4-1
4
4
Functional Description
Introduction
This chapter describes the MVME172P4 VME embedded controller on a
block diagram level. The Summary of Features provides an overview of
the MVME172P4, followed by a detailed description of several blocks of
circuitry.
Figure 4-1
shows a block diagram of the overall board
architecture.
Detailed descriptions of other MVME172P4 blocks, including
programmable registers in the ASICs and peripheral chips, can be found in
the MVME1X2P4 VME Embedded Controller Programmer’s Reference
Guide (part number V1X2P4A/PG). Refer to that manual for a functional
description of the MVME172P4 in greater depth.
Summary of Features
The following table summarizes the features of the MVME172P4 VME
embedded controller.
Table 4-1. MVME172P4 Features
Feature
Description
Microprocessor
MVME172P4: 60MHz MC68060 or 64MHZ MC68LC060 processor
Form factor
6U VMEbus
Memory
16MB synchronous DRAM (SDRAM), configurable to emulate
1/4/8/16MB parity-protected DRAM or 4/8/16MB ECC-protected DRAM
512KB SRAM with battery backup
Flash memory
MVME172P4: One Intel 28F160S5 2MB 8-bit Flash device with optional
write protection
EPROM
One 32-pin JEDEC standard PLCC EPROM socket with 512Kb x 8 density
Real-time clock
8KB NVRAM with RTC, battery backup, and watchdog function (SGS-
Thomson M48T58)
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