Motorola MVME187 manual VMEchip2 ASIC, 2. Bus Transfers, PCCchip2 ASIC

Board Level Overview

VMEchip2 ASIC

Provides the VMEbus interface. The VMEchip2 includes:

❏Two tick timers

❏Watchdog timer

❏Programmable map decoders for the master and slave interfaces, and a VMEbus to/from local bus DMA controller

❏VMEbus to/from local bus non-DMA programmed access interface

❏VMEbus interrupter

❏VMEbus system controller

❏VMEbus interrupt handler

❏VMEbus requester

Table 2-2. Bus Transfers

Transfer type	Can be...
Processor-to-VMEbus	D8, D16, or D32
VMEchip2 DMA to the	D16, D32, D16/BLT,
VMEbus	D32/BLT, or D64/MBLT

PCCchip2 ASIC

The PCCchip2 ASIC provides two tick timers and the interface to the:

❏LAN chip

❏SCSI chip

❏Serial port chip

❏Printer port

❏BBRAM

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