1

General Information

One parallel port

A 16/A24/A32/D8/D16/D32/D64 VMEbus master/slave interface

128KB of static RAM (with optional battery backup), and VMEbus system controller.

The I/O on the MVME177 is connected to the VMEbus P2 connector. The main board is connected through a P2 transition board and cables to the transition boards. The MVME177 supports the following transition boards:

MVME712-12

MVME712-13

MVME712M

MVME712A

MVME712AM

MVME712B

(referred to in this manual as MVME712x, unless separately specified).

The MVME712x transition boards provide configuration headers and industry standard connectors for the I/O devices.

The VMEbus interface is provided by an ASIC called the

VMEchip2. The VMEchip2 includes:

Two tick timers

A watchdog timer

Programmable map decoders for the master and slave interfaces

VMEbus to/from local bus DMA controller

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

1-6

Page 18
Image 18
Motorola MVME177 manual MVME712AM