Functional description, General description, Functional description -2 – Motorola MVME1X7P User Manual

Page 200: General description -2, Figure 3-1. pccchip2 block diagram -2

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PCCchip2

Functional Description

The following sections provide an overview of the functions provided by
the PCCchip2. A detailed programming model for the PCCchip2 control
and status registers is provided in a later section.

General Description

The PCCchip2 interfaces the MC68040 microprocessor bus to the local
peripherals on the Single-Board Computers including: battery-backed
RAM, Serial Communications Controller (CL-CD2401), LAN controller
(82596CA), and SCSI controller (NCR53C710). The PCCchip2 also
provides two 32-bit timers and a parallel I/O port. The block diagram of
the PCCchip2 is shown as Figure 3-1.

Figure 3-1. PCCchip2 Block Diagram

BBRAM

PARALLEL

I/O PORT

CD2401

SCC

TICK

TIMER 1

TICK

TIMER 2

INTERRUPT

HANDLER

BBRAM

I/F

PRINTER

PORT

I/F

CD2401

SERIAL

I/F

MISC.

MAP

DECODER

bd065 9209

SCSI

MEMC040

LANC

MC68040

BUS

I/F

040