Motorola manual MVME162 Embedded Controller Installation Guide

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Board Level Hardware Description

NOTES:

1.For a complete description of the register bits, refer to the MVME162 Embedded Controller Programmer’s Reference Guide or to the data sheet for the specific chip.

2.The SCC is an 8-bit device located on an MCchip private data bus. Byte access is required.

3.Writes to the LCSR in the VMEchip2 must be 32 bits. LCSR writes of 8 or 16 bits terminate with a TEA signal. Writes to the GCSR may be 8, 16 or 32 bits. Reads to the LCSR and GCSR may be 8, 16 or 32 bits. Byte reads should be used to read the interrupt vector.

4.This area does not return an acknowledge signal. If the local bus timer is enabled, the access times out and is terminated by a TEA signal.

5.Size is approximate.

6.Port commands to the 82596CA must be written as two 16-bit writes: upper word first and lower word second.

7.Refer to the Flash and PROM Interface section in the MCchip description in the MVME162 Embedded Controller Programmer’s Reference Guide.

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