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Avago Technologies LSI53C1020 User Manual

Page 106

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PCI Host Register Description

Version 2.4

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

Maximum Memory Read Byte Count

[3:2]

These bits indicate the maximum byte count the
LSI53C1020 uses when initiating a sequence with one of
the burst memory read commands. The following table
provides the bit encodings for this field.

Reserved

1

This bit is reserved.

Data Parity Error Recovery Enable

0

The host device driver sets this bit to allow the
LSI53C1020 to attempt to recover from data parity errors.
If the user clears this bit, and the LSI53C1020 is operat-
ing in the PCI-X mode, the LSI53C1020 asserts SERR/
whenever the Master Data Parity Error bit in the PCI

Sta-

tus

register is set.

Bits [6:4]

Encoding

Maximum Outstanding

Split Transactions

0b000

1

0b001

2

0b010

3

0b011

4

0b100

8

0b101

Reserved

0b110

Reserved

0b111

Reserved

Bits [3:2]

Encoding

Maximum Memory Read

Byte Count

0b00

512

0b01

1024

0b10

2048

0b11

Reserved

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