Z53C80 查看數據表（PDF） - Zilog

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产品描述 (功能)

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Z53C80

SMALL COMPUTER SYSTEM INTERFACE (SCSI)

Zilog 

ZILOG

/DB7-/DB0,

/DBP /ACK /ATN /BSY /MSG I//O C//D /REQ /RST /SEL

Z53C80 SCSI

/IOR

/IOW

/CS

/RESET

A2-A0

D7-D0

CPU BUS

Interface

Interface

Control

Logic

DMA

Logic

48 mA SCSI Transceivers

Data

Input

Register

Data

Output

Register

Interrupt

Logic

Control

Registers

Figure 2a. SCSI Block Diagram

D7-D0

A2-A0

/IOR

/IOW

/CS

/RESET

/DACK

/EOP

DRQ

READY

IRQ

GND

Z53C80

SCSI

/DB7-/DB0, /DBP

/ACK

/ATN

/BSY

/MSG

I//O

C//D

/REQ

/RST

/SEL

VCC

Figure 2b. SCSI Pin Functions

PS97SCC0200

3

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