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MC68SC302ADS Application Development System User`s Manual
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1. 7 2 3 1 Selecting ISA 7 2 9 2 Selecting PCMCIA seo er xa Ped apte et 7 2 3 3 selecting the 96302 clock En rege 7 2 3 4 ISDN Transceiver and Line Interface 6 8 2 3 5 U interface in master mode NT mode IDL SCP MCU mode 8 2 3 6 Seral EEPHONM ote NDD ER scone 8 2 3 6 1 ISA Serial EEPROM installatlOr e oo Coo t ana QU ee 8 2 3 6 2 PCMCIA Serial EEPROM Installation o ra tta raa terri 8 2 3 7 Installing the board in the 10 2 3 7 1 lend ipsc C EE 10 2 3 7 1 1 Tips on accessing the card in a Windows 95 PNP system 10 2 3 7 2 PCMCIA bus installation inttr rr orcinec deca ernannt been ts 11 Section 3 Design information 3 1 MC145572 U Transceiver c cccscsssscccccccccceeceeeeeeeeeeeeeeeeesesssesesennnaaaaaees 12 3 1 1 Selecting between S T and U interface 12 3 1 2 Selecting GCI vs IDL on the 4 72 12 3 1 3 Using GCI timing with SCP control on the MC145572 13 3 1 4 Selecting between NT and LT mode on the MC145572 13 3 1 5 GCI mode clock rate se
2. oO ex L D 88 a N 4n gua D Z N remi g O emi ce om gt I c o o x a o c gl i rae LH ee a R El z rs m B m de 3 2 E 9 z 3 8 6 8 5 MOTOROLA M68SC302ADS REFERENCE MANUAL 2 9 For More Information On This Product Go to www freescale com Configuration and installaidnreescale Semiconductor Inc 2 3 7 Installing the board in the system 2 3 7 1 ISA BUS 1 2 3 Insure that the PC is turned off Plug the ISA card into a free ISA slot Figure 2 2 Turn on the PC 2 3 7 1 1 Tips on accessing the card in a Windows 95 PNP system 1 2 10 When Windows 95 starts up it will detect the card and display a dialog box saying that it has detected new hardware If you do not have a driver to load with the ADS card you can pick the option to load one of the devices already shipped with Windows95 as a placeholder Note We have had success at selecting the Motorola Bitsurfer in our versions of Windows95 This device does not seem to load any device driver like VCOMM that conflicts with our ability to directly address the assigned or memory
3. D10 C4 lon p2 5012 C5 a Bd i D 16 Uis Stig SM 7 os GND 3 GND P13 i MOTOROLA INC proect M68SC302ADS nev PILOT sheet 4 or 7 8 BG HAIM AMIR BLOCK CHK 10 14 96 oescRP ISA and PCMCIA CON BUS 4 27 Go to www freescale com M68SC302ADS REFERENCE MANUAL For More Information On This Product MOTOROLA Schematics Freescale Semiconductor Inc 4 4 SHEET 4 Sheet 4 shows the ISA and the PCMCIA bus connectors The SC302 IOCHRD signal is muxed with IRQ5 4 28 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Schematics Freescale Semiconductor Inc Figure 4 5 SHEET 5 LOGIC ANALYSER EXPANSION CONNECTERS AND EPROMS B E D n F G H I J K TDR 1 CLKQUT 1 s ak H Co D 3 t ds cK PI THRE APE TWO SOCKETS FOR 1
4. RN1 7 U14 17 DS2 13 P1 D7 RN3 5 U8 4 DS2 14 P1 D8 RN3 4 U8 3 DS2 15 P1 D9 U8 1 DS2 16 P1 D10 U8 2 J10 2 P1 A20 P2 59 P7 19 U13 74 P1 A19 P2 63 P7 18 P13 D02 U13 65 P1 C18 P4 11 P8 3 P12 B14 RN1 11 U13 77 P1 B17 P4 12 P6 3 P12 B13 R39 1 U13 78 DS1 9 P1 A18 P2 16 P4 5 U13 64 J10 1 P12 B23 DS1 14 P1 A23 P4 6 U13 71 DS1 10 P1 A24 P4 7 U13 72 DS1 11 P1 A25 P4 8 U13 73 M68SC302ADS REFERENCE MANUAL For More Information On This Product Go to www freescale com MOTOROLA IRQ12 IRQ15 ISARUN L1CLK L1GRNT L1RQ L1RXD LISYNC L1TXD LA17 LA18 LA19 LA20 LA21 LA22 LA23 MEMCS16 MEMR MEMW PA3 PA4 PCMCIARN PURST REFOUT REF RESET MOTOROLA Freescale Semiconductor Inc Support Information DS1 12 P1 A26 P4 9 U13 67 DS1 13 P1 A27 P4 10 U13 75 P1 B31 P5 6 R18 2 RN2 3 U13 28 P1 C22 P3 7 R27 1 U8 14 U13 42 U14 12 DS3 4 P1 C19 P3 9 RN2 11 U13 41 DS3 5 P1 C24 P3 10 RN2 5 U13 40 P1 C20 P3 5 R24 2 R28 1 U8 13 U13 43 U14 14 P1 C23 P3 8 R21 1 U8 10 U13 45 U14 11 P1 C21 P3 6 R22 1 R23 2 U8 12 U13 44 U14 13 P1 C14 P2 46 P7 10 P13 C08 U13 83 P1 B14 P2 47 P7 9 P13 C07 U13 82 P1 A14 P2 48 P7 8 P13 C06 RN3 9 U13 81 P1 C15 P2 49 P7 7 P13 C05 RN3 13 U13 26 P1 A15 P2 50 P7 6 P13 C04 RN3 12 U13 25 P1 C16 P2 53 P7 5 P13 C03 RN3 11 U13 24 P1 B16 P2 54 P7 4 P13 C02 RN3
5. SAL 5 12 fis CLK S SERIAL EEPROM ONLY gt ONE L1RXD 5 L EEPROM CAN BE USE S IMULTANEOUS LY SA13 6 14 6 SA12 TS L1TXD 6 3 7 5 X95080 CAN BE REPLACE SAU 5 275 L1CLK zi i2 12 5 BY THE S 1950200 1 n 5 n u Al aed LISYNC 8 TINUSE 9 jt 2 X75 080 SA10 9 11 5 5 EE ue 8 LIGANT 5 8 sf SAB up amp x CLKLO9 4 uP amp tik p 8 SCPRXD m amp cn 6 o 1E so SAT 129 CLKtS36 12 CS T z SCPTXD 12 To 3 x SA6 13 d US BUFXTAL 13 P 7 vec E SCPCLK 13 z 6 2 Hj 5 SA5 E E uy S2EYDATA uP d Ut 2 SAL i55 SN PAR i gt H PEFOUT 55 SN 5 mL wi Tu TK x RN SHE ES SA1 20 slo 17 2 SOSFAX is 20 SCPTXD 3 aT 1 ND f UPO 18 20 1 GNo SCPCLK 2 SAO 19 o EPROMEN gp ON By EPROMEN of SUD PB v ND 9l loo PS co 7 SEL PEMA PPS guf LA23 n 3 RU P227 s 5 ak GNO j LAZI CMM 3 LA20 T5 19 8 1 LAB 9 LAIT ni vec aro SA16 up GND 23 S8HE i275 ot aly spi lo 500 nlo AEN 3 9 2 5 504 2 6 503 DEB REF NE ECHO n e S02 5 16 S07 83 15 516 m e BALE 5p BI DS TB u 15 S05 S010 09 515 A t 4 RESET i p UMS TR 5 SD8 5 6 SD12 5 5 BTS 4 MSIE fs To SD11 5 S014 amp 5515 x 5 usg 1a 2 GCLINL s e S013 BT 15 SAZ AT TS TOCHROY SN GCI_INZ w To SAO amp e SA amp eo SA3 i p GND GCL OUTI 5 To S 6 SAL amp 5 SAT 2 m GCI OUT 9 545 co
6. and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part Motorola and M are registered trademarks of Motorola Inc Motorola Inc is an Equal Opportunity Affirmative Action Employer 1996 Motorola Inc All Rights Reserved For More Information On This Product Go to www freescale com Freescale Semiconductor Inc MC68SC302 REFERENCE MANUAL For More Information On This Product Go to www freescale com MOTOROLA Freescale Semiconductor Inc TABLE OF CONTENTS Paragraph Title Page Number Number Section 1 Introduction 1 1 FEATURES casetas n crc ovo Darexe Lana asa ome dn pea Puer 3 1 2 GENERALE DESGRIP TION IUE ERA aT Re EX FERRE 3 1 3 RELATED DOCUMENTATION asiivaaiicatnkictanvii ain eatin 6 1 4 ABBREVIATIONS USED IN THE 6 1 5 REQUIRED EQUIPMENT ics cccsscisttaadstctortenussacterteind e bebe re apa roa haac Deren 6 Section 2 Configuration and installation 2 1 INTRODUCTION heiii ca 7 2 2 UNPACKING INSTRUC TIONS uer rc ades koe hr r xu Ex exp Rm e prre 7 2 3 Set Dip switches and
7. 10 U13 23 P1 A22 P7 17 P13 D01 U13 66 P1 A16 P2 9 P4 14 P7 3 P13 C09 U13 8 P1 A17 P2 15 P4 13 P4 3 P13 C10 U13 9 DS2 4 P1 B26 P3 15 RN3 6 U13 38 P1 B27 P5 5 RN2 6 U13 37 P1 C32 P5 7 R15 2 RN2 2 U13 27 DS4 16 U20 3 P1 D20 P5 15 U8 23 P1 A30 P2 61 P7 14 P12 B19 U13 76 P1 D26 P2 58 P7 16 P12 B02 R40 1 U5 3 U7 12 M68SC302ADS REFERENCE MANUAL 5 39 For More Information On This Product Go to www freescale com Support Information Freescale Semiconductor Inc RST UST P1 B28 P3 16 RN2 1 U6 4 U13 29 RST UST U6 6 U8 41 U14 28 SOSFAX P1 D25 P5 18 R31 2 U8 9 S2EYDATA P1 D19 P5 14 U2 1 U2 2 U8 22 SAO P1 C8 P2 29 P8 19 P12 A31 U13 6 SA1 P1 B8 P2 28 P8 18 P12 A30 U13 5 SA2 P1 A7 P2 27 P8 17 P12 A29 U13 4 SA3 P1 A8 P2 26 P8 16 P12 A28 U13 3 SA4 P1 B9 P2 25 P8 15 P12 A27 U13 2 SA5 P1 C10 P2 24 P8 14 P12 A26 U13 1 SA6 P1 B10 P2 23 P8 13 P12 A25 U13 100 SA7 P1 A9 P2 22 P8 12 P12 A24 U13 99 SA8 P1 C11 P2 12 P8 11 P12 A23 U13 98 SA9 P1 B11 P2 11 P8 10 P12 A22 U13 97 SA10 P1 A10 P2 8 P8 9 P12 A21 U13 96 SA11 P1 C12 P2 10 P8 8 P12 A20 U13 95 SA12 P1 B12 P2 21 P8 7 P12 A19 U13 94 SA13 P1 A11 P2 13 P8 6 P12 A18 U13 87 SA14 P1 C13 P2 14 P8 5 P12 A17 U13 86 SA15 P1 B13 P2 20 P8 4 P12 A16 U13 85 SA16 P1 A12 P2 19 P7 11 P12 A15 U13 84 SBHE P1 A29 P2 42 P
