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BVME4000/6000

52

Copyright 

 1993,1995,1998,2001 BVM Ltd.

7.13 Parallel 

Port/Timer

7.13.1 Overview

The Parallel Interface/Timer (PI/T) is based on the MC68230. This block provides a bi-directional, 8-
bit, double-buffered, Centronics compatible parallel Interface. This interface is electrically buffered to
provide 48mA of drive. Connection can be made via the front panel connector JP3 or via a paddle
board connected to the backplane P2.

The PI/T provides internal Board Control Register functions to control SCC clock selection, Watchdog
refresh and VMEbus Arbitration Selection.

The PI/T contains an independent, 24-bit timer with a 5-bit prescaler. The timer may be clocked from
the PI/T clock pin or from the T1 output pin of the RTC Timer 1 - refer to "7.12 Real Time
Clock/Timers (on page 50)" for more details. It can generate periodic interrupts or a single interrupt
after programmed time period. The CLK pin is driven from CPUCLK divided by 4, thus with a 25MHz
bus clock, the PI/T CLK is driven at 6.25MHz.

For full programming details, refer to the MC68230 documentation detailed in the "A.7 MC68230 (on
page 60)" section of this manual.

7.13.2  Port A Usage

The MC68230 port A is available for use as an 8-bit parallel I/O port. It is buffered using a bi-
directional transceiver to give 48mA of drive. The direction control of the transceiver is via port C -
refer to "7.13.4 Port C Usage (on page 54)" for more details. Any of the port A sub-modes may be
used. However, because the port is connected to an 8-bit wide transceiver, ALL the bits must be
programmed to be in the same direction; all inputs or all outputs. The direction programmed must
match that of the transceiver set up via port C.

7.13.3  Port B Usage

The MC68230 port B is dedicated as an internal Board Control Register. This port needs to be
configured for simple pin I/O. Therefore the MC68230 must be configured for Port Mode 0. This is set
up in the PORT GENERAL CONTROL REGISTER by programming bits 7 & 6 both CLEAR. Port B
must be configured to Sub Mode 1X. This is set up in the PORT B CONTROL REGISTER by
programming bit 7 SET.

D7

D6

D5

D4

D3

D2

D1

D0

OUT

OUT

OUT

OUT

OUT

IN/OUT

OUT

OUT

/RRS

/SYSCON

RQLVL1

RQLVL0

SCL

SDA

SCLKA

SCLKB

Bit 7:

/RRS: Round Robin Select.

This must be programmed as an output pin. This bit controls the VMEbus arbitration
mechanism used by the BVME4000/6000 when enabled as a System Controller. When the bit
is SET straight prioritised (PRI) or single level (SGL) is used. When CLEAR Round Robin
Select (RRS) is used. See Section 3 of the VMEbus Specification for a full description - refer
to  "A.8 VMEbus (on page 60)" for details of this documentation.

Bit 6:

/SYSCON: System Controller Function Enable.

This must be programmed as an output pin. This bit controls whether the BVME4000/6000 is
the VMEbus System Controller unless overridden by the System Controller Link - refer to
"5.2.12 LK22 VMEbus System Controller Enable (on page 17)" for more details. When
programmed as the VMEbus System Controller, the BVME4000/6000 performs as the
VMEbus arbiter, it drives VMEbus SYSCLK and VMEbus BCLR. When the bit is SET the
BVME4000/6000 is NOT the System controller. When CLEAR the BVME4000/6000 is the
VMEbus System Controller.

Содержание BVME4000

Страница 1: ...p www bvmltd co uk Board Revision F Manual Revision I 21 February 2001 This material contains information of proprietary interest to BVM Ltd It has been supplied in confidence and the recipient by acc...

Страница 2: ...This page is intentionally left blank...

Страница 3: ...is provided as Copyright BVM Ltd is proprietary and confidential property of BVM Ltd and each single copy is given on the agreed understanding that it is licensed for use on product combinations supp...

Страница 4: ...option Damage may result if users attempt to remove or fit memory modules incorrectly Do not fit remove the 68040 68060 device to from the BVME4000 6000 Special tools are required to fit and remove th...

Страница 5: ...VMEbus Interrupt Handler 8 3 11 2 Internal Interrupts 8 3 11 3 VMEbus Interrupter 8 3 12 VMEbus System Controller Functions 9 3 13 Power Supply Monitor Watchdog 9 3 14 Local Bus Monitor 9 3 15 Config...

