Motorola MVME712AM Installation Guide download pdf (Page 20)

Board Level Hardware Description

1-4 Installation Guide

❏ 1 megabyte of Flash memory

❏ Six status LEDs (FAIL, RUN, SCON, LAN, SCSI, and VME)

❏ 8 kilobytes of Static Random Access Memory (SRAM) and Time of Day

(TOD) clock with Battery Backup RAM (BBRAM)

❏ Two push-button switches (ABORT and RESET)

❏ 128 or 256 kilobytes of BOOT ROM

❏ Six 32-bit tick timers for periodic interrupts

❏ Watchdog timer

❏ Eight software interrupts

❏ I/O

– SCSI Bus interface with Direct Memory Access (DMA)

– Four serial ports with EIA-232-D buffers

– Centronics printer port

– Ethernet transceiver interface

❏ VMEbus interface

– VMEbus system controller functions

– VMEbus interface to local peripheral bus (A24/A32, D8/D16/D32

BLT (D8/D16/D32/D64))(BLT = Block Transfer)

– Local peripheral bus to VMEbus interface (A24/A32, D8/D16/D32

BLT (D16/D32/D64))

– VMEbus interrupter

– VMEbus interrupt handler

– Global CSR for inter-processor communications

– DMA for fast local memory - VMEbus transfers (A16/A24/A32,

D16/D32 BLT (D16/D32/D64))

Specifications

The specifications for the MVME197DP/SP are listed in the following table.

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Motorola MVME712AM Installation Guide Page 20