Texas Instruments TUSB2136 User's Manual
Contents
1. bED DescrIptlon esie nee RRIS DERI Jumpers and Test Points QWERTY Keyboard Matrix EVM Bill of Materials for Edge Number 6436539 EVM Bill of Materials for Edge Number 6436540 Contents vii viii Chapter 1 Introduction This user s guide describes the setup and operation of the USB keyboard hub evaluation module EVM Information and instruction presented throughout this document assumes user familiarity with universal serial bus USB protocol and the use of common lab testing equipment Additional information about this EVM can be found at www ti com sc usb kbdkit Topic Page 1 1 Required Hardware and Software 1 2 Required Hardware and Software 1 4 Required Hardware and Software The USB keyboard hub EVM is designed for use with a personal computer running a USB enabled operating system The PC with BIOS chipsets and operating system should be USB 1 1 or 2 0 specification compliant If the BIOS is not compliant the system may not boot when USB devices are connected at power up and the EVM may not function Additionally one or more low or full speed USB devices are needed to plug into the downstream ports of the USB keyboard hub EVM to exercise the hub ports A standard USB cable is needed to connect the USB keyboard hub EVM to a downstream port of the PC or a USB hub ti2. 4 1 Table 4 1 EVM Bill of Materials for Edge Number 6436539 Continued 1 Resistor chip 30 1 10 W 5 R19 R22 R26 Resistor chip 1 kO 1 10 W 5 Resistor chip 20 1 10 W 5 Resistor chip 30 1 1 10 W 1 ESO R29 R36 R37 Resistor chip 0 1 10 W 5 R38 wm 1 SW1 Switch 6 POS SPST low profile CTS Corp CTS Corp SMT 0 5 inch centers TP14 Test point black 1 mm Fame 240333 20 TP1 TP2 TP7 Test point red 1 mm Farnell 240 345 TP13 TP15 TP25 3 3 V LDO and dual switch DGN8 TPS2149 U3 IC dual EIA 232 driver receiver SO16 MAX232ID 1 U4 IC 2 port USB hub w Funcontr 64 TI TUSB2136PM pin S PQFP G64 Pkg 1 x1 Crystal 12 MHz 20 pF 50 PPM Crytek 16695 25 C Socket spine Table 4 2 EVM Bill of Materials For fdge Number 6436540 18 R39 R45 Resistor chip 511 O 1 10 W 5 R0805 Std Std R48 R49 R50 R57 R58 R61 R66 4 2 Chapter 5 EVM Layout This chapter contains the EVM layout and schematics for edge number 6436539 and 6436540 5 1
3. TPS2149 low dropout regulator is used to generate the required 3 3 V supply from the USB 5 V supply The power indicator LED D1 turns on whenever power is available to the EVM see Table 3 1 3 4 Light Emitting Diodes LEDs Severalonboard LEDs are provided on the EVM for quick and easy evaluation A set of six green LEDs D2 D7 connected to P3 0 through P3 5 of the TUSB2136 may be used for general purposes in any code that is written for the TUSB2136 see Table 3 1 By default the factory code provides the EVM with the use of only three of the LEDs as keyboard status indicators for Scroll Lock D2 Caps Lock D3 and Num Lock D4 The other three are not used Table 3 1 LED Description LED D2 D7 D1 3 2 Description Green LED ON indicates corresponding GPIO pin is low when D1 is ON Green LED OFF indicates corresponding GPIO pin is high when D1 is ON Red LED ON indicates that the EVM is powered on and not suspended Red LED OFF indicates that the EVM is powered off or suspended Jumpers and Test Points 3 5 Jumpers and Test Points Table 3 2 describes the jumpers J1 and J2 used to connect P3 0 and P3 1 to D6 and D7 respectively which should only be done when P3 0 S0 and P3 1 S1 are not set to GND for VID PID selection see the TUSB2136 keyboard hub controller data sheet literature number SLLS442 SW1 3 and SW1 4 Table 3 2 also describes the various 0 Q resistors used as jumpers Test po
4. small package The LDO is used to provide power to the TUSB2136 The USB specification requires that downstream ports remain off until enumeration is complete Together the TUSB2136 and the TPS2149 ensure the hub meets this requirement Two other connectors J3 and J4 allow easy connection to the TUSB2136 general purpose I O lines These lines are used to implement the keyboard function The miniature QWERTY keyboard plugs directly into J3 and J4 to implementa fully functional keyboard Jumpers test points and LEDs have been added for testing troubleshooting and debugging purposes There are test points on the differential pair lines of the upstream B type connector and the two downstream A type connectors The 12C port can be probed directly on the EEPROM Six LEDs are provided for quick feedback during firmware debugging or as status information One LED D1 is fixed to provide power and suspend status of the TUSB2136 device An RS 232 port is available for monitoring 8052 MCU activity The port uses a one to one cable and not a null modem cable 2 1 2 2 Chapter 3 EVM Operation Operation of the USB keyboard hub EVM is summarized in this chapter Topic Page aerate a taala ajal a a ne iere t 3 2 3 2 Interfaces and USB Ports 0 3 2 3 3 Power Supplies 2 te nies sees epee e aa ep e Pe 3 2 3 4 Light Emitting Diodes LEDs 3 2 3 5 Jumpers a
5. Wi TEXAS INSTRUMENTS USB Keyboard Hub EVM Featuring the TUSB2136 and the TPS2149 User s Guide December 2001 Mixed Signal Products SCAU003 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries Tl reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgment TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed Tl assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using TI components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards does not warrant or represent that any license either express or implied is granted under any TI pat