Страница 6: ...rotection Fuses 24 7 Programming 25 7 1 Address Map 25 7 1 1 I O Address Map 26 7 2 Memory Module 26 7 3 VMEbus Master Access 27 7 3 1 A16 D16 D08EO 27 7 3 2 A16 D32 27 7 3 3 A24 D16 D08EO 27 7 3 4 A2...

Страница 7: ...O A16 Accesses 46 7 10 4 Controlling The Window Size 46 7 10 5 Local Address Generation 46 7 10 6 Address Control Registers 47 7 10 6 1 A32VBA A32 VMEbus Base Address Register 47 7 10 6 2 A32MSK A32 V...

Страница 8: ...Programmers Guide 60 A 5 DP8570A Data Sheet 60 A 6 Z85230 User s Manual 60 A 7 MC68230 Data Sheet 60 A 8 VMEbus Specification 60 A 9 RS422 485 Interface Module User s Manual 60 A 10 AM29F040 Data Book...

Страница 9: ...ion Disable Location 16 Figure 13 LK18 19 CPU 5 3 3V Selection Location 16 Figure 14 LK21 SRAM Backup Selection Location 17 Figure 15 LK22 VMEbus System Controller Enable Location 17 Figure 16 Configu...

Страница 10: ...viii This page is intentionally left blank...

Страница 11: ...b SRAM Other versions of the BVME4000 are available to special order where any of the VMEbus I F ETHERNET SCSI IP I F may be omitted or 512Kb SRAM fitted Contact your supplier for details 1 3 BVME6000...

Страница 12: ...2 1 Board Layout STATUS LEDs VMEbus P1 CONN ABORT RESET SERIAL CH B SERIAL CH A IP I O CONN CHEAPER PRINTER CONN NET LOW PROM HIGH PROM MEMORY MODULE INTERFACE 2 X 50 WAY VMEbus P2 CONN 68040 or 6806...

Страница 13: ...6 bit IP Compatible Sites Double height 32 bit access supported Expansion Connector allowing 4 IP Compatible Site daughter board 8MHz 32MHz and proprietary high speed Source Synchronous Modes supporte...

Страница 14: ...troller 50 way Direct Connector EPROM 2Mb 16 Bit Wide Serial Buffers 14 way Connector JP2 14 way Connector JP1 P2 Serial SRAM 512Kb 2Mb 32 Bit Wide Memory Module R T C 2 x Timers IP Interface IP A IP...

Страница 15: ...M memory modules allowing use of memory modules which currently include 8 to 48Mbytes DRAM 5 3 3 3 access at 33MHz bus clock 16 to 512Mbytes DRAM 4 1 1 1 read 3 2 2 2 write at 25 33MHz bus clock 16Mby...

Страница 16: ...he SCSI interface further minimising processor overhead The SCSI interface is connected to a dedicated 50 way connector and is also available via the P2 connector 3 8 Ethernet Interface An Ethernet In...

Страница 17: ...hange Both schemes use FAIR requesting ensuring each master has an equal chance of obtaining the bus Digital bus busy filtering and arbitration interleaving is used to ensure premium arbitration perfo...

Страница 18: ...PU 3 11 2 Internal Interrupts Internal CPU interrupts are generated from a variety of sources as detailed in the table below Source Level Type VMEIRQ7 1 IRQ7 1 Vectored ACFAIL 7 Auto ABORT 7 Auto 8570...

Страница 19: ...sor watchdog capability controlled via the Board Control Register If enabled the processor will be reset if the software fails to maintain pulses to the watchdog circuit 3 14 Local Bus Monitor All bus...

Страница 20: ...l cables to JP1 and or JP2 if not using the P2 connections 8 If using Cheapernet connect the Cheapernet BNC T connector to the BVME4000 6000 BNC connector or if using the optional 10BaseT connect the...

Страница 21: ...0 1 L 1 2 LK13 IC 2 XM1 INTERRUPT CONTROLLER INDUSTRY PACK LK21 LK22 3V 5V ABORT RESET CHEAPERNET CONFIG SWITCH IP B CONNECTOR IP A CONNECTOR LEDS SERIAL B SERIAL A LK15 LK14 DISK POWER CONNECTOR LK2...

