Functional Description; Introduction; Mvme167 Functional Description; Data Bus Structure - Motorola MVME167-32 User Manual

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This chapter provides a block diagram level description for the MVME167 module.

The functional description provides an overview of the module, followed by a detailed

description of several blocks of the module. The block diagram of the MVME167 is

shown in Figure 4-1. MVME167 Main Module Block Diagram on page 4-10. The block

diagram of the parity DRAM mezzanine module of the MVME167 is shown as Figure

4-2. Parity DRAM Mezzanine Module Block Diagram on page 4-11. The block

diagram of the ECC DRAM mezzanine module of the MVME167 is shown as Figure

4-2. Parity DRAM Mezzanine Module Block Diagram on page 4-11.

Descriptions of the other blocks of the MVME167, including programmable registers

in the ASICs and peripheral chips, are given in the MVME166/MVME167/MVME187

Single Board Computers Programmer's Reference Guide. Refer to it for the rest of the

functional description of the MVME167 module.

The MVME167 is a high functionality VMEbus single board computer designed

around the MC68040 chip. It has 4/8/16/32/64/128/256MB of dynamic RAM, a SCSI

mass storage interface, four serial ports, a printer port, and an Ethernet transceiver

interface.

The local data bus on the MVME167 is a 32-bit synchronous bus that is based on the

MC68040 bus, and supports burst transfers and snooping. The various local bus master

and slave devices use the local bus to communicate. The local bus is arbitrated by

priority type arbiter and the priority of the local bus masters from highest to lowest is:

82596CA LAN, CD2401 serial (through the PCCchip2), 53C710 SCSI, VMEbus, and

MPU. In the general case, any master can access any slave; however, not all

combinations pass the common sense test. Refer to the

MVME166/MVME167/MVME187 Single Board Computers Programmer's Reference

Guide and to the user's guide for each device to determine its port size, data bus

connection, and any restrictions that apply when accessing the device.

MVME167/D34-1

FUNCTIONAL

DESCRIPTION

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