc 4 2 2 Carrier Off Module Terminations The following Carrier terminations are required if the relevant interface is used If unused the SMARC Module pins may be left un connected Module Signal Carrier Series Carrier Parallel Group Name Termination Termination GBE_MDI Magnetics module Secondary side center tap appropriate for terminations appropriate 10 100 1000 GBE for Gigabit Ethernet transceivers implementations GBE_LINK GBE status LED sinks If used current limiting
32. C T335X General Functions 2 1 1 SMARC T335X Feature Set This section lists the complete feature set supported by the SMARC T335X module SMARC Feature SMARC SMARC T335X SMARC T335X Specification Specification Feature Support Feature Support Maximum Number Instances Possible LVDS Display Support 1 No transmitter on 0 carrier Parallel LCD Support 1 Yes 1 18 24 bits HDMI Display Support 1 No 0 CSI Camera Support 2 No 0 Dual and Quad lanes Parallel Camera Support 2 No 0 USB Interface 3 Yes 2 PCle Interface 3 No 0 SATA Interface 1 No 0 GbE Interface 1 10 100Mbps 1 SDIO Interface 1 Yes 1 SDMMC Interface 1 No 4GB eMMC on 0 module SPI Interface 2 Yes 2 I2S Interface 3 Yes 1 12C Interface 5 Yes 3 Serial 4 Yes 3 CAN 2 Yes 1 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Feature SMARC SMARC T335X SMARC T335X Specification Specification Feature Support Feature Support Maximum Number Instances Possible AFB Yes 2 LAN and resistive touch I O Voltage 1 8V Level No Support I O Voltage 3 3V Level Yes Support 2 1 2 Form Factor The SMARC T335X module complies with the SMARC General Specification module size requirements in an 82mm x 50mm form factor 2 1 3 CPU The SMARC T335X implements Tl s AM335x ARM processor e Up to 1GHz ARM Cortex A8 Microprocessor e 1 Cache 32 KB Instruction cache I Cache and 32 KB Data cache D Cache with Single Error Detection parity
33. Chip Select 1 output A17 Mode0 SPIO SCLK P44 SPIO CK SPIO SCLK SPIO Master Clock output B16 Mode0 SPI D1 P45 SPIO DIN SPI MISO SPIO Master Data input input to CPU output from SPI device B17 Mode0 SPI DO P46 SDIO DO SPIO MOSI SPIO Master Data output output from CPU input to SPI T C12 Mode3 SPI1_CS P54 SPI1 CS0 SPI1_CSO SPI1 Master Chip Select O output A15 Mode4 SPI1_CS1 P55 SPI1_CS1 SPI1_CS1 SPI1 Master Chip Select 1 output A13 Mode3 SPI1_SCLK P56 SPI1_CK SPI1_SCLK SPI1 Master Clock output D12 Mode3 SPI1 D1 P57 SPI1 DIN SPI1_MISO SPI1 Master Data input input to CPU output from SPI device B13 Mode3 SPI1 DO P58 SDIO DO SPI1 MOSI SPI1 Master Data output output from CPU input to SPI device 37 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 12 12S Interface The SMARC T335X module supports one I2S interface I2S is originated from Sitara AM335x McASP interface I2S interface signals are exposed on the SMARC T335X golden finger edge connector as shown below TI AM335x CPU SMARC T335X Net Names Edge Golden Finger Mode Pin Name Pint Pin Name D14 Mode0 XDMA EVENT I S38 Audio MCK AUD_MCLK Master clock output NTR1 to Audio codecs C13 Mode3 MCASP1 FSX S39 I2S0 LRCK MCASP1 FSX Left amp Right audio synchronization clock D13 Mode3 MCASP1 AXRO S40 I2S SDOUT MCASP1 AXRO Digital audio Output A14 Mode3 MCASP1 AXR1 S41 I2S SDIN MCASP1 AXR1 Digital audio Input
34. E SMSC LAN8720A Differential Transmit Receive Positive Channel 0 77 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name S63 AFB DIFFO AIO GBE1 MDIO Bi directional transmit receive pair O to magnetics Media Dependent Interface for AFB 2nd GBE SMSC LAN8720A Differential Transmit Receive Negative Channel 0 S64 GND S65 AFB_DIFF1 IO GBE1_MDI1 Bi directional transmit receive pair 1 to magnetics Media Dependent Interface for AFB 2nd GBE SMSC LAN8720A Differential Transmit Receive Positive Channel 1 S66 AFB_DIFF1 GBE1_MDI1 Bi directional transmit receive pair 1 to magnetics Media Dependent Interface for AFB 2nd GBE SMSC LAN8720A Differential Transmit Receive Negative Channel 1 S67 GND P Ground S68 AFB_DIFF2 GBE1 MDI2 Not used 78 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name S69 AFB DIFF2 GBE1_MDI2 Not used S70 GND P Ground S71 AFB DIFF3 GBE1 MDI3 Not used S72 AFB DIFF3 GBE1_MDI3 Not used S73 GND P Ground S74 AFB DIFF4 Not used S75 AFB_DIFF4 Not used S76 PCIE B_RST Not used S77 PCIE C RST amp Not used S78 PCIE C RX Not used S79 PCIE C RX Not used S80 GND P Ground S81 PCIE_C_TX Not used S82 PCIE_C_TX Not used S83 GND P Ground S84 PC
35. Embedian Inc SMARC Computer on Module TI Sitara AM335x Cortex A8 Parallel LCD 18 24 bits 3 x COM Ports 1 x SDHC 1 x USB Host 2 0 1 x USB OTG 2 x 10 100Mbps Ethernet CAN Bus 2 x SPIs 3 x I2C SMARC T335x errbeceay SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc mm HH TY Hil WII im a ii ia il i bs NOE ER ae re FEED o SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Revision History Revision Date Changes from Previous Revision 1 0 2013 4 16 Initial Release 1 01 2013 90 06 1 Correct Boot Configuration 2 Correct Debugging Port from SER1 to SER3 3 Add module EEPROM Format Information 1 Correct the ric s39390a i2c address from 0x34 to 0x30 1 02 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc USER INFORMATION About This Manual This document provides information about products from EMBEDIAN INC No warranty of suitability purpose or fitness is implied While every attempt has been made to ensure that the information in this document is accurate the information contained within is supplied as is and is subject to change without notice For the circuits descriptions and tables indicated EMBEDIAN assumes no responsibility as far as patents or other rights of third parties are concerned Copyright Notice Copyright O 2013 EMBEDIAN INC All rights reserved No part of this manual may be reproduced transmitted
