參數(shù)資料
型號(hào): 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): 69/140頁
文件大?。?/td> 2032K
代理商: IBM21P100BGB
IBM21P100BGB
IBM 133 PCI-X Bridge R1.1
Transaction Ordering
Page 26 of 131
ppb11_ordering.fm.03
July 9, 2001
Table 6: IBM 133 PCI-X Bridge R1.1 Ordering Rules in PCI-X Mode
Bus Operation
Can Row Pass Column?
Memory Write
Split Read Request
Split Write Request
Split Read
Completion
Split Write
Completion
Memory Write
no
yes
Split Read Request
no
yes
Split Write Request
no
yes
no
yes
Split Read
Completion
a) no
b) yes1
yes
a) yes
b) no2
yes
Split Write
Completion
no
yes
no
1. If the Relaxed Ordering bit is set in PCI-X-to-PCI-X mode or the Enable Relaxed Ordering bit in the Primary and/or Secondary
Data Buffering Control register in any other mode, Read Completions can pass Memory Writes. See the bit descriptions in
2. Split Read Completions with the same Sequence ID must remain in address order.
Table 7: IBM 133 PCI-X Bridge R1.1 Ordering Rules in PCI Mode
Bus Operation
Can Row Pass Column?
Posted Memory
Write
Delayed Read
Request
Delayed Write
Request
Delayed Read
Completion
Delayed Write
Completion
Posted Memory
Write
no
yes
Delayed Read
Request
no
yes
Delayed Write
Request
no
yes
no
yes
Delayed Read
Completion
a) no
b) yes1
yes
Delayed Write
Completion
no
yes
no
1. If the Relaxed Ordering bit is set in PCI-X-to-PCI-X mode or the Enable Relaxed Ordering bit in the Primary and/or Secondary
Data Buffering Control register in any other mode, Read Completions can pass Memory Writes. See the bit description for details.
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