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參數(shù)資料
| 型號： | PI7C8140AMAE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 74/82頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PCI-PCI BRIDGE 2PORT 128-QFP |
| 標(biāo)準(zhǔn)包裝： | 39 |
| 系列： | * |
| 應(yīng)用： | * |
| 接口： | * |
| 電源電壓： | * |
| 封裝/外殼： | 128-BFQFP |
| 供應(yīng)商設(shè)備封裝： | 128-QFP（14x20） |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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PI7C8140A
2-PORT PCI-TO-PCI BRIDGE
Page 76 of 82
March 20, 2007 – Revision 1.01
Bit
Function
Type
Description
9
Enable Long
Request
RW
Controls bridge’s ability to enable long requests for lock cycles
0: normal lock operation
1: enable long request for lock cycle
Reset to 0
10
Enable
Secondary To
Hold Request
Longer
RW
Control’s bridge’s ability to enable the secondary bus to hold requests longer.
0: internal secondary master will release REQ# after FRAME# assertion
1: internal secondary master will hold REQ# until there is no transactions pending
in FIFO or until terminated by target
Reset to 1
11
Enable Primary
To Hold
Request Longer
RW
Control’s bridge’s ability to hold requests longer at the Primary Port.
0: internal Primary master will release REQ# after FRAME# assertion
1: internal Primary master will hold REQ# until there is no transactions pending
in FIFO or until terminated by target
Reset to 1
15:12
Reserved
RO
Reserved. Returns 0 when read. Reset to 0.
13.2.40 CAPABILITY ID REGISTER – OFFSET 80h
Bit
Type
Description
Function
7:0
Enhanced
Capabilities ID
RO
Read as 01h to indicate that these are power management enhanced capability
registers.
13.2.41 NEXT ITEM POINTER REGISTER – OFFSET 80h
Bit
Function
Type
Description
15:8
Next Item
Pointer
RO
Read as 90h. No other ECP registers.
13.2.42 POWER MANAGEMENT CAPABILITIES REGISTER – OFFSET 80h
Bit
Function
Type
Description
18:16
Power
Management
Revision
RO
Read as 010 to indicate the device is compliant to Revision 1.1 of PCI Power
Management Interface Specifications.
19
PME# Clock
RO
Read as 0 to indicate bridge does not support the PME# pin.
20
Auxiliary
Power
RO
Read as 0 to indicate bridge does not support the PME# pin or an auxiliary power
source.
21
Device Specific
Initialization
RO
Read as 0 to indicate bridge does not have device specific initialization
requirements.
24:22
Reserved
RO
Read as 0
25
D1 Power State
Support
RO
Read as 1 to indicate bridge supports the D1 power management state.
26
D2 Power State
Support
RO
Read as 1 to indicate bridge supports the D2 power management state.
31:27
PME# Support
RO
Read as 0 to indicate bridge does not support the PME# pin.
07-0067
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