36. IE B REFCK Not used S85 PCIE_B_REFCK Not used S86 GND P Ground S87 PCIE B RX Not used S88 PCIE B RX Not used S89 GND P Ground S90 PCIE B TX Not used 19 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Signal Name S91 PCIE B TX Not used S92 GND E Ground S93 LCD DO U10 Model LCD DATA23 O S94 LCD D1 U12 Model LCD DATA20 O S95 LCD_D2 V13 Mode0 LCD DATA17 O 8 bit BLU color data 18 bit display S96 LCD D3 U4 Mode0 LCD DATA11 O implementations leave the two LS S97 LCD D4 V2 ModeO LCD_DATA12 O bits DO D1 not connected S98 LCD D5 V3 Mode0 LCD DATA13 O S99 LCD D6 V4 Mode0 LCD DATA14 O S100 LCD D7 T5 Mode0 LCD DATA1S O S101 GND P Ground S102 LCD_D8 T10 Mode1 LCD DATA22 O S103 LCD D9 T12 Mode1 LCD DATA19 O S104 LCD D1 T2 Mode0 LCD DATAS O S105 LCD D11 T3 Mode0 LCD DATA6 O S106 LCD D12 T4 Mode0 LCD DATA7 O S107 LCD D13 U1 Mode0 LCD DATAS O S108 LCD D14 U2 Mode0 LCD_DATA9 O S109 LCD D15 U3 ModeO LCD _DATA1 O S110 GND P Ground 80 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Type Description Pin Name Signal Name LCD D16 LCD DATA21 S112 LCD D17 R12 Model LCD DATA18 O S113 LCD D18 U13 Model LCD DATA16 O S114 LCD D19 R1 Mode0 LCD DATAO O S115 LCD D20 R2 Mode0 LCD DATA 1 O S116 LCD D21 R3 Mode0 LCD DATA2 O S117 LCD D22 R4 Mode0 LCD DATA3
37. MARC T335X Top side components P1 JTAG DDR3 DQ 0 15 i2cRTC CN3 000000000 0000 0000 gt 900 U6 HOLE4 SPI FLASH f gt EEPROM AM335x CPU eMMC FLASH e errbedem Ethernet PHY SMARC T335x Rev 1 0 EDGE FINGER PRIMARY SIDE a det dt dt tt tt dt tt dt P P74 PID P156 Figure 11 SMARC T335X Top Side Components Bottom side major component IC and Connector information is shown in Figure 12 SMARC T335X Bottom side components 53 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc U15 00000 00000 DDR3 TERMINATION REGULATOR LINE DECODER HEX SCHMITT INVERTER EDGE FINGER SECONDARY SIDE S158 S76 S75 S1 Figure 12 SMARC T335X Bottom Side Components SMARC T335x height information from Carrier board Top side to tallest Module component is shown in Figure 13 SMARC T335x Minimum zZ Height 1 5mm Min Figure 13 SMARC T335x Minimum Z Height The SMARC connector board to board stack heights that are available may result in the use of non standard spacer lengths The board to board stack heights available include 1 5mm 2 7mm and 5mm Of these three only the spacer for the 5mm stack would likely be a standard length When a 1 5mm stack height Carrier board connector is used there shall not be components on the Carrier board Top side in the Module region Additionally when 1 5mm stack height connectors are used there should not be PCB traces on the Carrier top
38. MC_CMD SDMMC_RST AUDIO_MCK I2S _LRCK I2S _SDOUT 1259 SDIN 1250 CK 1251 LRCK 1251 SDOUT 1251 SDIN 1251 CK GND I2C GP CK I2C GP DAT 1252 LRCK 1252 SDOUT 1252 SDIN 1252 CK SATA ACT amp Sitara AM335x CPU D14 C13 D13 A14 B12 D15 D16 Mode0 Mode3 Mode3 Mode3 Mode3 Mode3 Mode3 Signal Name XDMA EVENT 1 NTR1 MCASP1_FSX MCASP1 AXRO MCASP1 AXR1 MCASP1_ACLKX I2C1 SCL I2C1 SDA SMARC T335x Computer on Module User s Manual v 1 02 Description Not used Not used Not used Master clock output to Audio codecs Left amp Right audio synchronization clock Digital audio Output Digital audio Input Digital audio clock Not used Not used Not used Not used Ground General purpose I2C bus clock General purpose I2C bus data Not used Not used Not used Not used Not used 76 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name 555 AFB8_PTIO O OD SMSC LAN8720A and OD driver GBE1_LINK_ACT Link Activity Indication LED for AFB 2nd GBE Driven low on Link 10 100 or 1000 mbps Blinks on Activity S56 AFB9_PTIO Not used S57 PCAM_ON_CSI0 Not used S58 PCAM ON CSI1 Not used S59 SPDIF_OUT Not used S60 SPDIF_IN Not used S617 GND P Ground S62 AFB DIFFO AIO GBE1 MDIO Bi directional transmit receive pair O to magnetics Media Dependent Interface for AFB 2nd GB
39. OUT Watchdog Timer Output 46 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 19 JTAG Figure 8 shows the SMARC T335x JTAG connectors location and pin out P10 P3 P2 P1 P1 HOLE3 JTAG DDR3 DQ 0 15 t rte CN3 0000000000 0000 0000 ooo ooo ooo ooo o qm V6 HOLE4 SPIFLASH EEPROM AM335x CPU eMMC FLASH e errbedea E q Ethernet PHY SMARC HOLE1 T335x Rev 1 0 EDGE FINGER PRIMARY SIDE P P74 PS P156 Figure 8 JTAG Connector Location and Pinout JTAG functions for CPU debug and test are implemented on separate small form factor connector CN3 JST SM10B SRSS TB 1mm pitch R A SMD Header The JTAG pins are used to allow test equipment and circuit emulators to have access to the Module CPU The pin outs shown below are used 47 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc TI AM335x CPU CN3 Connector JST SM10B SRSS TB 1mm pitch R A SMD Header Ball Mode Pin Name Pint Pin Name 1 VDD 33A Power JTAG I O Voltage sourced by Module B10 nTRST 2 nTRST JE JTAG Reset active Low C11 TMS 3 TMS I JTAG mode select A11 TDO 4 TDO O JTAG data out B11 TDI 5 TDI I JTAG data in A12 TCK 6 TCK I JTAG clock 7 RTCK I JTAG return clock 8 GND Ground Ground 9 MFG_Mode I Pulled low to allow in circuit SPI ROM update 10 GND Ground Ground 2 1 20 Boot ID EEPROM The SMARC T335x module includes an I2C serial EEPROM available on the I2C_PM bus
