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.