8. 9 546 8 TS SAT AP e epis i SAB SA s TS SA ATS T f5 ak CLKSEL oz 15 SA cs SAT sU SA A2 TS S013 14 03 SALA Ct3 SAIS B13 A13 ETE TB g BUFXTAL D14 9 LATT 8 Bid 9 iS T An 8 5 T e D15 LAZO C5 B5 AS 5 sz T pte 9 22 C6 8 a23 Teu 9 MEME M6 8 T a 8 DW MIO MEMW AT o Se g CLKI536 pis 09 DR ce TS AEN ss TS POs Am TS Sp m S2EYDATA ps e LIGRNT w tS BALE 59 TS DOE As 09 H a 3 REFOUT 52 TS LARD co SGPS T B20 5 DOY 915 Lr SE wh EYDATCLK oa 9 LLTXO ul CLKOUT ge A o En EP Hw ANON oz TS LICLK Gr e SYSCLK 82 MEG T 8 n alt SN ANDOUT 1S LIS YNC als 823 FOS An 0 en E FREOREF oe TS mine oe TS EPROMEN T B24 9 Ai e 6 Em E SOSFAX D25 i c5 SCPEN B25 A5 6 Em p No RESET 026 S SCPAXD C26 8 PAS B26 i 26 e 9 PEU STLOOPBK s e SCPTXD ars PA EI POs AT e f GCIMO D28 SCPCLK C28 PST UST B28 AB E NS GCM 029 S J S E 829 S SBE A9 ES 3 GMZ 9 STZ c e STNUSE 1S REF ae L s5 ak D31 U ROS Gt BAPUN 831 AM ti POMCIARN C3 Q sg Ay Q i g i 56 46 5 ri 8g J vec sil 2 i 9 Z vec E pH S iy amp EA 3 53 GND GND Ip l V 80 V L 15 Hal z SiE me MOTOROLA INC c 2 8 1 oo PROJECT 302ADS ev PILOT skr 3 or 7 8 19 SND 2b Ag HAIM AMIR cc 10 14 96 DESCRP EEPROM LOGIC CONN and EXP CON 4 29 Go to www freescale com M68SC302ADS REFERENCE MANUAL For Mor
9. S T network with more then on TE on it 3 2 5 Selecting TE or NT on the ISDN S T line interface J2 J5 TE and NT are connected differently on the RJ45 S T connector P10 For TE mode pins 3 6 on P10 are the S T transmit lines and 4 5 are the S T receive lines For NT mode pins 3 6 on P10 are the S T receive lines and 4 5 are the S T transmit lines If TE mode is selected connect the jumpers on pins 1 2 and 3 4 on J2 and J5 If NT mode is selected connect the jumpers on pins 1 3 and 2 4 on J2 and J5 This is shown in Figure 3 1 Figure 3 1 J2 J5 Select TE or NT on the ISDN S T connector Jumper connection for NT mode Jumper connection for TE mode a J2 J5 J2 J5 3 3 SC302 RESET OPTIONS The M68SC302ADS board is supplied from the factory with the ISA reset and PCMCIA reset connected directly to the 68SC302 reset pin DS4 SW 1 OFF This should be sufficient in normal operation However for debugging purposes there is a power on reset circuit that can be enabled by setting DS4 SW 1 in the ON position 3 4 EYE PATTERN GENERATOR CIRCUIT This circuit was designed into the card originally but is not populated because it is rarely used Information on this circuit can be found in the Appendix D of the MC145572 User s Manual 3 5 68SC302 CLKOUT TESTPOINT J6 J6 is a testpoint which is convenient for monitoring the SC302 CLKOUT pin 3 6 IOCHRDY IRQ5 JUMPER J10 This jumper is a three pin jumper When pins 3 and 2 are bridg
10. TE Master mode clock selection M2 M1 MO GCI MASTER MODE 0 0 0 Reserved 0 0 1 Reserved 0 1 0 Reserved 0 1 1 Reserved 1 0 0 GCI_DCL 1 536MHz Terminal node 1 0 1 Reserved 1 1 0 Reserved 1 1 1 GCI_DCL 512KHz 3 2 3 Clock Configuration options with the MC145574 S T transceiver The board is populated at the factory with a dedicated crystal X3 providing the clock to the MC145574 S T chip EXTAL pin It is possible to source the clock from the CLKOUT pin of the 68SC302 eliminating the need for the extra crystal dedicated to the MC145574 To implement a single crystal configuration on the 68SC302ADS board remove R10 and populate R9 with a zero ohm resistor You will also need to replace X2 with a 15 36MHZ crystal you could use the one installed in X3 3 2 4 Point to Point operation mode jumpers J3 J4 The J3 and J4 jumpers allow the MC145574 S T to be operated in a point to point configuration In the point to point mode of operation one NT communicates with one TE MOTOROLA M68SC302ADS REFERENCE MANUAL 3 15 For More Information On This Product Go to www freescale com Design information Freescale Semiconductor Inc In this configuration a 100 ohm termination must be connected across the transmit and receive paths of both the NT and TE transceivers The jumpers connect the 100 ohm resistor to the transceiver line The jumpers should be removed when connecting this board to an
11. it should be ON DS3 SW 5 This dip switch is for the DREQUEST ANDIN pin DS3 5 is only for the NT Star mode to use the ANDIN function When using this mode DS3 5 should be OFF otherwise it should be ON Table 3 2 DS3 functions Number ON OFF Default DS3 1 NT FIX NT ADAPTIVE ON DS3 2 S T IS MASTER U IS MASTER ON DS3 3 NT TE ON DS3 4 NT TERM NT STAR OFF DS3 5 NT TERM NT STAR OFF DS3 7 NT TERM NT STAR OFF 3 2 2 Setting Jumpers J7 J8 J9 for the MC145574 J7 J8 and J9 allow the SC302 pins to be connected to the SCP pins of the MC145574 by connection pin 1 to pin 2 on each jumper These pins on the MC145574 can be grounded by connecting pin 2 to pin 3 on each jumper If a jumper is not installed the pins will be pulled up to 5Volts This is useful for programming the GCI DCL frequency and the channel number in GCI mode Table 3 3 and Table 3 4 show the details of using these pins in GCI mode 3 14 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Design information Table 3 3 GCI NT master mode clock and channel selection GCI_DCL 2 048MHz channel 0 DCL 2 048MHz channel 1 GCI_DCL 2 048MHz channel 2 GCI_DCL 2 048MHz channel 3 DCL 1 536MHz channel 0 DCL 1 536MHz channel 1 DCL 1 536MHz channel 2 1 1 1 DCL 512KHz channel 0 Table 3 4 GCI
12. specifications 3 If the MC145572 U transceiver is used in the application it can provide a 20 48MHZ clock to the 68SC302 from its BUFXTAL pin To connect the MC155572 BUFXTAL pin MOTOROLA M68SC302ADS REFERENCE MANUAL 2 7 For More Information On This Product Go to www freescale com Configuration and installaidhreescale Semiconductor Inc to the SC302 EXTAL pin remove the zero ohm resistor from R35 and remove the 100 ohm resistor from R38 and install a zero ohm resistor in R37 2 3 4 ISDN Transceiver and Line Interface Setup There are two DIP switches that need to be setup for ISDN line transceiver and interface selection DS2 and DS3 Refer to Section 3 Design information for information on how to configure these Dip Switches The board is shipped from the factory configured as described below 2 3 5 Selecting the U interface in master mode NT mode IDL SCP MCU mode Default Table 2 1 shows the dip switch and jumper selections for setting up the card to run in NT mode IDL master mode and using the SCP The board is shipped from the factory with these settings PA3 SCPEN3 is connected to the U interface SCPEN pin Table 2 1 Dip switch settings for U interface in master mode NT mode IDL SCP SWITCH 1 2 3 4 5 6 7 8 DS2 1 1 1 1 0 0 0 X DS3 X 0 X X X X X X Dip switch settings 12 on 0 off X Don t care 2 3 6 Serial EEPROM 2 3 6 1 ISA SERIAL EEPROM INSTALLATION The board is