40. P7 CSI1 DO PCAM D2 P8 CSI1 DO PCAM D3 P9 GND P10 CSI1 D1 PCAM D4 P11 CSI1 D1 PCAM_D5 P12 GND P13 CSI1 D PCAM D6 P14 CSI1 D2 PCAM D7 P15 GND P16 CSI1 D3 PCAM D8 P17 CSI1 D3 PCAM D9 P18 GND P19 GbE_MDI3 SMARC T335x Computer on Module User s Manual v 1 02 Type Description Not used Ground Not used Not used Not used Not used Not used Not used Ground Not used Not used Ground Not used Not used Ground Not used Not used Ground Not used 63 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name P20 GbE MDI3 P21 GbE LINK100 P22 GbE LINK1000 P23 GbE MDI2 P24 GbE MDI2 P25 GbE LINK_ACT P26 GbE MDI1 P27 GbE MDI1 P28 GbE1_CTREF P29 GbE MDI P30 GbE MDIO SMARC T335x Computer on Module User s Manual v 1 02 OD OD AIO AIO AIO AIO Not used SMSC LAN8720A and OD driver Not used Not used Not used SMSC LAN8720A and OD driver SMSC LAN8720A Differential Transmit Receive Negative Channel 1 SMSC LAN8720A Differential Transmit Receive Positive Channel 1 SMSC LAN8720A Center tap reference voltage for GBE Carrier board Ethernet magnetic SMSC LAN8720A Differential Transmit Receive Negative Channel 0 SMSC LAN8720A Differential Transmit Receive Positive Channel O 64 Embedian Inc SMARC Edge Finger
41. Pin Name Sitara AM335x CPU Description P31 SPIO _CS1 P32 GND P33 SDIO WP P34 SDIO CMD P35 SDIO CD amp P36 SDIO CK P37 SDIO PWR EN P38 GND P39 SDIO DO P40 SDIO D1 P41 SDIO D2 P42 SDIO D3 P43 SPIO CSO P44 SPI CK P45 SPI _DIN P46 SPI DO C15 V14 G18 U14 G17 T14 G16 G15 F18 F17 A16 A17 B16 B17 Mode0 Mode0 Mode0 Mode7 Mode0 Mode7 Mode0 Mode0 Mode0 Mode0 Mode0 Mode0 Mode0 Mode0 Signal Name SPI CS1 GPIO1 17 MMC _CMD GPIO1 18 MMC CLK GPIO1 19 MMC _DAT MMC _DAT1 MMC _DAT2 MMC _DAT3 SPI CSO SPIO SCLK SPI D1 SPI DO SMARC T335x Computer on Module User s Manual v 1 02 IO IO IO IO SPIO Master Chip Select 1 output Ground Write Protect Command Line Card Detect Clock SD card power enable Ground Data path Data path Data path Data path SPIO Master Chip Select O output reserved for on module NOR flash SPIO Master Clock output SPIO Master Data input input to CPU output from SPI device SPIO Master Data output output from CPU input to SPI device 65 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name P47 GND P Ground P48 SATA TX Not used P49 SATA TX Not used P50 GND P Ground on SATA_RX Not used P52 SATA_RX Not used P53 GND P Ground P54 SPI1_CSO C12 Mode3 SPI1_CS O SPI1 Ma
42. RC T335X does not have a standby power rail Standby operation is powered through the main supply voltage rail as defined in the SMARC specification 2 4 4 Module I O Voltage The SMARC T335X module supports 3 3V level I O voltage only as defined by SMARC Hardware specification Module pin 8158 VDD IO SELF is tied high through a resistance of 100K on the Module per the SMARC specification indicating a 3 3V I O voltage level The SmartBase T33 evaluation carrier also supports 3 3V I O SMARC module only 56 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 4 5 Power Consumption Power consumption is highly dependent on the individual user s application however this section focuses on typical SMARC T335X application usage case scenarios and the environment settings that were used to perform such power measurements Power figures are given in the table below for the Module power consumption These are Module power figures Off Module power consumption e g display backlight display power Carrier board devices is not included here What is included in these power figures everything on the Module the TI Sitara SoC the DDR3 DRAM the eMMC memory the Module power supplies the fast LAN PHY and miscellaneous Module circuits The figures below given below are subject to change 57 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Software Linux No application running after boot Use
43. RTC Real Time Clock and I2C RTC slave device The Tl AM335x CPU is provided with a 24 MHz clock using a crystal in normal oscillation mode On chip Oscillator The SMSC LAN8720A PHY is provided with a 25 Mhz clock using a crystal in normal oscillation mode 2 1 7 Parallel LCD Interface The Tl AM335x parallel 24 bit LCD interface is brought to the Module edge connector The interface runs at the 3 3V Module I O voltage This voltage swing may be used directly with 3 3V capable Carrier Board LVDS transmitters such as the TI SN75LVDS83B The 3 3V signaling is suitable for direct connection to a parallel flat panel in most cases Generally speaking larger parallel LCD panels are likely to use 3 3V or 5V signaling If LCD panels use 5V signaling a set of voltage translators buffers would be needed on the Carrier 19 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc RED LCD DATA 4 0 16 18 21 GREEN LCD DATA 10 5 19 22 YSAONISA NITIOO JOCA BLUE LCD DATA 15 11 17 20 23 LCD AC BIAS EN Wy _tco_vsync n W copor om R6 Figure 2 SMARC T335X Block Diagram The mapping of the TI AM335x parallel LCD pins to the SMARC edge connector is shown in the table below Note that the TI Sitara AM335x pin names and the SMARC pin names have different assumptions about color mappings which can make things confusing Basically TI Sitara AM335x processor maps the 18 bits or R G B for 6 bit color depth to
