user manual

General Information
1-6
1
❏
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 MVME712
x , unless separately
specified).
The MVME712
x 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