Страница 22: ...nd are not available for user s 5 2 1 LK1 Abort Switch Enable Figure 4 LK1 Abort Switch Enable Location Fitting this link enables the ABORT switch to generate interrupts LK1 Function 1 2 Fitted ABORT...

Страница 23: ...bus 1 2 Omitted NO VMEbus RESET from BVME4000 6000 5 2 4 LK4 VMEbus Reset In Enable Figure 7 LK4 VMEbus Reset In Enable Location This link allows the BVME4000 6000 to be reset from the VMEbus RESET si...

Страница 24: ...MC68040 68060 CACHES ENABLED 5 2 6 LK6 Cheapernet Heart Beat Enable Figure 9 LK6 Cheapernet Heart Beat Enable Location This link allows the CHEAPERNET Heartbeat function to be enabled LK6 Function 1...

Страница 25: ...elect Location These links selects the size of EPROM in the IC44 45 32 pin EPROM sockets A 27C512 28 pin EPROM should be fitted to the lower 28 pins of the socket pins 1 2 31 32 unused LK10 LK11 LK12...

Страница 26: ...NO SCSI bus termination on BVME4000 6000 5 2 10 LK18 19 CPU 5 3 3V Selection Figure 13 LK18 19 CPU 5 3 3V Selection Location These are factory set links when a 68040 series CPU is fitted 5V is select...

Страница 27: ...his link forces the BVME4000 6000 to be the VMEbus System Controller so the BVME4000 6000 performs as the VMEbus arbiter drives VMEbus SYSCLK and VMEbus BCLR The normal selection for this function is...

Страница 28: ...t 0 in the BVME4000 6000 Configuration Switch Register refer to 7 11 2 Configuration Switch Register on page 49 5 3 Indicators 5 3 1 Green LED RUNNING The GREEN RUNNING LED indicates that the BVME4000...

Страница 29: ...ce Module on page 60 section of this manual 6 2 JP3 Parallel Port Connections JP3 carries the parallel port signals and the layout is designed to connect directly to a standard 36 way connector as sho...

Страница 30: ...piece If the BVME4000 6000 is to be removed from the network this is simply accomplished by disconnecting the BVME4000 6000 BNC connector JP4 from the T piece leaving the T piece connected to the cab...

Страница 31: ...ed with many mass terminated connectors Each type of connector has its own intrinsic pin numbering system Systems integrators or users making their own cables must be certain which pin corresponds to...

Страница 32: ...is is for factory use only to program the internal BVME4000 6000 logic devices Figure 23 JP8 JTAG Connector 6 8 J1 SCSI Connections J1 carries the SCSI interface signals The connector pinout allows a...

Страница 33: ...ins The centre row Row b carries VMEbus 32 bit extension signals The other two rows carry BVME4000 6000 specific I O connections P2 Connection Row a Row c 1 TxDA RxDA 2 RTSA CTSA 3 DTRA DCDA 4 SCLKOUT...

Страница 34: ...eir functions positions rating and type Location see below Function Rating Type LittleFuse F1 SCSI TERM PWR 1 5A ALF II 42901 5 F2 ETHERNET 9V 200mA ALF II 429 200 F3 J14 5V 2A ALF II 429002 F4 J14 12...

Страница 35: ...8FFFFFF EPROM 16Mb 2Mb valid D16 non cached serial 4 5 F9000000 F9FFFFFF SRAM alternate 16Mb 2Mb valid D32 non cached serial 3 5 FA000000 FCFFFFFF Reserved 48Mb FD000000 FDFFFFFF VMEbus A24 D32 16Mb D...

Страница 36: ...ules are available in various configurations DRAM SRAM FLASH and sizes and access speeds Refer to the relevant Memory Module documentation detailed in the Appendix A Data Sheet Manual References on pa...

Страница 37: ...dress Modifier AM codes are generated CPU Supervisor Data Access 2D CPU User Data Access 29 7 3 2 A16 D32 Base Address FFEF0000 Size 64Kbyte Accesses to this area perform a Short I O access to VMEbus...

Страница 38: ...he following Address Modifier AM codes are generated CPU Supervisor Program Access 0E Data Access 0D CPU User Program Access 0A Data Access 09 7 3 6 A32 D32 Base Address Immediately above the Memory M...

Страница 39: ...fer to 7 10 VMEbus Slave Access Controller on page 45 for RAMLO setting 7 5 EPROM Base Address E8000000 or F8000000 Size 2Mbyte The BVME4000 6000 provides 2 x 32 Pin EPROM JEDEC compatible sockets tha...

Страница 40: ...s for SCSI data transfers Note that the 53C710 is configured for Big Endian Mode This can affect addressing in fairly subtle ways For full programming details refer to the 53C710 documentation detaile...

Страница 41: ...W DSA Data Structure Address FF000014 B R CTEST3 Chip Test 3 FF000015 B R CTEST2 Chip Test 2 FF000016 B R CTEST1 Chip Test 1 FF000017 B R W CTEST0 Chip Test 0 FF000018 B R W CTEST7 Chip Test 7 FF00001...

Страница 42: ...erminators are active when LK13 is omitted When LK13 is fitted then the BVME4000 6000 terminators are completely disabled and provide no load to the SCSI bus The BVME4000 6000 drives TERMPWR and uses...

Страница 43: ...er to the 82596CA documentation detailed in the A 3 82596CA on page 60 section of this manual Although the CPU and the 82596CA do not generally communicate directly there is a virtual register that th...

Страница 44: ...ust be set up as follows Bit 6 Must be set INT Bit 5 Must be clear active high interrupt LOCK Bit 4 LOCKed cycles are supported on the BVME4000 6000 It is recommended that the LOCK function be enabled...

Страница 45: ...see 7 8 4 1 VMEIRQ Enable Register on page 36 VMEbus ACFAIL 7 Auto vectored Where multiple sources are generating interrupts on the same level the acknowledge cycle is prioritised as follows Highest P...

Страница 46: ...VIEN4 VIEN3 VIEN2 VIEN1 ACFEN FF200007 VMEIRQ Vector VEC7 VEC6 VEC5 VEC4 VEC3 VEC2 VEC1 0 VMEIRQ Level Rsrvd Rsrvd Rsrvd Rsrvd VLVL2 VLVL1 VLVL0 1 FF20000B LOCIRQ Enable Rsrvd Rsrvd Rsrvd Rsrvd Rsrvd...

Страница 47: ...us Slave Operation After RESET this bit is CLEAR i e location monitor interrupts disabled This bit is used to clear the Location Monitor Interrupt during interrupt service routines The interrupt is cl...

Страница 48: ...n be used to determine that the ACFAIL signal was the source of an Auto vector level 7 interrupt Bit 1 ETHERR Ethernet ERROR Interrupt This bit indicates that a 82596CA Ethernet Controller BUS ERROR h...

Страница 49: ...ppendix D IP Expansion Interface Pinout on page 67 for details The BVME4000 6000 contains all the state machine and multiplexing logic thus minimising daughter board circuitry requirements The interfa...

Страница 50: ...used to take the double size IP Thus A26 to A0 are used by the IP s or IP Interface for memory space decoding as shown below Address Range A 26 23 Size IP Selected IP A 22 A1 E0000000 E07FFFFF F00000...

Страница 51: ...027F 0010 0 128 byte D16 IP C I O A6 A1 FF800280 FF8002FF 0010 1 128 byte D16 IP C ID A6 A1 FF800300 FF80037F 0011 0 128 byte D16 IP D I O A6 A1 FF800380 FF8003FF 0011 1 128 byte D16 IP D ID A6 A1 FF8...

Страница 52: ...ry code written selects the corresponding interrupt level e g 101 selects level 5 When set to 000 no interrupt can be generated After RESET these bits are CLEAR i e interrupt generation disabled 7 9 6...

Страница 53: ...AR IP B is clocked at 8MHz or CPU Clock divided by four depending on the setting of SYNCX bit of the IP SYNCB Clock Select Register When SET the IP expansion interface is clocked at 32MHz or CPU Clock...

Страница 54: ...ck frequency or CPU clock divided by 4 again dependent on the CLKB bit After RESET this bit is CLEAR i e 8 32MHz clock selected Bit 0 SYNCA IP A SYNC Clock Select When CLEAR IP A is clocked at 8 or 32...

Страница 55: ...00C80000 The address decoding for A24 and A32 accesses are separate from each other There are two decoders one for A24 and one for A32 They both work by comparing the most significant byte of the addr...

Страница 56: ...A32 Address Space Window Size 00 64Kb 16Mb 01 128kb 32Mb 03 256kb 64Mb 07 512Kb 128Mb 0F 1024Kb 256Mb 1F 2048Kb 512Mb 3F 4096Kb 1024Mb 7F 8192Kb 2048Mb FF 16384Kb 4096Mb 7 10 5 Local Address Generatio...

