參數(shù)資料
型號(hào)： PI7C7300NA
廠商： PERICOM SEMICONDUCTOR CORP
元件分類： 總線控制器
英文描述： PCI BUS CONTROLLER, PBGA272
封裝： PLASTIC, BGA-272
文件頁數(shù)： 88/119頁
文件大?。?/td> 880K
代理商： PI7C7300NA
PI7C7300
3-PORT PCI-to-PCI BRIDGE
Advanced Information
60
06/04/02 Revision 1.07
13.1
Primary Interface (continued)
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)
1.
If the target bus is the bridges secondary bus:
claim and pass through as a special cycle.
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
1100
Memory Read
Multiple
Same as Memory Read
1101
Dual Address
Cycle
Supported
1110
Memory Read Line
Same as Memory Read
1111
Memory Write and
Invalidate
Same as Memory Read
13.2
Secondary Interface
S1_CBE [3:0] #
S2_CBE [3:0] #
Command
Action
0000
Interrupt
Acknowledge
Ignore
0001
Special Cycle
Do not claim. Ignore.
0010
I/O Read
Same as Primary Interface
0011
I/O Write
Same as I/O Read.
0100
Reserved
-----
0101
Reserved
-----
0110
Memory Read
Same as Primary Interface
0111
Memory Write
Same as Memory Read.
1000
Reserved
-----
1001
Reserved
-----
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