Motorola MVME2401-1, Installation And Use Manual, Page: 49 / 178

3-1
3
3 Functional Description
Introduction
This chapter describes the MVME240x VME processor module on a block
diagram level. The General Description provides an overview of the
MVME240x, followed by a detailed description of several blocks of
circuitry. Figure 3-1 shows a block diagram of the overall board
architecture.
Detailed descriptions of other MVME240x blocks, including
programmable registers in the ASICs and peripheral chips, can be found in
the MVME2400-Series VME Processor Module Programmer’s Reference
Guide (part number V2400A/PG). Refer to it for a functional description
of the MVME240x in greater depth.
Features
The following table summarizes the features of the MVME240x VME
processor module.
Table 3-1. MVME240x Features
Feature Description
Microprocessor
233 MHZ MPC750 PowerPC
TM
processor
(MVME2401 - 2402 models)
350 MHZ MPC750 PowerPC
TM
processor
(MVME2431 - 2434 models)
Form factor 6U VMEbus
SDRAM
Double-Bit-Error detect, Single-Bit-Error correct across 72 bits 32MB,
64MB, or 128MB SDRAM
L2 Cache
Build-option for 1MB back side L2 Cache using late write or burst-
mode SRAMS