參數(shù)資料
型號: PI7C8150AMAE
廠商: Pericom
文件頁數(shù): 92/111頁
文件大?。?/td> 0K
描述: IC PCI-PCI BRIDGE 2PORT 208-FQFP
標準包裝: 24
系列: *
應用: *
接口: *
電源電壓: *
封裝/外殼: 208-BFQFP
供應商設備封裝: 208-FQFP(28x28)
包裝: 管件
安裝類型: 表面貼裝
PI7C8150A
2-PORT PCI-TO-PCI BRIDGE
Page 81 of 111
APRIL 2006 – Revision 1.1
14.1.9
HEADER TYPE REGISTER – OFFSET 0Ch
Bit
Function
Type
Description
23:16
Header Type
R/O
Read as 01h to indicate that the register layout conforms to the
standard PCI-to-PCI bridge layout.
14.1.10
PRIMARY BUS NUMBER REGISTSER – 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 BUS NUMBER REGISTER – OFFSET 18h
Bit
Function
Type
Description
15:8
Secondary Bus
Number
R/W
Indicates the number of the PCI bus to which the secondary
interface is connected. The value is set in software during
configuration.
Reset to 0
14.1.12
SUBORDINATE BUS NUMBER REGISTER – OFFSET 18h
Bit
Function
Type
Description
23:16
Subordinate 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
14.1.13
SECONDARY LATENCY TIMER REGISTER – OFFSET 18h
Bit
Function
Type
Description
31:24
Secondary
Latency Timer
R/W
Designated in units of PCI bus clocks. Latency timer checks for
master accesses on the secondary bus interfaces that remain
unclaimed by any target.
Reset to 0
14.1.14
I/O BASE REGISTER – OFFSET 1Ch
Bit
Function
Type
Description
3:0
32-bit Indicator
R/O
Read as 01h to indicate 32-bit I/O addressing
06-0057
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