Страница 57: ...en the corresponding address line is ignored Thus the contents of this register control the size of the window decoded by the BVME4000 6000 refer to 7 10 4 Controlling The Window Size on page 46 for m...

Страница 58: ...e accesses are snooped by the CPU so that the CPU will sink and source dirty data refer to Appendix B CPU Cache Coherency and Bus Snooping on page 62 for a discussion on snooping and cache coherency B...

Страница 59: ...tion Switch Register 7 11 1 Configuration Switch Layout Figure 27 Configuration Switch Layout 7 11 2 Configuration Switch Register Address Register D7 D6 D5 D4 D3 D2 D1 D0 FF500003 CONFSW Rsrvd Rsrvd...

Страница 60: ...ware Specific Considerations INTR pin Configuration The INTR pin is fed to the Interrupt Controller refer to 7 8 Interrupt Controller on page 35 for more details It must be programmed as an active low...

Страница 61: ...t Mode Timer 1 Control FF90000F RAM Interrupt Control 0 Periodic Flag FF900013 RAM Interrupt Control 1 Interrupt Routing FF900017 RAM 1 100 Second Counter FF90001B RAM Seconds Clock Counter FF90001F R...

Страница 62: ...8 bit wide transceiver ALL the bits must be programmed to be in the same direction all inputs or all outputs The direction programmed must match that of the transceiver set up via port C 7 13 3 Port...

Страница 63: ...the EEPROM The bit sets the data to the EEPROM in output mode and reflects the data from the EEPROM in input mode For full programming details refer to the NM24C02 documentation detailed in the A 11 N...

Страница 64: ...n is connected to the Interrupt Controller s PARIACK line Bit 5 PIRQ Parallel Port Interrupt Request This output drives the 68230 Parallel Interrupt input to the Interrupt Controller refer to 7 8 Inte...

Страница 65: ...FA0000B Port A Data Direction Register R W Yes No FFA0000F Port B Data Direction Register R W Yes No FFA00013 Port C Data Direction Register R W Yes No FFA00017 Port Interrupt Vector Register R W Yes...

Страница 66: ...lexer controlled by the SCLKA bit of the BOARD CONTROL REGISTER Refer to 7 13 Parallel Port Timer on page 52 for more details of this register The clock source can be selected between an onboard 7 372...

Страница 67: ...nnel These are generally accessed as a two step procedure First the register to be accessed is written to the Control Register then the next access to the Control Register accesses the referenced Read...

Страница 68: ...pin CPU PROM sockets 16 bit wide accept 512Kbit to 8Mbit EPROM s 4Mbit FLASH 90ns 25MHz bus 120ns 33MHz bus 512K 2Mbytes CMOS SRAM 32 bit wide battery backed up to 7 days or 2 5 years 32 bit wide memo...

Страница 69: ...STEM CONTROLLER enable CPU cache inhibit Cheapernet Heartbeat enable Cheapernet Ethernet select PROM type SCSI Termination select SRAM backup source select PROGRAM VMEbus SYSTEM CONTROLLER functions V...

Страница 70: ...r 296853 001 INTEL 82596CA HIGH PERFORMANCE 32 BIT LOCAL AREA NETWORK COPROCESSOR DATA SHEET July 1992 INTEL order number 290218 005 A 4 53C710 Data Manual Programmers Guide NCR53C710 53C710 1 SCSI I...

Страница 71: ...391 A 13 MEM400 Memory Module User s Manual MEM400 16Mbytes DRAM 4 8 Mbytes FLASH MEMORY MODULE User s Manual BVM part number 454 61400 A 14 MEM480 Memory Module User s Guide MEM480 16 32 48Mbytes DRA...

Страница 72: ...till present and can be used for this function although the strategy needs to be slightly different The 68040 s Transparent Translation Registers contain an address and mask field to allow definition...

Страница 73: ...the processor may not know that data in it s internal caches is now invalid This problem can be approached in a number ways 1 Normally main system memory resides on the BVME4000 and the 68040 can use...

Страница 74: ...for this function although the strategy needs to be slightly different The 68060 s Transparent Translation Registers contain an address and mask field to allow definition of an address range to be us...

Страница 75: ...em memory resides on the BVME6000 and the 68060 can use bus snooping to monitor accesses to the memory by any of the other bus masters The bus snooping must be enabled by programming the relevant bus...

