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Table 2.1 pci/pci-x bus commands and encodings, Pci/pci-x bus commands and encodings, Table 2.1 – Avago Technologies LSI53C1030 User Manual

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2-10

Functional Description

Version 2.2

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

The following sections describe how the LSI53C1030 implements these
commands.

2.3.2.1 Interrupt Acknowledge Command

The LSI53C1030 ignores this command as a slave and never generates
it as a master.

Table 2.1

PCI/PCI-X Bus Commands and Encodings

1

1. The LSI53C1030 ignores reserved commands as a slave and never generates them as a master.

C_BE[3:0]/

PCI Command

PCI-X Command

Supports

as Master

Supports

as Slave

0b0000

Interrupt Acknowledge

Interrupt Acknowledge

No

No

0b0001

Special Cycle

Special Cycle

No

No

0b0010

I/O Read

I/O Read

Yes

Yes

0b0011

I/O Write

I/O Write

Yes

Yes

0b0100

Reserved

Reserved

N/A

N/A

0b0101

Reserved

Reserved

N/A

N/A

0b0110

Memory Read

Memory Read Dword

Yes

Yes

0b0111

Memory Write

Memory Write

Yes

Yes

0b1000

Reserved

Alias to
Memory Read Block

PCI: N/A

PCI-X: No

PCI: N/A

PCI-X: Yes

0b1001

Reserved

Alias to
Memory Write Block

PCI: N/A

PCI-X: No

PCI: N/A

PCI-X: Yes

0b1010

Configuration Read

Configuration Read

No

Yes

0b1011

Configuration Write

Configuration Write

No

Yes

0b1100

Memory Read Multiple

Split Completion

Yes

Yes

2

2. When acting as a slave in the PCI mode, the LSI53C1030 supports this command as the PCI

Memory Read command.

0b1101

Dual Address Cycle

Dual Address Cycle

Yes

Yes

0b1110

Memory Read Line

Memory Read Block

Yes

Yes

2

0b1111

Memory Write and Invalidate

Memory Write Block

Yes

Yes

3

3. When acting as a slave in the PCI mode, the LSI53C1030 supports this command as the PCI

Memory Write command.