13. 0 S S SS A 29 SA 5 E Au 5 16 DAR AL SA 16 lS ats 56 SD2 32 op 542 SML AUT S 827 503 de 726 543 SA13 Ag 157 DAR sg 03 A3 AL A pooi 3 SD4 3 5 s SAL B19 BE Dis AL RETRESH 505 os sa SAIL A20 PEFRESH 820 SYSCLK gt SD6 5 23 SAG SA10 An S SYSCLK Ion l gt D6 A6 1S Ato par S S07 6 2 SAT 5 A22 B22 5117 lt 5 49 06 55 ag 12 548 538 AB pos 82 TOS S08 6 op asi S SAT po 824 T 559 65 no mol SATO SAS A25 w B25 s DAP Po S010 66 nto SAUL SAS Az 2c 4 3 os Ap 2 SA12 SAL A27 n B27 S012 38 oi SAI SA AB 2s Auc 528 BALE s013 3 1 SML SA2 29 943 BALE 829 gt zg 28 AL Sa MS SESA gt REM D14 A15 SA SAL 39 15A osc 830 SD15 41 ss 5416 SAO A31 24 taco 31 L i pae LAIT LAQT23 E S 83 e ag 5 END 3 wp P12 TOCHRDY 5 2 gt NT 5 7 NPACK ES A212 2 E 5 8 A22 Iz BA CON2 621 2 a Ape 142 5 3 te 5 gt tiste 4 BVD1 24 55 AEN D01 MSE 3 vst as BE foz DSi ST E LA23 DE isis 2 vs2 LA22 03 03 Pato 36 7 BALE LA22 P010 Tor e OF im SBHE 21 cos i io pon 24 Ris wr EZ ner LA20 C05 oo Patz 95 Faiz GND REG LAB C06 s FOIS Er wepo E MEMW LA18 6 c MEMR LAT m DO MEMWX OVR Teg RESET 06 amo RESET IS gt 519 12 y 2222 SD10 C13 nas 666
14. 25 47K 3 PCMCIARN 2 C gt an 2 1 SCPTXD 1K 1 LYN eth SCPRXD ee C us t GND v RST_UST US T4ACOB AA blo s UBSTUET RESET ok RLO GND V uA 1 SC302RST POWER ON RESET B R49 MUN Y 3 MCt4SS 8 sJ os e 0K RS R19 TR s ol PURST U20 Alte GND nis th To GND1 GND3 i v H e v v v LIRXD GND GND LITXO T V OO Y ISARUN PCMCIARN ME ie INUSE e 9 o amp e 9 o e e TuF_16V F i H Ea STINUSE aur pau ease baur baur lotur 1147y 4 Fue m 10 A 1uF gt M 1uF 1uF R29 C40 C32 C34 C30 C27 C48 2 2 gt C42 T19 Cs Ou Cit e 10 R15 R18 R23 R24 Chh C47 25s R 610 10 10 10 e e e e 5 9 107 m is NL ONE SA NL SAS 1 t 1 nD S nD KONONO eet aur OPF PEF piur piur onr LOL L02 L03 LD4 LDS 106 C6 ci Gs Jes MOTOROLA INC GND vec 4 5 ET M68SC3O2ADS PEV PILOT SHET 6 7 GND enc HAIM AMIR BLOCK Y CHK 10 14 96 bescAP RESET LEDS MOTOROLA Schematics Freescale Semiconductor Inc 4 6 SHEET 6 The reset to the SC302 is connected from the ISA bus or from the PCMCIA bus by the RESET signal or from the power up circuit The power up circuit can be disabled by DS4 1 The S T and the U interfaces can be reset from ISA bus PCMCIA SC302 or from the power up circuit The SC302 port pins The IDL GCI bus and the SCP busses are pulled up 4 32 M68SC302ADS REFERENCE M
15. 7 uw af 5 s 0 Dad 2 14 x GND M a x Re Ss Dx BR Os XJ 58 iso Q a 55 jj PEGS TAB 28 dd 21 1 1 GAAY x TXI 9 e vec elles noc T 2 BPOWN ISET x X TXN be aa E 2 4 anu k 23 15 Slus axn 2 3 mus nx B x a g 4 GREEN E 9 6 TE NT e 4 3 jit 4 5 PED 0S3 TIN TFSC TCLK FIX A 6 BLACK 3 5 mms T 19 2A 2 A T_OPANGE LISYNC 11 BCL LBA TSEN FST vec 35 SK 5 at FSC FSA 9 u yE e 8 BLUE 3 LICLK 12 53 lE Bo EET 15 LK 10 14 1o 7 in RIPO qj ON CLASS DIN ECHOIN H E f m P10 18 VCC L16RNT 4 13 8 Dour PN i EET EM t SC DGRANT ANDOUT z DREQ ANDIN ir Os3 23 K e 5 a 1 22 Men GCIND SPRG b T 21 vos GCIEN SOEN 13 av 2 5 T5 Tiss GCIS2 GCIM2 SCPCLK Hg 1 E GOSL GUML SCPRX V nb xb 9 P4 GCIS0 GCIM0 SCPTX e E 1 2 2 Ul MCLASSTADW 8 UNS a GND E LES e mf of Ut2 1 2 ar Gp x XS1G407 vec 8 e 6 3 When pins 12 ond 3 4 are connected o 9 9 the S T interface amp TE and when 5 pis 13 and 24 ore connected GND Jus the S T interface amp NT 5 ANDIN v pE65857 ANDOUT do i M c Wk T l 2 14 i SCPRXD 1 ad lt E SANI in 6 SCPTXD 1 M ECHO JN l tis B SCPCLK 1 t BC 9 y ov Us SCPEN ST RO7 S T Loop Back in pprocess STLOOPBK R41 R43 R44 s 51 l 510 v A gom DS3 M 8 T MOTOROLA IN
16. 7 12 P13 C01 U13 7 SC302RST P1 B20 P4 15 U7 11 U13 93 SCPCLK DS2 3 J9 1 P1 C28 P3 13 R25 1 U4 2 Ut1 6 U13 47 SCPEN P1 B25 P3 14 RN3 7 U13 46 U14 18 SCPRXD DS2 1 J7 1 P1 C26 P3 11 R26 1 U4 4 Ut1 2 U13 48 5 40 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Support Information SCPTXD DS2 2 J8 1 P1 C27 P3 12 R20 1 U4 3 U11 5 U13 49 SDO P1 A1 P2 30 P6 19 P12 A09 U13 61 SD1 P1 B1 P2 31 P6 18 P12 A08 U13 60 SD2 P1 C3 P2 32 P6 17 P12 A07 U13 59 SD3 P1 A2 P2 2 P6 16 P12 A06 U13 58 SD4 P1 B2 P2 3 P6 15 P12 A05 U13 54 SD5 P1 C4 P2 4 P6 14 P12 A04 U13 53 SD6 P1 A3 P2 5 P6 13 P12 A03 U13 52 SD7 P1 B3 P2 6 P6 12 P12 A02 U13 51 SD8 P1 C5 P2 64 P6 11 P13 C11 U13 12 SD9 P1 A4 P2 65 P6 10 P13 C12 U13 13 SD10 P1 B4 P2 66 P6 9 P13 C13 U13 14 SD11 P1 C6 P2 37 P6 8 P13 C14 U13 15 SD12 P1 B5 P2 38 P6 7 P13 C15 U13 19 SD13 P1 C7 P2 39 Pe 6 P13 C16 U13 20 SD14 P1 B6 P2 40 P6 5 P13 C17 U13 21 SD15 P1 A6 P2 41 P6 4 P13 C18 U13 22 STINUSE P1 B30 P5 9 R12 2 RN2 9 U13 31 STLOOPBK P1 D27 P4 18 U5 6 U5 5 U14 19 ST IRQ2 P1 C30 P3 17 RN2 4 U13 30 U14 20 SYSCLK P1 B22 P4 4 P5 3 P12 B20 UMSTR P1 D5 P5 4 U5 13 U8 43 U13 50 U INUSE P1 B29 P5 8 R16 2 RN2 10 U13 36 U 8 P1 C31 P3 18 RN2 8 U8 44 U13 35 V
17. 72 U interface is being used MOTOROLA M68SC302ADS REFERENCE MANUAL For More Information On This Product Go to www freescale com Design information Design information Freescale Semiconductor Inc 3 11 PCMCIARUN LD3 LD3 is connected to the 68SC302 PA11 pin and can be used for any purpose but is often used to indicate that the PCMCIA interface is being used 3 12 ISARUN LD4 LD4 is connected to the 68SC302 PA10 pin and can be used for any purpose but is often used to indicate that the ISA interface is being used 3 13 L1TXD LD5 LD5 is blinking when the SC302 L1TXD is active 3 14 L1RXD LD6 LD6 is blinking when the SC302 L1RXD is active 3 15 POWER LD7 LD7 is the power indicator for the SC302ADS board 3 16 S T LOOP BACK LD8 LD8 is lighted when the user is using the MC145574 internal loopback in both IDL and GCI modes 3 17 45V POWER SUPPLY CONNECTION The M68SC302ADS requires 5 Vdc for operation The SC302ADS can get its power supply from the ISA Bus connector or from the PCMCIA Bus connector or from P11 the external power supply connector NOTE P11 is not necessary for the normal operation of the board Connect the 5V power supply to connector P11 as shown below Figure 3 2 P11 5V Power Connector 1 Gnd E 2 o 3 P11 is a 3 terminal block power connector with power plug The plug is designed to accept 14 to 22 AWG wires It is recommended to use 14 to 18 A
18. 9 0 47UF 1 C10 100pF 1 C25 0 015uF 1 MOTOROLA M68SC302ADS REFERENCE MANUAL 5 85 For More Information On This Product Go to www freescale com Support Information 5 36 Freescale Semiconductor Inc Reference Value PART NUM Manufacture Total C33 C38 27pF 2 C39 C44 C47 47TuF 16V 3 D1 D2 1N5232B MOTOROLA 2 D3 D4 D5 LL4001G 3 DS1 DS2 DS3 DS4 90HBWO08S GRY HILL 4 J2 J5 J3 J4 TSM102030SDV SAMTEC 3 J7 J8 J9 J10 10303SSV SAMTEC 4 J7 J8 J9 J10 J3 J4 J2 J5 jumper bridge 8 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 LGT679 CO SIMENS 8 P1 WW Male 013175 ERNI 1 P1 Female 043326 ERNI 1 P2 SCD KS68CA ITT 1 P3 P4 P5 P6 P7 P8 LPH20SASG KCC 6 P9 P10 555764 1 AMP 2 P11 253200353 Wieland Bamberg 1 P11 253303353 Wieland Bambe 1 R1 R2 33 2_1 2 R3 R5 R13 5 1K_5 3 R4 R8 R38 100 3 R6 R7 64 9 196 2 R10 R35 Oohm 2 R11 R36 10M 2 R12 R15 R16 R18 R23 R24 R29R30 R4 5100hm 14 1R42 R43 R44 R47 R48 R14 R17 R19 R21 R34 R39 R40 10K 9 R46 R32 R20 R22 R26 R28 1K 4 R25 R27 4 7K 2 R31 100K 2 R33 30 1K 196 30K 596 1 R45 R49 1M 2 RN1 RN2 RN3 10K 3 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Support Information Reference Value PART NUM Manufacture Total TR1 TR2 7 5ohm 2 U1 SOCKET PAL22V10 1 U1 SOCKET U2 74LS164 MOTOROLA U3 AD557 ANALOG
19. ANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Schematics Figure 4 7 SHEET 7 EYE PATTERN DECODER m 111 T if KH ml uu g A Hr 0 E INY uvas lt I D3 2 3 EL 8 z 3 L2 YN b S R4 9 4 9 Lem Et PY 4 a cC PIP bel Je 7 o m S BE ESS SRGEGA Z PIS I 4 ES 4 A TU eo Jo fo J c RA gt E S n gRSRERBS T bles gd 4 a 2 2 38 ESECIESI DE 4 amp e amp xr a gt e Il BER 5 J siR e 59 gt tr lt m SZ SE mds c 5 S m d PENIS 2 5 x co un U N MOTOROLA M68SC302ADS REFERENCE MANUAL 4 33 For More Information On This Product Go to www freescale com Schematics Freescale Semiconductor Inc 4 7 SHEET 7 The EYE Patter Decoder was copied from the MC145572 U interface date sheet and is not populated at the factory For more information refer to Appendix D in the MC145572 User s Manual 4 34 M68SC302ADS REFERE
