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Cache line size, Cache line, Size – Avago Technologies LSI53C895A User Manual

Page 115: Class code, Revision id (rev id), 0x08, 0x0c, Register: 0x08, Register: 0x0c

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PCI Configuration Registers

4-7

Register: 0x08

Revision ID (Rev ID)
Read Only

RID

Revision ID

[7:0]

This register contains the current revision level of the
device.

Registers: 0x09–0x0B

Class Code
Read Only

CC

Class Code

[23:0]

This 24-bit register is used to identify 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
interface. The value of this register is 0x010000, which
identifies a SCSI controller.

Register: 0x0C

Cache Line Size
Read/Write

CLS

Cache Line Size

[7:0]

This register specifies the system cache line size in units
of 32-bit words. The value in this register is used by the
device to determine whether to use Write and Invalidate
or Write commands for performing write cycles, and

7

0

RID

x

x

x

x

x

x

x

x

23

0

CC

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

0

CLS

0

0

0

0

0

0

0

0