DP8390D datasheet(4/56 Pages) NSC

tên linh kiện	DP8390D

Giải thích chi tiết về linh kiện	NIC Network Interface Controller

PDF	56 Pages

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nhà sản xuất	NSC [National Semiconductor (TI)]

Trang chủ	http://www.national.com

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4 / 56 page

Connection Diagrams

Plastic Chip Carrier

TLF8582 – 5

Dual-In-Line Package

TLF8582 – 4

Order Number DP8390DN or DP8390DV

See NS Package Number N48A or V68A

50 Pin Descriptions

BUS INTERFACE PINS

Symbol

DIP Pin No

Function

Description

AD0 – AD15

1 – 12

IOZ

MULTIPLEXED ADDRESSDATA BUS

14–17

AD0 – AD7 are used to readwrite register data AD8 – AD15 float during IO

transfers SRD SWR pins are used to select direction of transfer

Bus Master with BACK input asserted

During t1 of memory cycle AD0 – AD15 contain address

During t2 t3 t4 AD0 – AD15 contain data (word transfer mode)

During t2 t3 t4 AD0 – AD7 contain data AD8 – AD15 contain address

(byte transfer mode)

Direction of transfer is indicated by NIC on MWR MRD lines

ADS0

IOZ

ADDRESS STROBE 0

Input with DMA inactive and CS low latches RA0–RA3 inputs on falling edge

If high data present on RA0–RA3 will flow through latch

Output when Bus Master latches address bits (A0–A15) to external memory

during DMA transfers

DP8390D bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI)