Motorola IH5 manual MCPN750A Features, Feature Description

Functional Description

6

Introduction

This chapter describes the MCPN750A single-board computer on a block diagram level. The General Description provides an overview of the MCPN750A, followed by a detailed description of several blocks of circuitry. Figure 6-1shows a block diagram of the overall board architecture.

Detailed descriptions of other MCPN750A blocks, including programmable registers in the ASICs and peripheral chips, can be found in the MCPN750A CompactPCI Single Board Computer Programmer’s Reference Guide (MCPN750A/PG). Refer to it also for additional functional description information.

Features

The following table summarizes the features of the MCPN750A single- board computers.

	Table 6-1. MCPN750A Features
Feature	Description
Microprocessor	MPC750 PowerPC processor
ECC DRAM	16MB-256MB of memory through onboard DRAM devices
L2 cache memory	Populated with 1MB on base board
Flash Memory	Two 32-pin PLCC sockets (1MB 16-bit Flash); four soldered devices
	(4MB 64-bit Flash)
Real-time clock	8KB NVRAM with RTC and battery backup (SGS-Thomson
	M48T559)
Switches	ABORT/RESET as switch S1 on front panel
Status LEDs	three: BFL, CPU, and HOT SWAP STATUS
Watchdog timers	Provided in SGS-Thomson M48T559 and Raven ASIC

6-1