參數(shù)資料
型號(hào)： PI7C7300DNAE
廠商： Pericom
文件頁(yè)數(shù)： 78/107頁(yè)
文件大小： 0K
描述： IC PCI-PCI BRIDGE 3PORT 272-BGA
標(biāo)準(zhǔn)包裝： 40
系列： *
應(yīng)用： *
接口： *
電源電壓： *
封裝/外殼： 272-BBGA
供應(yīng)商設(shè)備封裝： 272-PBGA（27x27）
包裝： 管件
安裝類型： 表面貼裝
PI7C7300D
3-PORT PCI-TO-PCI BRIDGE
Page 72 of 107
Pericom Semiconductor
November 2005 - Revision 1.01
When S1_RESET# or S2_RESET# is asserted by means of the secondary reset bit,
PI7C7300D remains accessible during secondary interface reset and continues to respond
to accesses to its configuration space from the primary interface.
13
SUPPORTED COMMANDS
The PCI command set is given below for the primary and secondary interfaces.
13.1
PRIMARY INTERFACE
P_CBE [3:0] #
Command
Action
0000
Interrupt
Acknowledge
Ignore
0001
Special Cycle
Do not claim. Ignore.
0010
I/O Read
1.
If address is within pass through I/O range, claim and
pass through.
2.
Otherwise, do not pass through and do not claim for
internal access.
0011
I/O Write
Same as I/O Read.
0100
Reserved
-----
0101
Reserved
-----
0110
Memory Read
1.
If address is within pass through memory range, claim
and pass through.
2.
If address is within pass through memory mapped I/O
range, claim and pass through.
3.
Otherwise, do not pass through and do not claim for
internal access.
0111
Memory Write
Same as Memory Read.
1000
Reserved
-----
1001
Reserved
-----
1010
Configuration Read
I.
Type 0 Configuration Read:
If the bridge’s IDSEL line is asserted, perform function
decode and claim if target function is implemented.
Otherwise, ignore. If claimed, permit access to target
function’s configuration registers. Do not pass through
under any circumstances.
II. Type 1 Configuration Read:
1.
If the target bus is the bridge’s secondary bus: claim
and pass through as a Type 0 Configuration Read.
2.
If the target bus is a subordinate bus that exists behind
the bridge (but not equal to the secondary bus): claim
and pass through as a Type 1 Configuration Read.
3.
Otherwise, ignore.
1011
Configuration Write
I.
Type 0 Configuration Write: same as Configuration
Read.
II. Type 1 Configuration Write (not special cycle
request):
1.
If the target bus is the bridge’s secondary bus: claim
and pass through as a Type 0 Configuration Write
2.
If the target bus is a subordinate bus that exists behind
the bridge (but not equal to the secondary bus): claim
and pass through unchanged as a Type 1 Configuration
Write.
3.
Otherwise, ignore.
III. Configuration Write as Special Cycle Request
(device = 1Fh, function = 7h)
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