44. S HOLE4 SPI FLASH EEPROM o oo o 000090 oo 0990000009000 HOH mente Ont 00000000000600606 DO SO SO OCO SOS OS 000 00000000000000006 PPG PPEIESEDESEOb4 00000 0000000000000000 09000000000 000000090 000000000000 09990999999999090 2000 200 9000000000000000 AM335x CPU eMMC FLASH d errbeoean 12 0mm TYP EE u10 50 0mm 7 7mm Ethernet PHY SMARC 6 2mm T335x Rev 1 0 EDGE FINGER PRIMARY SIDE 3 3mm 3 1mm P P74 P75 P156 4 0mm TYP 1 25mmP1 82 0mm r FULL RAD TA PRIMARY SIDE o Em e 81x0 50 E 156X 0 35 7 F 1 2040 10 0 4 WV 45 1 00 x a 3 10 TYP 1 25 ha CHAMFER EDGE DETAIL A a SECONDARY SIDE j 1 25 DETAIL A PIN ALIGNMENT DETAIL PRIMARY SIDE Figure 9 SMARC T335X Mechanical Drawings Top View 51 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc LINE DECODER HEX SCHMITT INVERTER EDGE FINGER SECONDARY SIDE F N Z NES S158 S76 S75 4 0mmCTYP gt 82 0mm ou 158x 0 35 RN 3 10TPY 82x 0 50 ab al 74x 0 50 DETAIL B SECONDARY SIDE 00000 DOORS TERMINATION REGULATOR 50 0mm D 12 0mm TYP S1 6 20 2X R0 50 4 170 DETAIL D NOTCH 2 PLACES Figure 10 SMARC T335X Mechanical Drawings Bottom View SMARC T335x Computer on Module User s Manual v 1 02 52 Embedian Inc Top side major component IC and Connector information is shown in Figure 11 S
45. al port data out Asynchronous serial port data in Request to Send handshake line for SERO Clear to Send handshake line for SERO Ground Asynchronous serial port data out Asynchronous serial port data in Not used Not used Not used Not used 72 Embedian Inc SMARC Edge Finger Pin Name Sitara AM335x CPU Type Description P140 SER3 TX P141 SER3_RX P142 GND P143 CANO TX P144 CAN RX P145 CAN1 TX P146 CAN1 RX P147 VDD IN P148 VDD IN P149 VDD IN P150 VDD IN P151 VDD IN P152 VDD IN P153 VDD IN P154 VDD IN P155 VDD IN P156 VDD IN L16 L17 J18 K15 Mode1 Mode1 Mode1 Mode1 Signal Name UART3 TXD UART3_RXD DCAN _TX DCAN1_RX SMARC T335x Computer on Module User s Manual v 1 02 Asynchronous serial port data out Asynchronous serial port data in Ground CANO Transmit output CANO Receive input Not used Not used Power in Power in Power in Power in Power in Power in Power in Power in Power in Power in 73 Embedian Inc SMARC Edge Finger Pin Name S1 PCAM_VSYNC S2 PCAM_HSYNC S3 GND S4 PCAM_PXL_CK S5 I2C CAM CK S6 CAM_MCK S7 I2C_CAM_DAT S8 CSI _CK PCAM D10 S9 CSI _CK PCAM D11 S10 GND S11 CSI DO PCAM D12 S12 CSIO D PCAM D13 S13 GND S14 CSIO D1 PCAM_D14 S15 CSI _D1 PCAM_D15 S16 GND S17 AFB OUT Sitara AM335x CPU Ball Mode Signal Name SMARC T335x Computer o
46. ation 22 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 8 USB Interface The Embedian SMARC T335X module supports two USB ports USB 0 1 Per the SMARC specification the module supports a USB On The Go OTG port capable of functioning either as a client or host device on the SMARC USBO port The SMARC T335X module also supports one additional USB2 0 host ports on SMARC USB1 USB interface signals are exposed on the SMARC T335X edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pint Pin Name USBO Port OTG N17 ModeO USB DP P60 USBO USBO USBO port data pair N18 Mode0 USB DM P61 USBO USBO F16 Mode0 USB DRVVBUS P62 USBO EN OC amp USB EN OC amp USB Porto power enable over current indication signal P15 Mode0 USB VBUS P63 USBO VBUS DET 5V tolerant USB host power detection when this port is used as a device P16 Mode0 USB ID P64 USBO OTG ID USB ID USB OTG ID input active high R18 Mdde0 USB1 DP P65 USB1 USB1_DP USB1 port data pair R17 ModeO USB1 DM P66 USB1 USB1 DM F15 Mode0 USB1IDRVVBUS P67 USB1 EN OC USB1 EN_OC USB Porto power enable over current indication signal 23 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc The SMARC Hardware specification defines USBx EN OC where x is O or 1 for use with USBO or USB1 pins as multifunction pins to use for power enable of
47. body of Carrier board circuits should not be powered until the Module asserts the CARRIER PWR ON signal as a high Module hardware will assert CARRIER PWR ON when all Module supplies necessary for Module booting are up 4 1 5 VDD IO The default I O voltage for SMARC T335x module is 3 3V only SMARC specification defines the I O voltage to be 1 8V or 3 3V or both Due to SMARC T335x supports only 3 3V I O it pull the VDD IO SELF pin to the Module VDD IN rail through a resistance of 100K as defined in SMARC specification If the Carrier supports only 1 8V I O then the Carrier will tie the VDD IO SEL pin directly to GND If the Carrier supports only 3 3V like the case here Carriers will float the signal for 3 3V SMARC T335x will not power up if T335x senses a 1 8V VDD JO Carrier on the VDD IO SEL due to the Carrier pulling the line down and the Module supports only 3 3V I O 87 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 4 1 6 Power Bad Indication VIN PWR BAD Power bad indication is from carrier board and is an input signal for Module Module and Carrier power supplies other than Module and Carrier power supervisory circuits will not be enabled while this signal is held low by the Carrier This signal has a 100K pull up on module and is driven by OD part on Carrier 4 1 7 System Power Domains It is useful to describe an SMARC system as being divided into a hierarchy of three power domains
