P R E L I M I N A R Y

BLOCK DIAGRAM

Bus Interface Unit

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

IREQ

A14–0 or

LA23–17, SA16–0

D7–0

PCMCIA

or

ISA Control Signals

CLKIN

System

 

 

Interrupt

 

CA16

Generator

Latch

ALE

 

Address Buffer

Bus

CA15–8

 

 

Data Buffer

Multi-

CAD7–0

 

plexer

 

SIR0

MIR0

 

MIR1

 

SIR1

 

...

 

...

 

MIR15

 

SIR7

 

 

 

Slave

 

MOE

Control

Slave

MWE

PCMCIA

and ISA

Control

UCS

Memory

and

 

and I/O

Arbitration

LCS

 

 

for

SRDY

PCMCIA

Memory

 

Config Registers

Interface

XCE

 

Bus

FCE

Plug and Play

 

 

 

Control Module

 

TAICE

ISA Memory Base

80188

SCE

Interrupt

INT1

ISA I/O Base

Generator

 

 

 

RESET

20183B-2

4

Am79C930

Page 4
Image 4
AMD Am79C930 manual Ireq, SIR0 MIR0 MIR1 SIR1 MIR15 SIR7, Srdy, INT1