參數(shù)資料
型號(hào)： PI7C7300
廠商： Pericom Semiconductor Corp.
英文描述： 3-PORT PCI-to-PCI BRIDGE
中文描述： 3端口PCI至PCI橋
文件頁(yè)數(shù)： 21/109頁(yè)
文件大?。?/td> 779K
代理商： PI7C7300
PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 21 OF 109
09/25/03 Revision 1.09
Pin #
Y17
Y19
Name
P_AD[11]
P_AD[5]
Type
PB
PB
Pin #
Y18
Y20
Name
P_AD[8]
P_AD[2]
Type
PB
PB
4
PCI BUS OPERATION
This Chapter offers information about PCI transactions, transaction forwarding across
PI7C7300A, and transaction termination. The PI7C7300A has three 128-byte buffers for
buffering of upstream and downstream transactions. These hold addresses, data,
commands, and byte enables and are used for both read and write transactions.
4.1
TYPES OF TRANSACTIONS
This section provides a summary of PCI transactions performed by PI7C7300A.
Table 4-1 lists the command code and name of each PCI transaction. The Master and
Target columns indicate support for each transaction when PI7C7300A initiates
transactions as a master, on the primary (P) and secondary (S1, S2) buses, and when
PI7C7300A responds to transactions as a target, on the primary (P) and secondary (S1,
S2) buses.
Table 4-1 PCI TRANSACTIONS
Types of Transactions
0000
Interrupt Acknowledge
0001
Special Cycle
0010
I/O Read
0011
I/O Write
0100
Reserved
0101
Reserved
0110
Memory Read
0111
Memory Write
1000
Reserved
1001
Reserved
1010
Configuration Read
1011
Configuration Write
1100
Memory Read Multiple
1101
Dual Address Cycle
1110
Memory Read Line
1111
Memory Write and Invalidate
As indicated in Table 4-1, the following PCI commands are not supported by
PI7C7300A:
!
PI7C7300A never initiates a PCI transaction with a reserved command code and, as
a target, PI7C7300A ignores reserved command codes.
!
PI7C7300A does not generate interrupt acknowledge transactions. PI7C7300A
ignores interrupt acknowledge transactions as a target.
!
PI7C7300A does not respond to special cycle transactions. PI7C7300A cannot
guarantee delivery of a special cycle transaction to downstream buses because of the
Initiates as Master
Primary
N
Y
Y
Y
N
N
Y
Y
N
N
N
Y (Type 1 only)
Y
Y
Y
Y
Responds as Target
Primary
N
N
Y
Y
N
N
Y
Y
N
N
Y
Y
Y
Y
Y
Y
Secondary
N
Y
Y
Y
N
N
Y
Y
N
N
Y
Y
Y
Y
Y
Y
Secondary
N
N
Y
Y
N
N
Y
Y
N
N
N
Y (Type 1 only)
Y
Y
Y
Y
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PI7C7300A 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3-PORT PCI-to-PCI BRIDGE
PI7C7300AEVB-3 功能描述:界面開發(fā)工具 3 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
PI7C7300ANA 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 272-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 272-Pin BGA
PI7C7300ANAE 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 3 Port PCI Bridge RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
PI7C7300ANA-E 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 272-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 272-Pin BGA
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