48. c SMSC LAN8720A Pin Name 21 TXP 20 TXN 1 19 VDD1A VDD2A 23 RXP 22 RXN 3 LED1 REGOFF 2 LED2 nINTSEL SMARC T335x Computer on Module User s Manual v 1 02 Golden Finger Edge Pin P30 P29 P28 P27 P26 P25 P21 Connector Pin Name GbE MDIO GbE MDI GbE CTREF GbE MDI1 GbE MDI1 GbE LINK ACTH GbE LINK100 Net Names GBE_MDI GBE MDI GBE CTREF GBE MDI1 GBE MDI1 GBE LINK ACTit GBE LINK100 Differential Transmit Receive Positive Channel 0 Differential Transmit Receive Negative Channel 0 Center tap reference voltage Differential Transmit Receive Positive Channel 1 Differential Transmit Receive Negative Channel 1 Link Activity Indication LED Driven low on Link 10 100 or 1000 mbps Blinks on Activity Could be able to sink 24mA or more Carrier LED current Link Speed Indication LED for 100Mbps Could be able to sink 24mA or more Carrier LED current 32 Embedian Inc SMSC Golden Finger Edge Net Names LAN8720A Connector Pin Name Pink Pin Name 21 TXP S62 AFB DIFFO GBE1 MDIO Differential Transmit Receive Positive Channel O 20 TXN S63 AFB DIFFO GBE1 MDIO Differential Transmit Receive Negative Channel 0 1 19 VDD1A VDD2A S17 AFBO OUT GBE1 CTREF Center tap reference voltage 23 RXP S65 AFB DIFF1 GBE1 MDI1 Differential Transmit Receive Positive Channel 1 22 RXN S66 AFB_DIFF1 GBE1
49. d Test Access Port and Boundary Scan Architecture www ieee org e MXM3 Graphics Module Mobile PCI Express Module Electromechanical Specification Version 3 0 Revision 1 1 2009 NVIDIA Corporation www mxm sig org e PICMG EEEP Embedded EEPROM Specification Rev 1 0 August 2010 www picmg org e SD Specifications Part 1 Physical Layer Simplified Specification Version 3 01 May 18 2010 2010 SD Group and SD Card Association Secure Digital www sdcard org e SPI Bus Serial Peripheral Interface de facto serial interface standard defined by Motorola A good description may be found on Wikipedia http en wikipedia org wiki Serial Peripheral Interface Bus e USB Specifications www usb org 13 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 1 5 2 SGET Documents e SMARC Hardware Specification V1p0 version 1 0 December 20 2012 1 5 3 Embedian Documents The following documents are listed for reference The Module schematic is not usually available outside of Embedian without special permission The other schematics may be available under NDA or otherwise Contact your Embedian representative for more information The SMARC T335x Evaluation Carrier Board Schematic is particularly useful as an example of the implementation of various interfaces on a Carrier board e SMARC T335x Evaluation Carrier Board Schematic PDF and OrCAD format e SMARC T335x Evaluation Carrier Board Use
50. e 256KB of L2 Cache with Error Correcting Emulation and Debug Code ECC e 176KB of On Chip Boot ROM e 64KB of Dedicated RAM e SGX530 graphic engine e Programmable Real Time Unit and Industrial Dedicated Input Pin EXT WAKEUP for Communication Subsystem PRU ICSS Supports protocols such as EtherCAT PROFIBUS PROFINET EtherNet IP and more e 15mm x 15mm ZCZ package size e Optional industrial temperature rage 40 C 85 C Note SGX530 graphics support for AM3354 and AM3358 processor pin to pin 18 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 4 Module Memory The SMARC T335X module supports 512MB DDR3 memory Other variations would include alternative eMMC options including possibly no on Module eMMC Check with your Embedian contact or on the Embedian web site for updated information 2 1 5 Onboard Storage The SMARC T335X module supports a 4GB eMMC flash memory device 4MB SPI NOR flash and a 32Kb I2C serial EEPROM on the Module 12C PM 12C0 bus The device used is an On Semiconductor 24C32 equivalent The Module serial EEPROM is intended to retain Module parameter information including a module serial number The Module serial EEPROM data structure conforms to the PICMG EEEP Embedded EEPROM Specification The onboard 4MB SPI NOR flash that can be used as SPI boot media or for users to store secure data 2 1 6 Clocks A 32 768 KHz clock is required for the TM335x CPU
51. has two chip selects that can connect two SPI slave devices on each channel Every device will share the SPL DIN SPI DO and SPI_CK pins but each device will have its own chip select pin The chip select signal is a low active signal The 4MB onboard SPI NOR flash uses the SP O_CS0O signal If a slave device would like to connect to SPIO bus use SP O_CS71 instead The onboard SPI NOR flash could be used as boot media or for users to store secure data in case that the file system on eMMC is crashed and the secure data could be restored The schematic of SPI NOR flash is diagramed below VDD 33A VDD 33A VDD 33A VDD 33A O E 8 C160 0 1U 16V R185 R184 R186 10K 10K VDD_33A 10K E o o EA i A SPIO MISO lt lt SO SIO1 HOLD WP SCLK H lt SPIO_SCLK 4 R187 R188 GND SI SIOO lt sPlo Mos 44 NL 1K NL 1K MX25L3206EM2I 12G Figure 7 SPI Serial Flash Schematics Note Use SPIO_CS1 chip select signal or SPI1 channel instead if users would like to have SPI slave devices on T335x carrier SPI interface signals are exposed on the SMARC golden finger edge connector as shown below 36 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pint Pin Name SPIO Port A16 Mode0 SPI _CS P43 SPIO CSO SPIO Master Chip Select O output reserve for onboard NOR flash C15 Mode0 SPI CS1 P31 SPIO CS1 SPIO CS1 SPIO Master
