pi7c8154a Pericom Semiconductor Corporation, pi7c8154a Datasheet - Page 83
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pi7c8154a
Manufacturer Part Number
pi7c8154a
Description
2-port Pci-to-pci Bridge
Manufacturer
Pericom Semiconductor Corporation
Datasheet
1.PI7C8154A.pdf
(112 pages)
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14.1.21
14.1.22
14.1.23
14.1.24
14.1.25
PREFETCHABLE MEMORY LIMIT ADDRESS REGISTER – OFFSET
24h
PREFETCHABLE MEMORY BASE ADDRESS UPPER 32-BITS
REGISTER – OFFSET 28h
PREFETCHABLE MEMORY LIMIT ADDRESS UPPER 32-BITS
REGISTER – OFFSET 2Ch
I/O BASE ADDRESS UPPER 16-BITS REGISTER – OFFSET 30h
I/O LIMIT ADDRESS UPPER 16-BITS REGISTER – OFFSET 30h
Bit
19:16
31:20
Bit
31:0
Bit
31:0
Bit
15:0
Bit
31:16
Prefetchable
Function
64-bit addressing
Memory Limit
Address [31:20]
Function
Prefetchable
Memory Base
Address, Upper
32-bits [63:32]
Function
Prefetchable
Memory Limit
Address, Upper
32-bits [63:32]
Function
I/O Base
Address, Upper
16-bits [31:16]
Function
I/O Limit
Address, Upper
16-bits [31:16]
Type
R/O
R/W
Type
R/W
Type
R/W
Type
R/W
Type
R/W
Page 83 of 112
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.
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
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
Description
Defines the upper 16-bits of a 32-bit bottom address of an address range
for the bridge to determine when to forward I/O transactions from one
interface to the other.
Reset to 0
Description
Defines the upper 16-bits of a 32-bit top address of an address range for
the bridge to determine when to forward I/O transactions from one
interface to the other.
Reset to 0
ASYNCHRONOUS 2-PORT
JULY 2004 REVISION 1.00
PCI-to-PCI BRIDGE
Advance Information
PI7C8154A
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