W83C554F datasheet(13/156 Pages) WINBOND

tên linh kiện	W83C554F

Giải thích chi tiết về linh kiện	SYSTEM I/O CONTROLLER WITH PCI ARBITER & UltraDMA/33 IDE Controller

PDF	156 Pages

Scroll/Zoom	100%

nhà sản xuất	WINBOND [Winbond]

Trang chủ	http://www.winbond.com

Logo

13 / 156 page

W83C554F

Pin Descriptions

WINBOND ELECTRONICS CORP. AMERICA

2.2

Pin Descriptions

This section describes the location and function of each pin on the W83C554F. Note the following conventions used in the

tables:

•

Where more than one pin is listed for a signal, the first pin number corresponds to the most significant

bit of the bus. For example, the Bus Command and Byte Enables bits 3 to 0 (C/BE[3:0]#) use pins 1,

12, 22, and 31.

•

The "#" symbol at the end of a signal name => active state (or asserted state) occurs when the signal is

at a low voltage level.

•

Some pins, when pulled high or pulled low with an external resistor (also called strap), will change the

behavior of the chip. These pins are typed with bold font.

Buffer type

Description

input only signal

output only signal

I/O

bi-directional, input/output signal

open drain

I/OD

input/open drain output is a standard input buffer with open drain output

VDD

indicates that the pin should be connected to a +5V power supply

VSS

indicates that the pin should be connected to the ground plane.

W83C554F bảng dữ liệu(PDF) 13 Page - Winbond