52. m length screw is usually used The attachment holes are located on the corners of the module Attachment holes have a 6mm diameter pad 2 7 mm dia drill hole as shown Figure 8 SMARC T335X Mechanical Drawings Top View 2 3 7 Module Cooling Solution Sitara AM335x is a low heat dissipation processor The module implementations on TI devices benefit from the low power architecture of Ts Sitara ARM MPU platform which eliminates the need for a fan or heat sink In most use cases the peak power of AM335x ARM MPUs is under 1W 55 SMARC 1T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 4 Electrical Specifications 2 4 1 Supply Voltage The SMARC T335X module operates over an input voltage range of 3 35V to 5 25V Power is provided from the carrier through 10 power pins as defined by the SMARC specification Caution The SMARC specification states that the input voltage range should extend down to 3 0V The SMARC T335X lower limit is determined by a non volatile register setting in the TI PMIC used and is set 3 35V by default A single 5V DC input is recommended 2 4 2 RTC Backup Voltage 3 0V RTC backup power is provided through the VDD RTC pin from the carrier board This connection provides back up power to the module PMIC The RTC is powered via the primary system 3 3V supply during normal operation and via the VBAT power input if it is present during power off 2 4 3 No Separate Standby Voltage The SMA
53. n E17 ModeO UARTO RTSN P131 SERO RTS SERO RTSH Request to Send handshake line for SERO E18 Mode0 UART _CTSN P132 SERO CTS SERO CTSH Clear to Send handshake line for SERO SER1 Port L18 Model UART2_TXD P134 SER1 TX SER1 TX Asynchronous serial port data out K18 Model UART2_RXD P135 SER1 RX SER1 RX Asynchronous serial port data in SERS Port Debugging Port L16 Model UART3 TXD P140 SER3 TX SER3 TX Asynchronous serial port data out L17 Model UART3 RXD P141 SER3 RX SER3 RX Asynchronous serial port data in 39 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 14 12C Interface There is a minimum configuration of 12C ports up to a maximum of 5 ports defined in the SMARC specification PM Power Management LCD Liquid Crystal Display GP General Purpose CAM Camera and HDMI SMARC T335x does not have camera and HDMI interface It is therefore the module defines only three I2C buses PM LCD and GP and supports multiple masters and slaves in fast mode 400 KHz operation This will be summarized below 12C Port Primary Purpose Alternative Use I O Voltage Level Golden AM335x Finger CPU Connector Power System I2C_PM I2C0 Management configuration support management I2C GP 12C1 General purpose use LCD display I2C LCD 1202 support General Purpose for parallel and LVDS LCD Note The 2 2k pull up resistors for 2C SCL and 2C_SDA signals are on module 40 SMARC T335x C
54. n Module User s Manual v 1 02 Description Not used Not used Ground Not used Not used Not used Not used Not used Not used Ground Not used Not used Ground Not used Not used Ground SMSC LAN8720A Center tap reference voltage for GBE1 Carrier board Ethernet magnetic 74 Embedian Inc SMARC Edge Finger Sitara AM335x CPU S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 Pin Name Ball Mode Signal Name AFB1_OUT B6 AINO AFB2 OUT B7 AIN2 AFB3_IN AFB4_IN C7 AIN1 AFB5_IN A7 AIN3 AFB6_PTIO AFB7_PTIO GND SDMMC DO SDMMC_D1 SDMMC_D2 SDMMC_D3 SDMMC_D4 SDMMC_D5 SDMMC_D6 SDMMC_D7 GND SMARC T335x Computer on Module User s Manual v 1 02 Typ Description e Al Al Al Al OD XP Plus X axis on off control signal YP Plus Y axis on off control signal Not used XM Minus X axis on off control signal YM Minus Y axis on off control signal SMSC LAN8720A and OD driver GBE 1 LINK100 Link Speed Indication LED for 100Mbps for AFB 2nd GBE GBE 1 LINK1000 Not used Ground Not used Not used Not used Not used Not used Not used Not used Not used Not used 15 Embedian Inc SMARC Edge Finger S35 S36 S37 S38 S39 S40 S41 S42 S43 S44 S45 S46 S47 S48 S49 S50 S51 S52 S53 S54 Pin Name SDMMC CK SDM
55. nal Name P124 BOOT SEL1 SYSBOOT and Line De multiplexer Logic Pulled up on Module Driven by OD part on Carrier P125 BOOT SEL2 SYSBOOT and Line De multiplexer Logic Pulled up on Module Driven by OD part on Carrier P126 RESET OUT amp O PMIC TPS65217C and Reset Logic General purpose reset output to Carrier board P127 RESET IN PMIC TPS65217C through Level Translator Reset input from Carrier board Carrier drives low to force a Module reset floats the line otherwise Pulled up on Module Driven by OD part on Carrier 71 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger P128 P129 P130 P131 P132 P133 P134 P135 P136 P137 P138 P139 Pin Name POWER BTN amp SER TX SERO RX SERO RTSE SERO_CTS GND SER1_TX SER1 RX SER2 TX SER2 RX SER2_RTS SER2_CTS Sitara AM335x CPU Ball E16 E15 E17 E18 L18 K18 Mode Mode0 Mode0 Mode0 Mode0 Modet Modet Signal Name UARTO TXD UARTO RXD UARTO RTSN UARTO CTSN UART2 TXD UART2_RXD SMARC T335x Computer on Module User s Manual v 1 02 Description PMIC TPS65217C Power button input from carrier board Carrier to float the line in in active state Active low level sensitive It is de bounced on the Module Pulled up on Module Driven by OD part on Carrier Asynchronous seri
