Technical data

4-1
4
4Functional Description
Introduction
This chapter describes the MVME172LX VME embedded controller on a
block diagram level. The Description of Features provides an overview of
the MVME172LX, 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 MVME172LX blocks, including
programmable registers in the ASICs and peripheral chips, can be found in
the MVME172 Embedded Controller Programmer’s Reference Guide
(part number VME172A/PG). Refer to it for a functional description of the
MVME172LX in greater depth.
Summary of Features
The following table summarizes the features of the MVME172LX VME
embedded controller.
Table 4-1. MVME172LX Features
Feature Description
Microprocessor 60MHz MC68060 or 64MHZ MC68LC060 processor
Form factor 6U VMEbus
Memory
4/8/16/32/64MB interleaved, ECC-protected DRAM or 4/8/16MB parity-
protected DRAM
128KB SRAM with battery backup
Flash memory One Intel 28F016SA 2MB 8-bit Flash device
EPROMs
Two 32-pin JEDEC DIP PROM sockets with 256Kb/512Kb/1MB x8
selectable densities
Real-time clock
8KB NVRAM with RTC, battery backup, and watchdog function (SGS-
Thomson M48T58)