參數(shù)資料
型號: IBM21P100BGB
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA304
封裝: 31 X 31 MM, HEAT SINK, PLASTIC, BGA-304
文件頁數(shù): 55/140頁
文件大小: 2032K
代理商: IBM21P100BGB
IBM21P100BGB
IBM 133 PCI-X Bridge R1.1
ppb11_operations.fm.03
July 9, 2001
Bus Operation
Page 13 of 131
3. Bus Operation
This chapter presents a summary of the PCI and PCI-X transactions, transaction forwarding across the IBM
133 PCI-X Bridge R1.1, and transaction termination.
3.1 Types of Transactions
name of each PCI and PCI-X transaction, respectively. For each transaction type, the middle two columns
indicate whether the IBM 133 PCI-X Bridge R1.1 can initiate the transaction as a master on the primary bus
and on the secondary bus; the last two columns indicate whether the bridge responds to the transaction as a
target, on the primary bus and on the secondary bus.
Table 1: PCI Transactions
Command
Code
Type of Transaction
Initiates as Master
Responds as Target
Primary
Secondary
Primary
Secondary
0000
Interrupt Acknowledge
No
0001
Special Cycle
Yes
No
0010
I/O Read
Yes
0011
I/O Write
Yes
0100
Reserved
No
0101
Reserved
No
0110
Memory Read
Yes
0111
Memory Write
Yes
1000
Reserved
No
1001
Reserved
No
1010
Configuration Read
No
Yes
No
1011
Configuration Write
Type 1
Yes
Type 1
1100
Memory Read Multiple
Yes
1101
Dual Address Cycle
Yes
1110
Memory Read Line
Yes
1111
Memory Write and Invalidate
Yes
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