56. omputer on Module User s Manual v 1 02 Embedian Inc The 12C interface signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Ball Mode Pin Name Pin Name C16 Mode0 I2C SCL P121 I2C PM CK I2C PM CK Power management I2C bus clock C17 ModeO 12C SDA P122 I2C PM DAT I2C PM SDA Power management I2C bus data GP ZE D15 ModeS 12C1 SCL S48 I2C GP CK I2C GP CK General purpose 12C bus clock D16 ModeS 12C1 SDA S49 I2C GP DAT I2C GP DAT General purpose 12C bus data LCD 12C D17 Mode3 12C2 SCL S139 I2C LCD CK I2C LCD CK LCD display 12C bus clock D18 Mode3 I12C2_SDA S140 I2C LCD DAT I2C LCD DAT LCD display 12C bus data SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc All three 12C busses originate in the multi master capable I2C controllers within the Sitara AM335x SoC There are three I2C devices on the SMARC T335X Module are all on the 2C PM 2CO bus and are operated at 1 8V Those devices and their address details are listed in the following table Address Device Description Address 8 bit 7 bit Read Write 12C PM Bus 1 TI TPS65217C PMIC 0x24 0x49 0x48 General purpose usage address On EEPROM 0x50 0xA1 xA General purpose Semiconductor parameter CAT64C32 EEPROM Serial number etc in PICMG EEEP format Seiko S 35390A Real time clock IC 0x30 0x61 x6 General purpose parameter with INT
57. r s Manual e SMARC T335x Carrier Board Hardware Design Guide e SMARC T335x Carrier Board Hardware Layout Guide e SMARC T335x User s Manual e SMARC T335X Schematic Checklist 1 5 4 TI Documents e AM335x ARM Cortex A8 Microprocessors MPUs April 15 2013 rev F AM335x Schematic Checklist Oct 31 2011 e AM335x ARM Cortex A8 Microprocessors MPUs Technical References Manual April 15 2013 rev H e AM335x Power Consumption Summary Oct 31 2011 1 5 5 TI Development Tools e Pin Mux Utility for ARME Microprocessors e Power Estimation Tool PET 1 5 6 TI Software Documents e LINUXEZSDK AM335x e ANDROIDDEVKIT JB AM335x 14 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 1 5 7 Embedian Software Documents e Embedian Linux BSP for SMARC T335X Module e Embedian Android BSP for SMARC T335X Module e Embedian Linux BSP User s Guide e Embedian Android BSP User s Guide 1 5 8 TI Design Network e Beaglebone e Adeneo Embedded Windows Embedded Compact 7 e Nucleus e QNX SMARC T335x Computer on Module User s Manual v 1 02 15 Embedian Inc Chapter Specifications This Chapter provides SMARC T335X specifications Section include e SMARC T335X General Functions SMARC T335X Debug Mechanical Specifications Electrical Specification Environment Specification 16 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Chapter 2 Specifications 2 1 SMAR
58. rt two MMC controllers One is used for internal eMMC support and the other is used for external SDHC SDIO interface The SMARC T335X module supports a 4bit SDIO interface per the SMARC specification The SDIO interface uses 3 3V Signaling per the SMARC spec and for compatibility with commonly available SDIO cards SDIO interface signals are exposed on the SMARC golden finger edge connector as shown below TI AM335x CPU SMARC T335X Edge Net Names Golden Finger Mode Pin Name Pint Pin Name G16 ModeO MMC DATO P39 SDIO DO SDIO DO SDIO Data O G15 Mode0 MMC DAT1 P40 SDIO D1 SDIO D1 SDIO Data 1 F18 Mode0 MMC DAT2 P41 SDIO D2 SDIO D2 SDIO Data 2 F17 Mode0 MMC DAT3 P42 SDIO D3 SDIO D3 SDIO Data 3 V14 Mode7 GPI01 17 P33 SDIO WP MMC _SDIO_WP SDIO write protect signal G18 Mode0 MMC CMD P34 SDIO CMD SDIO_ CMD SDIO Command signal U14 Mode GPI0O1 18 P35 SDIO CD SDIO_CD SDIO card detect G17 Mode0 MMC CLK P36 SDIO CK SDIO_CK SDIO Clock Signal T14 Mode7 GPIO1 19 P37 SDIO PWR EN SDIO PWREN SD card power enable The SDIO card power should be switched on the Carrier board and the SDIO lines should be ESD protected The SMARC Evaluation Carrier schematic is useful as an implementation reference 35 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 2 1 11 SPI Interface The SMARC T335X module supports two AM335x SPI interfaces that are available off Module for general purpose use Each SPI channel
59. ster Chip Select O output P55 SPI1_CS1 A15 Mode4 SPI1_CS1 O SPI1 Master Chip Select 1 output P56 SPI1_CK A13 Mode3 SPI1_SCLK O SPI1 Master Clock output BST SPI1 DIN D12 Mode3 SPI1 D1 I SPI1 Master Data input input to CPU output from SPI device P58 SPI1 DO B13 Mode3 SPI1 D O SPI1 Master Data output output from CPU input to SPI device P59 GND P Ground P60 USBO N17 Mode0 USB DP lO Differential USBO data P61 USBO N18 Mode0 USB DM IO Differential USBO data 66 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc SMARC Edge Finger P62 P63 P64 P65 P66 P67 Pin Name USB _EN_OC USB _VBUS_DET USB _OTG_ID USB1 USB1 USB1 EN OC Sitara AM335x CPU F16 P15 P16 R18 R17 F15 Mode0 Mode0 Mode0 Mdde0 Mode0 Mode0 Signal Name USB DRVVBUS USB VBUS USB ID USB1 DP USB1 DM USBIDRVVBUS SMARC 1T335x Computer on Module User s Manual v 1 02 lO OD lO lO lO OD Description Pulled low by Module OD driver to disable USBO power Pulled low by Carrier OD driver to indicate over current situation If this signal is used a pull up is required on the Carrier USB host power detection when this port is used as a device USB OTG ID input active high Differential USBO data pair Pulled low by Module OD driver to disable USBO power Pulled low by Carrier OD driver to indicate
