參數(shù)資料
型號: PI7C7300NA
廠商: PERICOM SEMICONDUCTOR CORP
元件分類: 總線控制器
英文描述: PCI BUS CONTROLLER, PBGA272
封裝: PLASTIC, BGA-272
文件頁數(shù): 94/119頁
文件大?。?/td> 880K
代理商: PI7C7300NA
PI7C7300
3-PORT PCI-to-PCI BRIDGE
Advanced Information
66
06/04/02 Revision 1.07
14.1.8
Primary Latency Timer Register – Offset 0Ch
Bit
Function
Type
Description
15:8
Primary
Latency timer
R/W
This register sets the value for the Master Latency Timer
which starts counting when the master asserts FRAME#.
Reset to 0
14.1.9
Header Type Register – Offset 0Ch
Configuration Register 1
Bit
Function
Type
Description
23:16
Header Type
R/O
Read as 81h to designate function 0 (multiple function PCI-
to-PCI bridge for secondary bus S1)
Configuration Register 2
Bit
Function
Type
Description
23:16
Header Type
R/O
Read as 01h to designate function 1 (single function PCI-to-
PCI bridge for secondary bus S2)
14.1.10
Primary Bus Number Register – Offset 18h
Bit
Function
Type
Description
7:0
Primary Bus
Number
R/W
Indicates the number of the PCI bus to which the primary
interface is connected. The value is set in software during
configuration.
Reset to 0
14.1.11
Secondary (S1 or S2) Bus Number Register – Offset 18h
Bit
Function
Type
Description
15:8
Secondary (S1
or S2) Bus
Number
R/W
Indicates the number of the PCI bus to which the secondary
interface (S1 or S2) is connected. The value is set in
software during configuration.
Reset to 0
14.1.12
Subordinate (S1 or S2) Bus Number Register – Offset 18h
Bit
Function
Type
Description
23:16
Subordinate
(S1 or S2) Bus
Number
R/W
Indicates the number of the PCI bus with the highest number
that is subordinate to the bridge. The value is set in software
during configuration.
Reset to 0
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