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參數(shù)資料
| 型號： | PERICOMPI7C8150 |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 2-Port PCI-to-PCI Bridge |
| 中文描述： | 2端口PCI至PCI橋 |
| 文件頁數(shù)： | 79/106頁 |
| 文件大小： | 904K |
| 代理商： | PERICOMPI7C8150 |
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PI7C8150
2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
69
August 22, 2002 – Revision 1.02
3:0
64-bit addressing
R/O
Indicates 64-bit addressing
0000: 32-bit addressing
0001: 64-bit addressing
Reset to 1
Defines the bottom address of an address range for the bridge to
determine when to forward memory read and write transactions from
one interface to the other. The upper 12 bits correspond to address
bits [31:20] and are writable. The lower 20 bits are assumed to be 0.
15:4
Prefetchable
Memory Base
Address [31:20]
R/W
14.1.20
PREFETCHABLE MEMORY LIMIT REGISTER – OFFSET 24h
Bit
19:16
Function
64-bit addressing
Type
R/O
Description
Indicates 64-bit addressing
0000: 32-bit addressing
0001: 64-bit addressing
Reset to 1
Defines the top address of an address range for the bridge to
determine when to forward memory read and write transactions from
one interface to the other. The upper 12 bits correspond to address
bits [31:20] and are writable. The lower 20 bits are assumed to be
FFFFFh.
31:20
Prefetchable
Memory Limit
Address [31:20]
R/W
14.1.21
PREFETCHABLE MEMORY BASE ADDRESS UPPER 32-BITS
REGISTER – OFFSET 28h
Bit
31:0
Function
Prefetchable
Memory Base
Address, Upper
32-bits [63:32]
Type
R/W
Description
Defines the upper 32-bits of a 64-bit bottom address of an address
range for the bridge to determine when to forward memory read and
write transactions from one interface to the other.
Reset to 0
14.1.22
PREFETCHABLE MEMORY LIMIT ADDRESS UPPER 32-BITS
REGISTER – OFFSET 2Ch
Bit
31:0
Function
Prefetchable
Memory Limit
Address, Upper
32-bits [63:32]
Type
R/W
Description
Defines the upper 32-bits of a 64-bit top address of an address range
for the bridge to determine when to forward memory read and write
transactions from one interface to the other.
Reset to 0
14.1.23
I/O BASE ADDRESS UPPER 16-BITS REGISTER – OFFSET 30h
Bit
Function
Type
Description
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