20. C 8 o s AO N PRUKCT M68SC302ADS PEV PILOT sheer 2 oF 7 GND L 6j enc HAIM AMIR BLOCK E V US CHK 10 14 96 oescap MC145574 CIRCUIT A R f5 H T 4 23 Go to www freescale com M68SC302ADS REFERENCE MANUAL For More Information On This Product MOTOROLA Schematics Freescale Semiconductor Inc 4 2 SHEET 2 S T INTERFACE TRANSCEIVER Sheet 2 has the MC145572 S T interface transceiver and related circuitry The MC145574 reset is derived from either the power up reset the ISA PCMCIA reset or from the SC302 PAQ signal Only one dip switch configures the S T or the U transceiver master mode When the S T is in master mode the U is in slave mode The UMSTR signal goes to sheet 1 to select the U interface to be Master or Slave This prevents the U chip and the S T chip from both driving the DCLK L1SYNC and DOUT signals at the same time DS3 3 is configures the S T to NT or TE If setto on the S T will be in NT mode if off the S T will be in TE mode DS3 1 is for NT mode and selects between fixed and adaptive timing modes on the S T The DSTB signal is connected to logic analyzer connector and to the expansion connector for user applications The DSTB is the D channel Strobe signal When in TE MASTER mode this signal will transition to high during the time when the D bits are being input to the IN pin L18YNC L1CLK L1TXD and L1RXD are the IDL and GCI bus signals DS3 4 5 are enables to
21. CAP3 C1 1 U8 28 XTAL R38 2 U13 91 MOTOROLA M68SC302ADS REFERENCE MANUAL 5 41 For More Information On This Product Go to www freescale com SPECIFICATIONs Freescale Semiconductor Inc SECTION 6 SPECIFICATIONS The M68SC302ADS specifications are given in Table 1 1 Table 5 2 CHARACTERISTICS SPECIFICATIONS Power requirements no other boards attached 5Vdc 2 A typical 2 5 A maximum Operating temperature 0 degrees to 30 degrees C ambient air temperature Storage temperature 25 degrees to 85 degrees C Relative humidity 5 to 90 non condensing Dimensions Height 4 53inches 115 mm Depth 12 6 inches 320 mm Thickness 0 063 inches 1 6 mm 6 42 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc SPECIFICATIONs MOTOROLA M68SC302ADS REFERENCE MANUAL 6 43 For More Information On This Product Go to www freescale com SPECIFICATIONs Freescale Semiconductor Inc 6 44 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com
22. CI ON or IDL OFF modes In IDL mode the U transceiver is controlled by the SCP port and in order to connect the 68SC302 SCP port to U chip SCP pins DS2 SW 1 2 3 4 should be set to ON 3 12 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Design information 3 1 3 Using GCI timing with SCP control on the MC145572 Itis possible to be in IDL mode DS2 SW 6 is OFF and change the U transceiver to operate in GCI mode The IDL interface is configured to accept GCI interface timing by setting MC145572 OR6 b3 GCI Mode Enable to 1 In this mode only 2B D data is transferred between the MC145572 and GCI interface SC302 The other bits in GCI interface are ignored Four signal pins are available in this mode DCL FSC Din and Dout The control and status information for the MC145572 is provided through the SCP port DCL is a 2X bit clock Din accepts data from the IDL interface to be transmitted onto the U interface Dout transmits data received from the U interface onto the IDL interface and FSC is 8Khz frame synchronization pulse Dout is driven only when 2B D data is output from the MC145572 During all other bit times of GCI frame Dout is high impedance 3 1 4 Selecting between NT and LT mode on the MC145572 DS2 SW 5 selects the U interface to be NT OFF or LT ON mode Note that Byte Register 8 bit 0 also controls NT or LT mode selections The SC
23. D2 TTE 17 3 11 PCMCIARUN EDS irse ERR PR RE Oe 18 3 12 ORO IER UTI ROCHE ARD A D 18 3 13 LAT DDS MCCC 18 3 14 IS RX D DD S HUE 18 3 15 dnb 18 9 16 18 3 17 5V Power Supply Connection seesssseeeeeeeeen 18 3 18 ISA BUS CONNECCION Serpro srida dee alin hi adidas dnd a 19 3 19 PAG csset git 19 Section 4 Schematics 4 1 SHEET 1 MC145572 U Interface 22 4 2 SHEET 2 S T INterface Transceiver 24 4 3 SHEET 26 4 4 SHEET Ed a 28 4 5 SHEET HS voeien a E c 30 4 6 esae bui r inm Da DR 32 4 7 SHEET HT Giordano fest MU 34 Section 5 Support Information 5 1 INTRODUGTION soiin eea 35 5 2 INTERCONNECT SIGNAL Sin a rado Ed Dan Ee Pre ni eig ade bi ae 35 5 9 bM E 37 Section 6 SPECIFICATIONs i MC68SC302 USER S MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Introduction SECTION 1 INTRODUCTION This manual provides general information preparation for use and installation instructions operating instructions functional description and s
24. DEVICE U4 SOCKET ST93C46 SGS TOMSON U5 74AC02 MOTOROLA U6 74AC08 MOTOROLA U7 74AC32 MOTOROLA U8 MC145572TQ MOTOROLA U9 PE68628 Pulse Engineering U10 P1300EA70 Pulse Engineering U11 SOCKET X25080 Xicor U12 U19 MMAD1108 MOTOROLA U13 MC68SC302TQ MOTOROLA U13 SOCKET SOCKET U14 MC145574DW MOTOROLA U15 PE65798 Pulse Engineering U16 U17 PE65857 Pulse Engineering U18 SOCKETONLY 20 48Mhz U20 MC1455 MOTOROLA X1 X2 20 48Mhz MSC MSC 1364 phone number 714 433 4510 X3 15 36Mhz 5 3 NETLIST AEN P1 B18 P2 56 P7 13 P12 A11 U13 79 ANDIN DS3 12 P1 D22 U14 9 ANDOUT DS3 13 P1 D23 U14 8 BALE P1 B19 P2 7 P7 15 P12 B28 U13 80 BUFXTAL P1 D14 P5 13 R37 1 U8 21 MOTOROLA M68SC302ADS REFERENCE MANUAL 5 37 For More Information On This Product Go to www freescale com Support Information Freescale Semiconductor Inc CLK1536 CLK4094 CLKOUT CLKSEL DSTB ECHO IN EPROMEN EXTAL EYDATCLK FREQREF GCIMO GCIM1 GCIM2 GCI IN1 GCI IN2 GCI GCI OUT2 IOCHRDY IOCS16 lOW IRQ3 IRQ5 IRQ9 IRQ10 IRQ11 P1 D18 P5 12 U8 18 P1 D16 P5 11 U8 17 J6 1 P1 B21 P3 3 P3 4 R9 1 U13 89 DS2 7 P1 D12 P5 16 R32 2 U8 24 DS3 16 P1 D4 P4 16 RN1 9 U14 6 DS3 7 P1 D3 P4 17 RN1 10 U14 10 P1 B24 P3 19 RN3 8 U4 1 U11 1 U13 39 R35 2 R37 2 U13 92 P1 D21 P5 17 U1 1 U1 13 U8 8 P1 D24 U8 25 J7 2 P1 D28 RN1 5 U14 15 J8 2 P1 D29 RN1 6 U14 16 J9 2 P1 D30
25. Freescale Semiconductor Inc MOTOROLA Microprocessors and Memory Technologies Group M68SC302ADS Application Development System User s Manual Revision 1 0 Motorola reserves the right to make changes without further notice to any products herein Motorola makes no warranty representation or guarantee regarding the suitability of its products for any particular purpose nor does Motorola assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters can and do vary in different applications All operating parameters including Typicals must be validated for each customer application by customer s technical experts Motorola does not convey any license under its patent rights nor the rights of others Motorola products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur Should Buyer purchase or use Motorola products for any such unintended or unauthorized application Buyer shall indemnify and hold Motorola and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages
