Block diagram bus interface unit – AMD Am79C930 User Manual

Page 4

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4 Am79C930

P R E L I M I N A R Y

BLOCK DIAGRAM

Bus Interface Unit

A14–0 or

LA23–17, SA16–0

D7–0

CLKIN

Slave

Control

PCMCIA

and ISA
Memory

and I/O

Address Buffer

Data Buffer

SIR0

System

Interrupt

Generator

SIR1

...

SIR7

ISA Memory Base

ISA I/O Base

MD[7:0] MA[16:0]

80188

Interrupt

Generator

IREQ

PCMCIA

Config Registers

ALE

CA16

Latch

Bus

Multi-

plexer

CAD7–0

CA15–8

MIR0
MIR1

...

MIR15

MOE

MWE

UCS

LCS

SRDY

XCE

FCE

TAICE

SCE

INT1

RESET

PCMCIA

or

ISA Control Signals

Plug and Play

Control Module

Slave

Control

and

Arbitration

for

Memory

Interface

Bus

20183B-2