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參數(shù)資料
| 型號： | PI7C21P100 |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 2-PORT PCI-X BRIDGE |
| 中文描述： | 2端口PCI - X橋接 |
| 文件頁數(shù)： | 50/77頁 |
| 文件大小： | 603K |
| 代理商： | PI7C21P100 |
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PI7C21P100
2-PORT PCI-X BRIDGE
ADVANCE INFORMATION
Page 50 of 77
June 10, 2005 Revision 1.06
BIT
16
FUNCTION
Parity Error Response
Enable
TYPE
RW
DESCRIPTION
Parity Error Response Enable
0:
Ignore address and data parity errors on the secondary interface.
1:
Enable parity error detection on the secondary interface.
8.1.34
PRIMARY DATA BUFFERING CONTROL REGISTER – OFFSET 40h
BIT
FUNCTION
TYPE
DESCRIPTION
15
RESERVED
RO
Reserved
. Returns 0h when read.
14:12
Maximum Memory
Read Byte Count
000:
512 bytes (default)
001:
128 bytes
010:
256 bytes
011:
512 bytes
100:
1024 bytes
101:
2048 bytes
110:
4096 bytes
111:
512 bytes
Maximum byte count is used by PI7C21P100 when generating read
requests on the secondary interface in response to a memory read
operation initiated on the primary interface which is in PCI mode and
bits[9:8], bits[7:6], or bits[5:4] are set to full prefetch.
Reset to 000
11
Enable Relaxed
Ordering
0:
Relaxed ordering is disabled in conventional PCI mode.
1:
At the primary interface, read completions that occur after the first
read completion are allowed to bypass posted writes and complete
with a higher priority in conventional PCI mode.
In PCI-X mode, the relaxed ordering bit in the attribute field will
take precedence. Reset to 0
10
Primary Special
Delayed Read Mode
Enable
command code changes.
1:
Allows any primary master to change memory command code
(MR, MRL, MRM) after it has received a retry. PI7C21P100 will
complete the memory read transaction and return data back to the
primary bus master if the address and byte enables are the same.
This bit is ignored in PCI-X mode. Reset to 0
9:8
Primary Read Prefetch
Mode
00:
One cache line prefetch if memory read address is in the
prefetchable range at the primary interface
01:
Reserved
10:
Full prefetch if memory read address is in the prefetchable range
at the primary interface.
11:
Disconnect on the first DWORD.
These bits are ignored in PCI-X mode. Reset to 00
7:6
Primary Read Line
Prefetch Mode
00:
One cache line prefetch if memory read line address is in
prefetchable range at the primary interace
01:
Reserved
10:
Full prefetch if memory read multiple address is in prefetchable
range at the primary interface
11:
Reserved.
These bits are ignored if the primary interface is in PCI-X mode.
5:4
Primary Read Multiple
Prefetch Mode
00:
One cache line prefetch if memory read multiple address is in
prefetchable range at the primary interface.
01:
Reserved.
10:
Full prefetch if memory read multiple address is in prefetchable
range at the primary interface.
11:
Reserved.
These bits are ignored if the primary interface is in PCI-X mode.
Reset to 10.
3:0
RESERVED
RO
Reserved.
Returns 0000 when read.
RW
Maximum Memory Read Byte Count
RW
Relaxed Ordering Enable
RW
Primary Special Delayed Read Mode Enable
0:
Retry any primary master which repeats its transaction with
RW
Primary Read Prefetch Mode
RW
Primary Read Line Prefetch Mode
RW
Primary Read Multiple Prefetch Mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI7C21P100NH | 2-PORT PCI-X BRIDGE |
| PI7C7100BNA | PCI Bus Interface/Controller |
| PI7C7100 | 3-Port PCI Bridge |
| PI7C7100CNA | 3-Port PCI Bridge |
| PI7C7300 | 3-PORT PCI-to-PCI BRIDGE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C21P100B | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-PORT PCI-X TO PCI-X BRIDGE |
| PI7C21P100BEVB | 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 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| PI7C21P100BNH | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2-PORT PCI-X TO PCI-X BRIDGE |
| PI7C21P100BNHE | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI PCI-X to PCI-XBridge 2 Port 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 |
| PI7C21P100EVB | 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 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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