26. L signal 4 22 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Schematics Freescale Semiconductor Inc Figure 4 2 SHEET 2 MC145574 S T Interface Transceiver A 5 L U E ig RI H f J up When pins 12 and 3 4 are connected z o9 UMSTR ihe S T mierfoce b TE ord wen F pis 13 and 2 4 are connected 1 US 1 1 ua the S T interface amp NT CLKOUT a ts i 912 E m 7 2 le ott RsT_UST amm T e ALAS in x3 GND VEC t vec L a l E cb s 1 NEUES B i I 6 amp H 3 m 22 i E E
27. NCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Support Information SECTION 5 SUPPORT INFORMATION 5 1 INTRODUCTION This chapter provides the interconnection signals and the parts list of the M68SC302ADS board 5 2 INTERCONNECT SIGNALS The M68SC302ADS board interconnects with external devices through the following connectors P1isa 128 pin female expansion connector providing all the signals of the SC302 and most of the MC145572 and MC145574 signals for connection to the user hardware application P2 is a 68 pin female connector to connect the SC302 board to a master PCMCIA board PD3 PD8 are 20 pin male connectors that provides all the signals of the master 90902 for bus monitoring P9 is 8 pin RJ 45 connector for ISDN U interface analog signals to connect to ISDN line P10 is 8 pin RJ 45 connector for ISDN S T interface analog signals to connect to ISDN line P11 is 3 pin connector for 5v power supply input 2 GND pins and 5V pin P12 and P13 are the ISA Bus edge connectors which are part of the board Table 5 1 M68SC302ADS Parts List Reference Value PART NUM Manufacture Total C1 1uF 1 C11 C12 C13 C14 C15 C16 C19 C27 C28 0 1uF 25 C29 C30 C31 C32 C34 C35 C36 C37 C40 C41 C42 C43 C45 C46 C48 C49 C2 C17 C18 C20 C21 C22 C26 0 1uF 7 C3 10uF 16V 1 C4 C6 C23 C24 220nF 200V 4 C5 120nF 200V 1 C7 C8 33pF 2 C
28. P should be disconnected from the U interface if the MC145572 is configured in master GCI mode DS3 SW 2 is OFF DS2 6 is ON DS2 SW 1 4 in the off position 3 1 5 mode clock rate selection on the MC145572 DS2 7 In full GCI the U transceiver provides a 2 048Mhz or 512Khz on the CDL output The frequency can be selected by DS2 7 When DS2 7 is ON the output clock is 512Khz and when DS2 7 is OFF the out clock is 2 048Mhz For more details on the U transceiver look at the MC145572 User Manual 3 1 6 Clock Configuration options with the U transceiver The board is supplied from the factory with the 68SC302 operating with a dedicated 20 48Mhz crystal connected through a zero ohm resistor R35 to the EXTAL pin of the 68SC302 The MC145572 can drive the 20 48Mhz from the BUFXTAL on the MC145572 for NT U interface applications eliminating the necessity for two separate crystals To set the board in this configuration remove R35 and mount a zero ohm resistor in the unpopulated R37 location 3 2 MC145574 S T TRANSCEIVER CONFIGURATION DS3 The MC145574 provides an economical VLSI layer 1 interface for the transportation of two 64kbps B channels and one 16kbps D channel between the network termination or NT and terminal equipment applications or TEs The M68SC302ADS was designed to allow the MC145572 to be configured in most of its operating modes 3 2 1 DIP Switch settings on the MC145574 The following are the DS2 DIP switch
29. SBRETPCCE 2 5 3 PCAI3 a E 4 CLKGENG 14 5 zp EF PCREG SALW POMA A Sur xi 0ohm AEN PCAZ5 SAIS 5 8 BALE 80 AM ae 84 SAB co dir BALE PCCET SM Sari SC302PST 33 eser LAT PEAT Ule 2048Mhz cj gt CLKOUT 89 cikouT LAIB PCAIB JET TAD KE m5 EXTAL 92 LA PCAI PON Fo ESL oot XTAL LA20 PCAZ0 POZPAI2 etar ul oM Un E 21 1 7 Kii x2 EDD z7 L1RXD LA22 PCAZL PGUPMA Eo 17 LAZ3 PCA23 ROS PA1S 5 Tp R38 LICLK LISYNC 45 ie a LIGRNT 41 SYN co LIRO 4g IGRNIVPS NG 040 15 pF L1RO GCIDCL amp 1 50 6 SDO PCDO S tafe 55 SEPRXD 8 cCPRYD 9 50 SCPTXD 19 t 59 512 SCPTXD SD2 PCD2 x sens 7 SCPCLK sopas S 5D 5 Gv denn AVR snape B 506 EPROMEN 3 3 s5 O6 PEN enpa S05_PCOS Hype 6 iL m ap F INS ScPENL PAL S06 PCOS Ds a S RUINS 75cPENZ PAZ SD7PC7 SCPEN3 PA3 S08_PCOB IRO14 13 S 3 SD9 PCD9 IRO6 PAL 37 I nXD PAA 5010 PCDi0 RQS 5019 U_INUSE m SD mE X po as 5511 Poot Haoi SINISE 3r MCLK CLKTX PAS 5012 Pon eo ST Roz IRGINL CLKRX PAT SD13 PCD13 2 SDI TS 5 POINZ7Sc01 P AS SD1 PDA eos 7 5 IRGIN3 50S2 P A9 SD15 PCDi5 7 SARUN Bilge Ay NMSICS PA11 u13 MOTOROLA INC 3 PROJECT M68SC302ADS PILOT steer 3 8 ens HAIM AMIR BLOCK CHK 10 14 96 DESCR M68SC302 B 5 D E F G H I J 4 25 Go
30. WG wires To insure solid ground two Gnd terminals are supplied It is recommended to connect both Gnd wires to the common of the power supply while VCC is connected with a single wire 3 18 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Design information NOTE Since hardware applications can be connected to the M68SC302ADS using the expansion connectors P1 and the additional power consumption should be taken into consideration when a power supply is connected to the 68SC302ADS 3 18 ISA BUS CONNECTOR The ISA bus pinout is shown in Figure 3 3 Figure 3 3 ISA BUS Connector ISAGND ISARESET V O ISAGND A01 SBHE M16 D01 AUT IOCHK LA23 1016 D02 RA SD7 LA22 IRQ10 D03 A01 SD6 LA21 IRQ11 D04 A05 SD5 LA20 IRQ12 D05 A08 SD4 LA19 IRQ15 D06 A07 SD3 LA18 IRQ14 D07 A08 SD2 LA17 DACKO D08 A09 SD1 MEMRD DROO D09 A10 SDO MEMWR DACK5 D10 ATI IORDY D8 DRQ5 D11 A12 AEN D9 DACK6 D12 A13 SA19 D10 DRO6 D13 Ma SA18 D11 DACK7 D14 Ai5 SA17 D12 DRQ7 D15 Me SA16 13 45V D16 M7 SA15 D14 MASTER D17 Ma SA14 D15 ISAGND D18 A S SA13 AT SA12 P13 ALY SATT A21 amp a4n SA10 A22 RO Ae SA9 A23 Sag A24 5A7 A25 SAG A26 SA5 A27 Sag A28 SA3 A29 SAD A30 S41 A31 5A0 P12 3 19 PCMCIA BUS Figure 3 4 shows the PCMCIA connector pinout DS4 SW 8 in the OFF position will enable the PCMCIA interface after 68SC302 r
31. Y amp E 2 BPOWN cc mig s 1P600 150 3 Yellow i MCLASST2 TG apa TAL 4 GREEN RNL 32 5 PED 552 m RESE AXP Y E 1 5 12 42 36 R2 6 BLACK omer I 9 25 NAT 3 7 us si t 1 Uto ORANGE ap an ez B 23 s Bue Ds2 ND PAR SER pJas 2 Ss Ob roo oe e 5 3 at 5 3 amp L 2l 8 EL ile UMSTR Blus IE one 8 SU FRE amp Hh i i 3 337 14 E u E E E LISYNC 1 M 5 13 i 6 E 5 a MEE GND FSX o o 9 Too 15 LicLk ms tur j 315 LITXD 12 T Veet B2 on m PER We LIRXD 13 VrefN E T T RI E v 3 DOU FREGREF 25 FREGREF 2048Mhz E m L2 XIAL 17 CLK4094 j Ms Ex 16 exTAL E 18 CLKIS36 g a BURIAL 21 BUFXTAL BZN Ua 1 Y 22 S2EYDATA a 2 30 VDD Rx S2 EYEDATA DCHCLK 510 E vct Cat 38 it TXBCLK DCHIN 23 REFOUT RAT Q0 7 REFQUT TXMAG GND c cis 2l m z 000 1 pxgcLk ocHouT 24 v i C26 zg 000 2 CLKSEL TXGIG 3 3 i YEARS EYDATCLK S 5 E 5 5 5 S1 SYSBCLK SFAR TSEN 5 9 AT Vss1 S0 TXSFS SFAX 5 alsz ral 9 3 INL SCPEN 3 32 R31 ti VSSI0 1 ISCHIA IT ok ook GND ti CMS OUTLSCPRX 7 ecd c2 04 OUT2 SCPTX m m Us amp VCC s F D 1 y di GND V gs Ds2 a SCPRXD 1 DAC SCPTXD 2 Pa SCPCLK 1a 152 PA3 L ADS e Go to www freescale com M68SC302ADS REFERENCE MANUAL For More Informa
