參數(shù)資料
型號: PI7C8150B-33
英文描述: PCI Bridge | Asynchronous 2-Port PCI Bridge
中文描述: PCI橋|異步2端口PCI橋
文件頁數(shù): 83/115頁
文件大?。?/td> 879K
代理商: PI7C8150B-33
PI7C8150B
2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 83 of 115
July 31, 2003 – Revision 1.031
Bit
Function
Type
Description
Controls the ability to perform address / data stepping
0: disable address/data stepping (affects primary and secondary)
1: enable address/data stepping (affects primary and secondary)
Reset to 0
Controls the enable for the P_SERR_L pin
0: disable the P_SERR_L driver
1: enable the P_SERR_L driver
Reset to 0
Controls 7C8150’s ability to generate fast back-to-back transactions
to different devices on the primary interface.
0: no fast back-to-back transactions
1: enable fast back-to-back transactions
Reset to 0
Returns 000000 when read
7
Wait Cycle
Control
R/O
8
P_SERR_L
enable
R/W
9
Fast Back-to-
Back Enable
R/W
15:10
Reserved
R/O
14.1.4
STATUS REGISTER – OFFSET 04h
Bit
19:16
20
Function
Reserved
Capabilities List
Type
R/O
R/O
Description
Reset to 0
Set to 1 to enable support for the capability list (offset 34h is the
pointer to the data structure)
Reset to 1
Set to 1 to enable 66MHz operation on the primary interface
Reset to 1
Reset to 0
Set to 1 to enable decoding of fast back-to-back transactions on the
primary interface to different targets
Reset to 1
Set to 1 when P_PERR_L is asserted and bit 6 of command register
is set
Reset to 0
DEVSEL_L timing (medium decoding)
00: fast DEVSEL_L decoding
01: medium DEVSEL_L decoding
10: slow DEVSEL_L decoding
11: reserved
Reset to 01
Set to 1 (by a target device) whenever a target abort cycle occurs
Reset to 0
Set to 1 (by a master device) whenever transactions are terminated
with target aborts
Reset to 0
Set to 1 (by a master) when transactions are terminated with Master
Abort
Reset to 0
21
66MHz Capable
R/O
22
23
Reserved
Fast Back-to-
Back Capable
R/O
R/O
24
Data Parity Error
Detected
R/WC
26:25
DEVSEL_L
timing
R/O
27
Signaled Target
Abort
R/WC
28
Received Target
Abort
R/WC
29
Received Master
Abort
R/WC
相關(guān)PDF資料
PDF描述
PI7C8152B PCI Bridge | Asynchronous 2-Port PCI Bridge
PI7C8154 PCI Bridge | 2-Port PCI-to-PCI Bridge
PI7C8154-33 PCI Bridge | 2-Port PCI-to-PCI Bridge
PI7C8150 PCI Bridge | 2-Port PCI-to-PCI Bridge
PI7C8150-33 PCI Bridge | 2-Port PCI-to-PCI Bridge
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