3-1
3
3
Functional Description
Introduction
This chapter describes the MCP750 single-board computer on a block
diagram level. The
General Description
section provides an overview of
the MCP750, followed by a detailed description of several blocks of
circuitry.
Figure 3-1
shows a block diagram of the board’s architecture.
Detailed descriptions of other MCP750 blocks, including programmable
registers in the ASICs and peripheral chips, can be found in the
Programmer’s Reference Guide (MCP750A/PG). You may also refer to
this guide for a more detailed functional description of the MCP750.
Features
The following table summarizes the features of the MCP750 single-board
computers.
Table 3-1. MCP750 Features
Feature
Description
Microprocessor
MPC750 PowerPC processor (233 MHz, 366 MHz, or 450MHz)
ECC DRAM
16MB-256MB on RAM300 module
L2 cache memory
Populated with 1MB on base board
Flash Memory
Two 32-pin PLCC sockets (1MB 16-bit Flash) on base board; two banks
(4MB or 8MB 64-bit Flash) on RAM300 module
Real-time clock
8KB NVRAM with RTC and battery backup (SGS-Thomson
M48T559)
Switches
RESET
and
ABORT
Status LEDs
four:
BFL
,
CPU
,
PCI
,
and
CPCI
Tick timers
Three programmable 16-bit timers
Watchdog timer
Provided in SGS-Thomson M48T559 or Raven 3
