beautypg.com

Cache line size, Cache, Line size – Avago Technologies LSI53C1030 User Manual

Page 93: Class code, Revision id, Register: 0x08, Register: 0x0c

background image

PCI Configuration Space Register Description

4-7

Version 2.2

Copyright © 2001, 2002, 2003 by LSI Logic Corporation. All rights reserved.

Register: 0x08

Revision ID
Read/Write

Revision ID

[7:0]

This register indicates the current revision level of the
device.

Register: 0x09–0x0B

Class Code
Read Only

Class Code

[23:0]

This 24-bit register identifies the generic function of the
device. The upper byte of this register is a base class
code, the middle byte is a subclass code, and the lower
byte identifies a specific register-level programming inter-
face. The value of this register is 0x010000, which iden-
tifies a SCSI controller.

Register: 0x0C

Cache Line Size
Read/Write

Cache Line Size

[7:3]

This register specifies the system cache line size in units
of 32-bit words. In the conventional PCI mode, the
LSI53C1030 PCI function uses this register to determine
whether to use Write and Invalidate or Write commands

7

0

Revision ID

X

X

X

X

X

X

X

X

23

0

Class Code

0

0

0

0

0

0

0

1

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

7

3

2

0

Cache Line Size

0

0

0

0

0

0

0

0