6. e damage to the EVM If there are questions concerning the input range please contact a TI field representative prior to connecting the input power Applying loads outside of the specified output range may result in unintended operation and or possible permanent damage to the EVM Please consult the EVM User s Guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is designed to operate properly with certain components above 60 C as long as the input and output ranges are maintained These components include but are not limited tolinear regulators switching transistors pass transistors and current sense resistors These types of devices can be identified using the EVM schematic located in the EVM User s Guide When placing measurement probes near these devices during operation please be aware that these devices may be very warm to the touch Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2001 Texas Instruments Incorporated Preface Read This First How to Use This Manual This document contains the following chapters Chapter 1 Introduction Chapter 2 Hardware Overview Chapter 3 EVM Operation Chapter 4 Bill of Materials D D D O Chapter 5 EVM Layout Re
7. ent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in which TI products or services are used Information published by TI regarding third party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice Tl is not responsible or liable for such altered documentation Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice TI is not responsible or liable for any such statements Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2001 Texas Instruments Incorporated EVM IMPORTANT NOTICE Texas Instruments TI provides the enclosed product s under the fo
8. er Figure 1 1 USB Keyboard Hub EVM Hardware USB EVM O OO O Chapter 2 Hardware Overview The USB keyboard hub EVM features the TUSB2136 and the TPS2149 made by Texas Instruments The EVM is a two board set made up of a stand alone two port hub edge 6436539 and a miniature QWERTY keyboard edge 6436540 Jumpers 0 O resistors and jumper blocks provided on the EVM are installed with the factory settings The settings are described in Table 3 2 Review all setting changes prior to powering the EVM Improper settings could result in damage to some of the EVM components The factory settings allow the EVM to operate using a 12 MHz crystal along with an 12C EEPROM The EVM has also been configured to work only in bus powered mode The firmware installed at the factory and stored in the EEPROM allows the EVM to function as a two port keyboard hub Users are responsible for developing their own application firmware for the target hardware device The EVM uses a TUSB2136 USB keyboard hub controller made by Texas Instruments to communicate with the host and the downstream devices A USB cable is needed to connect the root hub of the PC to the EVM type B connector J5 The downstream devices connect to the EVM via the J6 and J7 connectors These downstream devices are powered through the TPS2149 a power management device that integrates an LDO and two power switches into one
9. ints are located throughout the EVM For location of these test points see the EVM Layout section of this user s guide Table 3 2 Jumpers and Test Points Jumpers J1 J2 Connects P3 0 to D6 J9 Description Connects P3 1 to D7 Connects the serial data line of the EEPROM to the TUSB2136 Installed at factory J10 J11 J12 Connects power to the RS232 interface chip Connects the transmit and receive lines on the RS232 interface chip to the TUSB2136 A set of six switches used to configure the TUSB2136 For proper operation with the SW1 R29 R36 R37 R38 firmware and EVM SW1 3 SW1 5 and SW1 6 should be set to on 0 Q resistors on power lines which may be removed to insert a current meter 3 6 EEPROM The EEPROM is used for application specific firmware The TUSB2136 automatically reads the EEPROM at power up via the 12C bus A header must be added to the application firmware before loading into the EEPROM This header format is specified in the bootcode document literature number SLLU025 which can be found on the EVM web page at www ti com sc usb kbdkit The header may be generated automatically with the 12 header generation utility software also found on the EVM website For convenience the EEPROM has been installed on a socket If desired the Socket may be removed and the EEPROM can be soldered directly onto the board The firmware installed at the factory supports the miniature QWERTY keyboard with the mat
10. lated Documentation From Texas Instruments FCC Warning TPS2149 3 3 V LDO and Dual Switch data sheet literature number SLVS401 TUSB2136 USB Keyboard Hub Controller data sheet literature number SLLS442 This equipment is intended for use in a laboratory test environment only It gen erates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules which are designed to provide reasonable protection against radio frequency interference Operation of this equipment in other en vironments may cause interference with radio communications in which case the user at his own expense will be required to take whatever measures may be required to correct this interference vi 1 1 Introduction 2255 piisata 1 1 Required Hardware and Software Hardware Overview EVM Operation Setups rang ts Rigid A S 3 2 Interfaces and USB Ports 3 3 34 Light Emitting Diodes LEDs 35 Jumpers and Test Points 36 EEPROM es ee ese Rb nens tah hace PS Bill of 5 nr n m mmm EVM Layout io a a y EN EE USB Keyboard Hub EVM Hardware