60. t Linux Ubuntu 12 04 Android ICS Windows Embedded Compact 7 e Power Consumption 1 5 Watts Typical e Thermal 4 Normal Temperature 0 C 60 C Industrial Temperature 40 85 C e Power Supply e 3V to 5 25V single 5V is recommended in non battery operation e 3 3V module IO support 0909090990 A 1 2 Module Variant The SMARC T335X module is available with various options based on processors in this family from Texas Instruments For example if people would like to use Sitara AM3354 from Texas Instruments you can order SMARC T3354 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 1 3 Block Diagram The following diagram illustrates the system organization of the SMARC T335X Arrows indicate direction of control and not necessarily signal flow Figure 1 SMARC T335X Block Diagram TPS65217C Power In 3V 5 25V various power Power for module Supplies 314 Pin 0 5mm pitch edge finger pattern for use with MXM3 style carrier board connector aka the SMARC Carrier Connector Actual pin order on the connector will differ from what is implied here 12 bit GPIO CAN bus 24 bit RGB LCD REPERE 109 JOCA UARTs 1x4 Wire and 2x2 Wire TI SDIO 4 bit DIDI DDR D15 DO AM3352 I2S 1 instance 256M x16 12C 3 instances one dedicated to PM USB OTG USB Host 2 0 SMSC LAN 8710A MDI 2 pairs for Ethernet plus signal support LED etc YSAONIS
61. up to 10W may be brought in at 3 35V T335x typically consumes 1 5W and is pretty safe in using the connector 4 1 2 No Separate Standby Voltage There is no separate voltage rail for standby power other than the very low current RTC voltage rail SMARC T335x operating and standby power comes from the single set of VDD_IN pins This suits battery power sources well and is also easy to use with non battery sources 86 SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc 4 1 3 RTC Backup Voltage RTC backup power is brought in on the VDD RIC rail The RTC consumption is typically 15 microA or less The allowable VDD RTC voltage range shall be 2 0V to 3 25V The VDD RTC rail is sourced from a Carrier based Lithium cell or it may be left open if the RTC backup functions are not required SMARC T335x module is able to boot without a VDD RTC voltage source Lithium cells if used on Carrier shall be protected against charging by a Carrier Schottky diode The diode is placed in series with the positive battery terminal The diode anode is on the battery side and the cathode on the Module VDD RTC side Note that if a Super cap is used current may flow out of the Module VDD RTC rail to charge the Super Cap 4 1 4 Power Sequencing The Module signal CARRIER PWR ON exists to ensure that the Module is powered before the main body of Carrier circuits those outside the power and power control path on the Carrier The main
62. ut Not used 82 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Type Description Pin Name Ball Mode Signal Name S147 VDD RTC S148 LID S149 SLEEP S150 VIN PWR BAD amp S151 CHARGING 5152 CHARGER_PRSNT S153 CARRIER STBYF SMARC T335x Computer on Module User s Manual v 1 02 Low current RTC circuit backup power 3 0V nominal It is sourced from a Carrier based Lithium cell or Super Cap Reserved Reserved PMIC TPS65217C Power bad indication from Carrier board Module and Carrier power Supplies other than Module and Carrier power supervisory circuits will not be enabled while this signal is held low by the Carrier Pulled up on Module Driven by OD part on Carrier Reserved Reserved Reserved 83 Embedian Inc SMARC Edge Finger Sitara AM335x CPU Description Pin Name Ball Mode Signal Name S154 CARRIER PWR ON O PMIC TPS65217C Carrier board circuits apart from power management and power path circuits will not be powered up until the Module asserts the CARRIER PWR ON signal S155 FORCE RECOV amp Not used S156 BATLOW Reserved S157 TEST Not used S158 VDD IO SEL IO Tied to high to indicate 3 3V I O on module Note Due to the insufficient IO pin number of Sitara AM335x the reserved pins are multiplexed with RMII2 related pins and default will be configured as RMII2 84 SMARC T335x Computer on Module User s Manual v 1 02
63. v 1 02 Embedian Inc EMBEDIAN will not be responsible for any defects or damages to other products not supplied by EMBEDIAN that are caused by a faulty EMBEDIAN product Technical Support Technicians and engineers from EMBEDIAN and or its subsidiaries and official distributors are available for technical support We are committed to making our product easy to use and will help you use our producis in your systems Before contacting EMBEDIAN technical support please consult our Web site for the latest product documentation utilities and drivers If the information does not help solve the problem contact us by e mail or telephone SMARC T335x Computer on Module User s Manual v 1 02 Embedian Inc Table of Contents COR TC ceini iane a a Ra Er een lan 10 Ted FERATORES AND FUNCTIONALLY asian Anis EET ERE NEN ere 10 Le MODO LE TARIAN usang gui ia ai ad da II BSD B G RED BAG AN e OE US a I2 1 4 SOFTWARE SUPPORT HARDWARE ABSTRACTION G Gussssssneeeeeeenernneeese renen nn reen ne reeesn rer rrennnee 13 1 5 DOCUMENT AND STANDARD REFERENCES ccccccccccceceeeeccceceeeeeeeeeeeecaeeeeeeeeeneeenneeeeeeeeeetnees 13 CO ERS E OLE TON a E essen sesaientioatunadamoonesene cane E 17 ZA OMARG 9924 GENERAL PONCHONS quatro iE Aiii ash apita ad 17 Za OLA 355 MADE B CHE aea E NE EA TEE EET SEE 50 2 3 MECHANICAL SPECIFICATIONS cccsssscccccccssssssnsncccecsssssssnnnaneeecccssnesennanaaeceescssesnenaaaacesesesseneeenaes 50 24 ELECIRIG

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