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Memory [0] low, Memory [0] high – Avago Technologies LSI53C1020 User Manual

Page 88

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4-10

PCI Host Register Description

Version 2.4

Copyright © 2001–2004 by LSI Logic Corporation. All rights reserved.

Reserved

[1:0]

This field is reserved.

Register: 0x14–0x17

Memory [0] Low
Read/Write

The

Memory [0] Low

register and the

Memory [0] High

register map

SCSI operating registers into Memory Space [0]. This register contains
the lower 32 bits of the Memory Space [0] base address. Hardware
programs bits [9:0] to 0b0000000100, which indicates that the Memory
Space [0] base address is 64 bits wide and that the memory data is not
prefetchable. The LSI53C1020 requires 1024 bytes of memory space.

Memory [0] Low

[31:0]

This field contains the Memory [0] Low address.

Register: 0x18–0x1B

Memory [0] High
Read/Write

The

Memory [0] High

register and the

Memory [0] Low

register map

SCSI operating registers into Memory Space [0]. This register contains
the upper 32 bits of the Memory Space [0] base address. The
LSI53C1020 requires 1024 bytes of memory space.

Memory [0] High

[31:0]

This field contains the Memory [0] High address.

31

0

Memory [0] Low

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

1

0

0

31

0

Memory [0] High

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

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