5-2
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Functional Description
5
Processor and Memory
The MVME167P is based on the MC68040 microprocessor. The boards
are built with 16MB, 32MB or 64MB synchronous DRAM (SDRAM).
Various versions of the MVME167P may have the SDRAM configured to
model 4MB, 8MB, 16MB, 32MB or 64 MB of ECC-protected DRAM.
Status LEDs
Eight LEDs: Board Fail (FAIL), CPU Status (STAT), CPU Activity
(RUN), System Controller (SCON), LAN Activity (LAN), LAN Power
(+12V), SCSI Activity (SCSI), VME Activity (VME)
Timers
Four 32-bit tick timers and watchdog timer in Petra ASIC
Two 32-bit tick timers and watchdog timer in VMEchip2 ASIC
Interrupts
Eight software interrupts (including those in the VMEchip2 ASIC)
VME I/O
VMEbus P2 connector
Serial I/O
Four EIA-232-D DTE configurable serial ports via VMEbus P2 connector
and transition module
Parallel I/O
Centronics-compatible bidirectional parallel port via VMEbus P2
connector and transition module
Ethernet I/O
Ethernet transceiver interface via DB15 connector on transition module
SCSI I/O
SCSI interface with DMA via LCP2 adapter board
VMEbus interface
VMEbus system controller functions
VMEbus-to-local-bus interface (A24/A32, D8/D16/D32/block transfer
[D8/D16/D32/D64])
Local-bus-to-VMEbus interface (A16/A24/A32, D8/D16/D32)
VMEbus interrupter
VMEbus interrupt handler
Global Control/Status Register (GCSR) for interprocessor communications
DMA for fast local memory/VMEbus transfers (A16/A24/A32,
D16/D32/D64)
Feature
Description