32. and jumpers can be found by referring to Figure 2 1 The board is shipped with dip switch settings as shown in the default column of Table 3 1 Table 3 2 Table 3 5 and Table 3 6 With the default dip switch settings all IRQ DS1 pins are connected to the ISA bus The U transceiver DS2 is configured as NT IDL MASTER The power up reset circuit is unconnected and the reset is connected directly to the ISA bus DS4 The board is configured as an ISA card 2 3 1 Selecting ISA mode The board is shipped with DS4 Switch 8 in the ON position which configures the SC302 pins for ISA mode If the board is going to be used in ISA bus mode verify that DS4 Switch 8 is ON This will configure the 68SC302 pins on RESET to their ISA mode functions 2 3 2 Selecting PCMCIA mode If the board is going to be used in PCMCIA bus mode switch DS4 Switch 8 is OFF This will configure the 68SC302 pins on RESET to their PCMCIA mode functions 2 3 3 Selecting the SC302 clock source The board has three options for providing a system clock to the Extal pin of the 68SC302 1 The board is shipped with parts installed for the 688 C302 to source its clock from the 20 48MHZ dedicated crystal oscillator X2 2 Aclock oscillator U18 can be used In order to use the clock oscillator C33 X2 R36 and R38 must be removed from the board Install a Clock SC Oscillator which complies with the electrical specifications of the 68SC302 see M68SC602 User s manual for
33. c SECTION 3 DESIGN INFORMATION 3 1 MC145572 U TRANSCEIVER The MC145572 U interface transceiver is a single chip device for Integrated Services Digital Network ISDN The M68SC302ADS was designed to allow the MC145572 to be configured in most of its operating modes DS2 are used to configure many of the options on the MC145572 as shown in Table 3 1 Table 3 1 U Chip Configuration Dip Switch DS2 Number ON OFF Default DS2 1 Connects the 68SC302 SCPRXD pin to the OUT2 SCPTX pin MC145572 DS2 2 Connects the 68SC302 SCPTXD pin to the Ginesanecien ON OUT1 SCPRX pin MC145572 DS2 3 Connects the 68SC302 SCPCLK pin to the AREN IN2 SCPCLK pin MC145572 DS2 4 Connects the 68SC302 PAS pin to the IN1 Iree ON SCPEN pin MC145572 DS2 5 LT NT OFF DS2 6 FULL GCI IDL OFF In full GCI mode DS2 1 4 must be OFF In IDL mode DS2 1 4 must be ON DS2 7 For GCI mode only For GCI mode only OFF CLKSEL 0 DCL 512Khz CLKSEL 1 DCL 2 048Mhz DS3 2 SLAVE MASTER OFF 3 1 1 Selecting between S T and U interface master In order to allow the S T and the U transceivers both to be mounted on the board one device should be in Master mode and the other one should be in Slave mode In order to prevent any possibility of IDL GCI bus contention DS3 2 selects between the S T and the U chip as master 3 1 2 Selecting GCI vs IDL on the MC145572 DS2 SW 6 selects between full G
34. description Table 3 2 also shows DS3 switch functions DS3 SW 1 This dip switch is for the T IN TFSC TCLK FIX pin This pin performs four functions depending on the mode of operation In all NT modes except NT Terminal mode this pin is the FIX input and enables the device to differentiate between fixed and adaptive MOTOROLA M68SC302ADS REFERENCE MANUAL 3 13 For More Information On This Product Go to www freescale com Design information Freescale Semiconductor Inc timing modes When DS3 1 is ON low the ADAPTIVE timing is selected and when DS3 1 is OFF high the FIXED timing is selected DS3 SW 2 This is the Master Slave select Dip Switch This is a common dip switch for the S T and the U transceiver s M S input This switch selects which transceiver will be the IDL or GCI master provide the clocks When this dip switch is ON the S T will be master and when this dip switch is OFF the S T will be slave Conversely when this dip switch is ON the U chip will be the slave and when in the OFF position the U chip will be the master DS3 SW 3 This dip switch is selects between TE or NT on the S T chip When the dip switch is ON the S T will be in NT mode after S T chip comes out of reset and when the dip switch will be off the S T will be in TE mode DS3 SW 4 This dip switch is for the SG DGRANT ANDOUT pin DS3 4 is only for the NT Star mode to use the ANDOUT function When using this mode DS3 4 should be OFF otherwise
35. e Information On This Product MOTOROLA Schematics Freescale Semiconductor Inc 4 5 SHEET 5 Sheet 5 shows the P3 P8 logic analyzer connectors to display the SC302 and the necessary pins of the MC145572 and MC145574 pins P1 is an expansion connector which has all the SC302 pins and the necessary pins of the MC145572 and MC145574 pins for the user applications Either U4 or U11 will be populated U11 is for SPI type EEPROMs ST95020 EEPROM or X25080 EEPROM U4 is ST93C46 EEPROM type 4 30 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Schematics p ul Figure 4 6 RESET Pullups and LEDs Freescale Semiconductor Inc 4 31 Go to www freescale com M68SC302ADS REFERENCE MANUAL For More Information On This Product vec vec vec RN2 E 10K 32 PNG i 13 120 8 2 4 Uo LIGRNT UT N amp LA22 a U INUSE v 117X0 E ees IG o 3 STINUSE 9 AR LAM 9 6 8 EPPOMEN 8 7 LIRXD MU UNES inju 28 SCPEN 7 E PAL 6 27 PA3 6 5 LACLK AX GCM 5 ST IRG2 4 GCI IN2 4 ISARUN 3 SCPCLK R
36. ed the IOCHRDY is connected to the ISA Bus from the SC302 When pins 2 and 1 are bridged the IRQ5 is connected from the SC302 to the ISA Bus The default is that IOCHRDY is connected 3 16 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc 3 7 ISA IRQ DIP SWITCH DS1 The 68SC302 IRQs IRQ3 IRQS IRQ10 IRQ11 IRQ12 and IRQ15 are connected to the ISA bus through DS1 DS1 allows the ISA IRQ pins to be disconnected from the 68SC302 multifunction pins so that the 688 C302 pins can be used for other functions Number Table 3 5 ON OFF Default 3 8 DIP SWITCHES DS4 DS4 1 when closed connects the power on reset to the board and selects the desired operating bus for either ISA or PCMCIA Table 3 6 details the purpose of each switch Table 3 6 Eye PAttern Decoder and Power Up Reset Number ON Power On Reset Circuit enabled Eye Pattern Circuit See Schematic Reset from ISA or PCMCIA bus Default ON ISA Bus selected PCMCIA Bus selected ON 3 9 ST INUSE LD1 LD1 is connected to the 68SC302 pin and can be used for any purpose but is often used to indicate that the MC145574 S T interface is being used 3 10 U INUSE LD2 LD2 is connected to the 68SC302 PAS pin and can be used for any purpose but is often used to indicate that the MC1455
37. eset The PCMCIA interface is enabled by pulling MOTOROLA M68SC302ADS REFERENCE MANUAL For More Information On This Product Go to www freescale com Design information Freescale Semiconductor Inc down the 6850302 IOW PC MODE pin low and pulling up the 68SC302 IOR PCE2E pin during 68SC302 reset Figure 3 4 PCMCIA Connector Pinout PCMCIA CONNECTOR 30 AO 31 50 A1 32 D2 A2 2 D3 A3 3 D4 A4 5 D5 AS g D6 A6 64 DU AS RDY BSY i 66 pg A10 37 D10 A11 38 D11 A12 32 D12 A13 21 D13 A14 1g 214 qe 33 D15 AT 59 WP TEE 2 7 INPACK 62 DVD2 A20 63 DvD1 A21 43 VS1 A22 97 50 A23 36 CD4 A24 n 22 CE2 REG WE PGM OE IORD IOWR RESET P2 M68SC302ADS REFERENCE MANUAL For More Information On This Product Go to www freescale com 29 28 27 26 25 24 23 Bae HIS Com ROO MOTOROLA Schematics 4 21 Freescale Semiconductor Inc Figure 4 1 SHEET 1 MC145572 U Interface Transceiver RsT_UsT PJ 58 I lt 1 GPA