Страница 76: ...27 GND Ground 27 D26 28 A4 28 MERR Module Error 28 D27 29 A3 29 N C No Connect 29 D28 30 A2 30 GND Ground 30 D29 31 A1 31 5VSB 5V Standby Power 31 D30 32 A0 32 12V 12 Volt Power 32 D31 NOTES This all...

Страница 77: ...MEM 21 D0 D1 22 D2 D3 23 D4 D5 24 D6 D7 25 D8 D9 26 D10 D11 27 D12 D13 28 D14 D15 29 A3 A4 30 A1 A2 31 ACKA ACKB 32 GND GND NOTES This allows connection to a BVM IP Expansion Daughter Board e g EXP100...

Страница 78: ...ME6000 25 C 50 C 70 C 50MHz MC68EC LC060 No Heatsink No Airflow No Heatsink No Airflow No Heatsink 0 5m s Airflow 66MHz MC68EC LC060 No Heatsink No Airflow No Heatsink 0 5m s Airflow No Heatsink 1 0m...

Страница 79: ...t Diagrams NOTE Circuit diagrams are provided here for customer reference only This information was current at the time this User Manual was last revised This information is not necessarily current or...

Страница 80: ...erface Takes CPUCLK1 SCSI scsi sch This sheet contains SCSI Interface Takes CPUCLK1 Industry Pack Interface ip sch This sheet contains Industry Pack Interface IP Connectors EXP100 Connector Takes CPUC...

Страница 81: ...27 C1 A26 E2 A25 F3 A24 D1 A23 G3 A22 E1 A21 F1 A20 G1 A19 J2 A18 H1 A17 J1 A16 K2 A15 K1 A14 L1 A13 M1 A12 N1 A11 N3 A10 P1 A9 F16 A8 E18 A7 F18 A6 G16 A5 G18 A4 H18 A3 J18 A2 J17 A1 K18 A0 L18 D31 D...

Страница 82: ...51 D28 50 D27 48 D26 47 D25 46 D24 43 D23 42 D22 41 D21 40 D20 39 D19 38 D18 37 D17 36 D16 35 D15 32 D14 31 D13 30 D12 29 D11 28 D10 27 D9 26 D8 25 D7 21 D6 20 D5 19 D4 18 D3 17 D2 16 D1 15 D0 14 TXD...

Страница 83: ...D7 76 D6 77 D5 78 D4 80 D3 81 D2 83 D1 84 D0 85 SD0 131 SD1 130 SD2 129 SD3 127 SD4 126 SD5 125 SD6 124 SD7 122 SDP 121 SATN 120 SBSY 119 SACK 117 SRST 116 SMSG 115 SSEL 114 SCD 112 SREQ 111 SIO 110 S...

Страница 84: ...T 26 IPDS1 57 IPDS0 87 MEMSELA 7 IOSELA 11 IDSELA 10 INTSELA 25 MEMSELB 9 IOSELB 5 IDSELB 12 INTSELB 20 ACKA 49 ACKDA 47 ACKB 46 ACKDB 45 IPENC2 6 IPENC1 19 IPENC0 22 IPD32 48 TA 74 TIP 43 TCK 28 TMS...

Страница 85: ...A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GBA 19 GAB 1 B1 18 B2 17 B3 16 B4 15 B5 14 B6 13 B7 12 B8 11 IC54 74F623 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GBA 19 GAB 1 B1 18 B2 17 B3 16 B4 15 B5 14 B6 13 B7...

Страница 86: ...RINT SERCS SERRD SERWR IPL2 IPL1 IPL0 AVEC VMEA3 VMEA2 VMEA1 VMEAM2 VMEAM1 VMEAM0 VMEDS0 VMEIAK VIAKIN VIAKOUT TIMACK PARACK TIMINT PARINT D6 D5 D4 D3 D2 D1 D0 VMEMST VMESLV A2 A1 TT1 TT0 IPENC2 IPENC...

Страница 87: ...1 12 5 MHz or 16 67MHz Vcc R45 4K7 Vcc R46 4K7 VRSTOUT CLK_X_2 CPUCLK CPUCLK1 CPUCLK2 CPUCLK3 CLKEN R56 330R R57 270K R58 47R R59 47R C71 0 1u C72 0 1u C73 10u VCC GND VCC 1 2 C62 470u GND GND GND D11...

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