beautypg.com

2 pci bus interface signals, 1 system signals, Table 3.2 system signals – Avago Technologies LSI53C896 User Manual

Page 93: Pci bus interface signals, System signals, Table 3.2, Section 3.2, “pci bus interface signals

background image

PCI Bus Interface Signals

3-5

Version 3.3

Copyright © 1998–2003 by LSI Logic Corporation. All rights reserved.

3.2 PCI Bus Interface Signals

The PCI Bus Interface Signals section contains tables describing the
signals for the following signal groups:

System Signals

;

Address and Data Signals

;

Interface Control Signals

;

Arbitration Signals

;

Error Reporting Signals

;

Interrupt Signals

;

SCSI Function A GPIO Signals

; and

SCSI Function B GPIO Signals

.

3.2.1 System Signals

Table 3.2

describes the signals for the System Signals group.

Table 3.2

System Signals

Name

Bump

Type

Strength

Description

CLK

H3

I

N/A

Clock provides timing for all transactions on the PCI bus and
is an input to every PCI device. All other PCI signals are
sampled on the rising edge of CLK, and other timing
parameters are defined with respect to this edge. Clock can
optionally serve as the SCSI core clock, but this may effect fast
SCSI-2 (or faster) transfer rates.

RST/

G1

I

N/A

Reset forces the PCI sequencer of each device to a known
state. All T/S and S/T/S signals are forced to a high impedance
state, and all internal logic is reset. The RST/ input is
synchronized internally to the rising edge of CLK. The CLK input
must be active while RST/ is active to properly reset the device.