38. g U interface running and S T loop back 1 2 GENERAL DESCRIPTION The M68SC302ADS is a development tool for the MC68SC302 device Figure 1 1 shows the block diagram of the board This board is intended for hardware and software development of applications using the MC68SC302 Passive ISDN Protocol Engine PIPE The M68SC302ADS can be connected to ISA Bus or PCMCIA Bus It provides compatibility with both ISDN basic rate layer 1 interfaces S T M145574 and U M145572 Jumpers and MOTOROLA M68SC302ADS REFERENCE MANUAL 1 3 For More Information On This Product Go to www freescale com Introduction Freescale Semiconductor Inc dip switch setting provide flexibility to configure these interfaces in most of their supported modes The M68SC302ADS has logic analyzer connectors and expansion connectors providing physical connection to all pins of the SC302 on the board The logic analyzer connectors enable access to the bus activity and the I O pins of the SC302 and some of the S T and U transceivers pins The expansion connector is located at the top of the board and provides most of the M68SC302 signals and some important transceiver signals This connector is intended to be used as a connector for user specific breadboards or daughter cards for functions such as modems and POTs interfaces 1 4 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Introduc
39. ice GCI General Circuit Interface SCP Serial Communication Port IDL Interchip Digital Link NT Network Termination LT Line Termination TE Terminal Equipment PnP Plug And Play ISA Industry Standard Architecture PCMCIA Personal Computer Memory Card International Association CIS Card Information Structure ISDN Integrated Service Digital Network spec Engineering specification document NMI Non Maskable Interrupt 1 5 REQUIRED EQUIPMENT The M68SC302ADS can operate in two working environments ISA bus PC Card 95 type II card slot M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor lp amp w iguration and installation SECTION 2 CONFIGURATION AND INSTALLATION 2 1 INTRODUCTION This chapter provides unpacking instructions hardware preparation and installation instructions for the M68SC302ADS 2 2 UNPACKING INSTRUCTIONS Unpack equipment from shipping carton Refer to packing list and verify that all items are present Save packing material for storing and reshipping of equipment 2 3 SET DIP SWITCHES AND JUMPERS Before installing the board in the target machine it is necessary to verify that the dip switch and jumper settings on the board are correct for the users desired application The following paragraphs describe these settings and some common configurations The locations of the dip switches
40. lection on the 4 72 13 3 1 6 Clock Configuration options with the U transceiver 13 3 2 MC145574 S T Transceiver Configuration 553 13 3 2 1 DIP Switch settings on the 4 574 13 3 2 2 Setting Jumpers J7 J8 J9 for the 145574 14 3 2 3 Clock Configuration options with the MC145574 S T transceiver 15 MOTOROLA MC68SC302 USER S MANUAL i For More Information On This Product Go to www freescale com Table of Contents Freescale Semiconductor Inc Paragraph Title Page Number Number 3 2 4 Point to Point operation mode jumpers J3 4 15 3 2 5 Selecting TE or NT on the ISDN S T line interface J2 J5 16 3 3 S302 reset ODNOMS x heres tases ance e on ten Exe 16 3 4 Eye pattern generator CirCUit ccccceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeenaeeeeeeeeeeee 16 3 5 68SC302 CLKOUT testpoint J6 eeeeeeeseeeeeeseseee 16 3 6 IOCHRDY IRQ5 Jumper A10 iit tet ete va to 16 3 7 ISA IRQ Dip Switch DS T cbe RR DEDE Ua GE RO EG MM ER Mb 17 3 8 Dip Switches DS4 soot treat hepar UP Ch pede 17 3 9 I SIBI pe 17 3 10 U INUSE L
41. ould be mounted J3 and J4 connect or unconnect the 100 ohm termination When operating in TE mode only one TE should have the 100 ohm termination resistors in the transmit and receive paths J2 and J5 are jumpered differently for NT and TE mode For TE mode pin 1 should be bridged to pin 2 and pin 3 should be bridged to pin 4 on both J2 and J5 For NT mode pin 1 should be bridged to pin 3 and pin 2 should be bridged to pin 4 on both J2 and J5 4 24 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Schematics Freescale Semiconductor Inc B C D E F G H J 1 I vec K i R39A vec 14 2 T 2 Osh PNI 2 d SAQ16 ion PCEZE 5 0 0 I y iow PCMODE SAL_PCAL SAD MEMR PCOE SA2 PCA2 3 MEMW PCWE SA3 PCA3 e 3 GND RG3 PCREADY PCREG SAL PCA E N TG 4700 1 6 PCSTSCHG SA5 PCAS 555 e TRO S DCHRDY PCWAIT S A6 PCAS SS ceo d 46 T MECS 1 6 PCCISCS SAT PCAT D E 77 Ros7bostLs sae BSE 9 3j ROTO7IRasEL2 SA 9 8 pyar wee Roin IROTZ7IROS ELO SAIL PC E BUPXTAL T P FOIS7100 saizpcai2 pisie Q 20 gMfz a sp
42. pin and is connected to the U interface In master mode the MC145572 outputs the FSX and FSC in the same wave form so the FSX is not needed and the pin is pulled up FSX is not used in GCI mode so only the FSC pin is used to synchronize the IDL and GCI frames L1SYNC L1CLK L1TXD and L1RXD are the SC302 signals used for the IDL and GCI buses The MC145572 SCP pins are SCPEN SCPCLK SCPTX and SCPRX and these pins are used in IDL mode These pins are not used in full GCI mode In GCI mode these pins are IN1 IN2 OUT1 and OUT2 In full GCI mode DS2 1 4 should be OFF and these signals can be accessed at the expansion connector for other applications The MC145572 has an IRQ pin to use in IDL mode and is connected to the SC302 PA6 pin on sheet 3 The CLKSEL signal has a dip switch to select the DCLK frequency in GCI mode If CLKSEL is 0 DS2 7 is OFF the U transceiver DCLK frequency is 512khz and if CLKSEL is 1 DS2 7 is ON the U transceiver DCLK frequency is 20 48Mhz The CLK4094 CLK1536 REFOUT and FRQREF signals are connected to the expansion connector to enable the user to use these pins BUFXTAL signal is the MC145572 buffered XTAL signal it is connected to R37 on sheet 3 which is a 0 ohm resistor unpopulated This resistor can be populated to allow the MC145572 to drive the SC302 EXTAL from the BUFXTAL signal Before mounting this resistor R35 must be removed to prevent contention between the crystal signal and the BUFXTA
43. shipped from the factory with two serial ISA mode serial EEPROMS An ISA IO mode serial EEPROM is installed in either U4 or U11depending on the type U4 is a 9346 type and U11 is a 25XX or 95XX SPI type EEPROM A ISA memory mode EEPROM is also included At the time of printing all Motorola factory support software is for ISA IO mode accesses 2 3 6 2 PCMCIA SERIAL EEPROM INSTALLATION For PCMCIA applications it is necessary for the user to remove the supplied ISA mode serial EEPROM U4 or U11 and provide their own programmed serial EEPROM for the CIS it is recommended to use a 25XX or 95XX SPI type serial EEPROM installed in U11 Please refer to the 68SC302 User s Manual for information on creating the CIS for this EEPROM 2 8 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor lp amp iguration and installation Figure 2 1 M68SC302ADS Parts Layout Dv n ZO SIUS c 892352 gu 2x xB oc 9ce amp D m z no ane 5 mm m um mmm ZBIRFRR8R8 99 eo ee 99 eo eo ee 99 9 99 eo eo o0 o0 o0 o0 99 6 99 99 ee 99 eo eo ee 155 99 99 eo 3 leo 3 leoi 99 99 99 eo ee eo 99 E 99 eo oo 99 99 99 99 99 e 06 99 eo eo eo 99
44. space of the SC302ADS Verify that the card is loaded into the system by finding the device in the Device Manager in the System ICON in the Control Panel Verify that the card was given the desired interrupt memory or IO space Note the locations for future reference For the IO EEPROMS currently shipped with the ADS board you should get a 4 byte internal space this is for internal SC302 memory and register accesses You will also get an external memory space for the external chip select You should now be able to access the card using SC302Bug from Motorola or the DOS debug command A good way to verify that the card is installed properly in the PC is to turn on the one of the LEDs see schematic in and 68SC302 users manual for PIO pins and register locations M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor lp amp w iguration and installation Figure 2 2 Installing the M68SC302ADS board in an ISA system 2 3 7 2 PCMCIA BUS INSTALLATION 1 Insure that the PC is turned off 2 Plug the PCMCIA connector P2 card into a free PCMCIA slot Figure 2 3 3 Turn on the PC Figure 2 3 Installing the M68SC302ADS in a PCMCIA slot D SC302ADS CONNECTED TO PCMCIA BUS MOTOROLA M68SC302ADS REFERENCE MANUAL 2 11 For More Information On This Product Go to www freescale com Design information Freescale Semiconductor In
45. tion Figure 1 1 688C302ADS Block Diagram 2 wire 4 wire U INTERFACE S T INTERFACE oC302ADS BOARD Motorola MC145572 U interface Motorola MC145574 S T Interface MASTER TE NT IDL GCI SCP i r MASTER NT LT 128PIN EXPANSION CONN IDL GCI SCP Logic Analyzer Connectors MC68SC302 CIS PnP EEPROM 93C46 SOCKET CIS PnP EEPROM X25080 SOCKET CIS PnP EEPROM ST95020 SOCKET PCMCIA BUS CON ISA BUS CONN MOTOROLA M68SC302ADS REFERENCE MANUAL 1 5 For More Information On This Product Go to www freescale com Introduction Freescale Semiconductor Inc 1 3 RELATED DOCUMENTATION The following publications are applicable to the M68SC302ADS and may provide additional helpful information M68SC302 User s Manual MC145572 U interface User s Manual MC145574 S T interface User s Manual ISA and EISA theory and operation Edward Solari ISBN 0 929392 15 9 The PC Card Standard PCMCIA Association 408 433 CARD Plug and Play Specification Intel Corporation 1 4 ABBREVIATIONS USED IN THE DOCUMENT SC302 ISDN Passive ISDN Protocol Engine PIPE ADS Application Development System board U Interface The physical access point to the ISDN at the U reference point S T Interface The physical access point to the ISDN at the S T reference points SC302ADS Application Development System for the SC302 dev
46. tion On This Product MOTOROLA INC PROJECT M68SC302ADS REV PILOT 5 1 or 7 exc HAIM AMIR BLOCK THK 10 14 96 os cap MC145572 CIRCUIT SECTION 4 SCHEMATICS MOTOROLA Schematics Freescale Semiconductor Inc 4 1 SHEET 1 MC145572 U INTERFACE TRANSCEIVER Sheet 1 shows the Motorola MC145572 U Interface and all the necessary dip switches to configure it with the exception of the M S selection which is DS3 2 on sheet 2 The MC145572 reset is derived from the power up reset circuit or from ISA PCMCIA reset or from the SC302 PA9 signal There is a logical OR between these two sources DS2 handles the following MC 145572 signals DS2 5 selects the NT LT mode when DS2 5 is ON the MC145572 is in LT mode and when the DS2 5 is OFF the MC145572 is in NT mode DS2 6 selects the IDL GCI mode when DS2 6 is OFF the MC145572 is in IDL mode When in IDL mode DS2 1 4 should be ON to connect the MC145572 SCP to the SC302 SCP When DS2 6 is ON the MC145572 is configured for Full GCI mode the DS2 1 4 must be OFF NOTE In the case that DS2 6 is OFF even when using the S T only DS2 1 4 must be ON The MC145572 is configured for a serial device PAR SER signal connected to GND Only one dip switch is selected to configure the S T or the U to a master mode to prevent both interfaces from ever becoming the master at the same time The UMSTR signal from sheet 2 is the inverse of the S T M S
47. to www freescale com M68SC302ADS REFERENCE MANUAL For More Information On This Product MOTOROLA Schematics Freescale Semiconductor Inc 4 3 SHEET 3 Sheet 3 shows the MC68SC302 R37 and R35 allow the 68SC302 EXTAL to be driven by either the MC145572 BUFXTAL signal or by crystal X2 R35 is mounted on the board and R37 is unmounted so the crystal to drives the clock to the SC302 R39 and RN1 11 are made to enable the SC302 to select between ISA and PCMCIA mode All of the SC302 pins are connected to the logic analyzer connectors and to the expansion connector 4 26 M68SC302ADS REFERENCE MANUAL MOTOROLA For More Information On This Product Go to www freescale com Schematics Freescale Semiconductor Inc Figure 4 4 SHEET 4 ISA BUS AND PCMCIA BUS vcc 4 I A CONL A L o OR 5 AGNI Hm RESET S ARESET i 803 b Bt L gt Tos 804 POD LAQT23 B05 oraz 8 2 aov 887 16 NOws 58 550 2 BO vec a 3 a READY E AGNO2 e 0 0 15 CRM ibus B12 C T 1 A13 813 DW lale als dese S Al DWA 30 er BE 29 5 0 SAQ44 SA16 As St BE 31
48. upport information for the M68SC302 Application Development System board 1 1 FEATURES The main features of the M68SC302ADS board are as follows MC68SC302 operating 20 48Mhz Host computer interface with ISA Bus or PCMCIA bus ISA PnP Interface supporting 8 and 16 bit memory and IO accesses Option for three types of serial EEPROM for the PCMCIA or ISA Configuration Powered by the ISA PCMCIA connectors or external power connector A complete connectivity with 2B1Q for connection to U interface The U interface transceiver MC 145572 interfaced to the M68SC302 either by IDL or GCI interface selectable Can be configured in NT or LT mode The U interface transceiver MC145574 interfaced to the M68SC302 either by IDL or GCI interface selectable Can be configured in TE or NT mode The S T interface transceiver MC 145574 used as a Master TE or NT interfaced to the M68SC302 The MC68SC302 can set up to have its system clock provided by the by the MC 145572 BUFEXTAL output requiring only one crystal in the system The S T transceiver can use the M68SC302 system clock for its system clock requiring only one crystal in the system Logic analyzer connectors compatible to probe M68SC302 activity and some of the S T and the U transceivers signals 128 pin expansion connector provides access to all of the MC68SC302 pins and to most of the S T and U transceivers pins Status LEDs for ISA bus PCMCIA bus RXD TXD S T interface runnin
49. use the MC145574 in NT Star mode applications In the NT Star mode DS3 4 5 should be off to use the signals ANDIN and ANDOUT in all other modes the DS3 4 5 should be on to use the L1GRNT and L1RQ signals J7 J8 and J9 are used to enable the use of all the functions of the GCISO GCIMO SCPTXD GCIS1 GCIM1 SCPRXD and GCIS2 GCIM2 SCPCLK signals In IDL mode pin 1 and 2 should be connected In GCI INDIRECT mode these jumpers can select the Time Slot Assignment In GCI Direct mode they can select the GCI_DCL frequency for NT or TE Master mode The SCPEN signal is connected to the SC302 PA1 SCPEN1 pin and is the enable pin for SCP This pin also enables the GCI to be in GCI direct mode When this pin is low during MC145574 reset the MC145574 will power up in GCI Direct mode CLASS DIN ECHOIN PIN DS3 7 is used in TE mode The CLASS input used to determine the D Channel access class In NT terminal mode this pin is the D input D channel data is input on this pin In NT star mode this pin is the ECHO input for use in NT star applications The ECHO signal is connected to the logic analyzer connector and to the expansion connector R9 and R10 are Oohm resistors R10 is populated and R9 unpopulated In normal operation the MC145574 is clocked by the 15 36Mhz crystal It is possible to clock the MC145572 by the SC302 CLKOUT signal This should be a 15 36MHZ clock signal only When using the SC302 CLKOUT signal R10 should be removed and R9 sh
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