11. llowing conditions This evaluation kit being sold by Tl is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use As such the goods being provided may not be complete in terms of required design marketing and or manufacturing related protective considerations including product safety measures typically found in the end product incorporating the goods As a prototype this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may not meet the technical requirements of the directive Should this evaluation kit not meet the specifications indicated in the EVM User s Guide the kit may be returned within 30 days from the date of delivery for a full refund THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED IMPLIED OR STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods Further the user indemnifies TI from all claims arising from the handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s responsibility to take any and all appropriate precautions with regard t
12. nd Test Points 3 3 3 67 EEPROM e aie aa ale a reete te mer ete eiie 3 3 3 1 Setup 3 4 Setup The USB keyboard hub EVM is designed to allow evaluation of the TUSB2136 and the TPS2149 device Test points and 0 Q resistors are provided to simplify the evaluation process see section 3 5 The EVM comes in a default configuration that requires no additional components other than the required hardware and software identified in Section 1 1 of this user s guide For a complete description of the TUSB2136 and the TPS2149 devices consult the TUSB2136 and the TPS2149 data sheets literature numbers SLLS442 and SLVS401 respectively 3 2 Interfaces and USB Ports The EVM uses a standard Type B connector for the upstream port and two single Type A connectors for the downstream ports Powerto the downstream ports is provided from the upstream USB 5 V source through the TPS2149 Two edge connectors J3 and J4 connect to the TUSB2136 general purpose I O lines Out of 32 general purpose I O lines 26 are brought out to the J3 and J4 connectors The remaining 6 I O lines are used onboard to control the LEDs see Light Emitting Diodes LEDs in this chapter 3 3 Power Supplies The USB keyboard hub EVM requires no external power supply for operation The EVM receives power via the upstream USB cable The USB 5 V source is limited by the USB specification to 500 mA max The
13. o electrostatic discharge EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES Tl currently deals with a variety of customers for products and therefore our arrangement with the user is not exclusive TI assumes no liability for applications assistance customer product design software performance or infringement of patents or services described herein Please read the EVM User s Guide and specifically the EVM Warnings and Restrictions notice in the EVM User s Guide prior to handling the product This notice contains important safety information about temperatures and voltages For further safety concerns please contact the TI application engineer Persons handling the product must have electronics training and observe good laboratory practice standards No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine process or combination in which such TI products or services might be or are used Mailing Address Texas Instruments Post Office Box 655303 Dallas Texas 75265 Copyright 2001 Texas Instruments Incorporated EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the specified input and output ranges described in the EVM User s Guide Exceeding the specified input range may cause unexpected operation and or irreversibl
14. rix shown in Table 3 3 The miniature QWERTY keyboard connects to J3 and J4 EVM Operation 3 3 EEPROM Table 3 3 QWERTY Keyboard Matrix P3 6 P0 6 COL 1 COL2 1 2 6 7 3 4 EVM Operation Chapter 4 Bill of Materials This chapter contains the EVM bill of materials for edge number 6436539 and edge number 6436540 Table 4 1 EVM Bill of Materials for Edge Number 6436539 av mines Jessin ee osin 2 C1 C2 Capacitor ceramic 33 pF 16 V 805 MuRata GRM39C0G330J100V temp 5 3 C3 C4 C25 Capacitor tantalum 4 7 uF 10 V 3528 Panasonic 293D475X0010B2T zz MQ 20 C5 C11 C14 Capacitor ceramic 0 1 uF 50 V 805 Kemet C0805C104K5RAC7800 C17 C20 X7R 10 4 C7 Capacitor ceramic 22 pF 50 V 5 805 Murata GRM39C0G220J50V 2 C15 C16 Capacitor POSCAP 100 uF 16 V 7343 D NEMCO LSR10016DK125 4 C21 C24 Capacitor ceramic 1 uF 50 V X7R 805 Murata GRM40X7R105K16PT 10 D1 Diode LED red 2 1 V 14 2 mcd 805 Liteon LTST C170UKT 20 mA D2 D7 Diode LED green 2 1 V 14 2 mcd 805 Liteon LTST C170FKT 20 mA FB1 FB4 SMB20 surface ferrite mount bead Allied Com SMB20 ponents J1 J2 J9 J12 Header 2 pin 100mil spacing EX PTC36SAAN 2 J3 JA Header 2 x 7 RT ANG pin 100mil ENS Samtec SSW 107 02 T D RA 1 Connector USB upstream Type B Molex AU Y1007 2 J6 J7 Connector USB downstream Type E AU Y 1005 A R1 R8 805 Std Std
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