参数资料
型号: PI7C8150BNDIE
厂商: Pericom
文件页数: 90/109页
文件大小: 0K
描述: IC PCI-PCI BRIDGE ASYNC 256-PBGA
标准包装: 90
系列: *
应用: *
接口: *
电源电压: *
封装/外壳: 256-BGA
供应商设备封装: 256-PBGA(17x17)
包装: 管件
安装类型: 表面贴装
PI7C8150B
ASYNCHRONOUS 2-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 81 of 109
April 2009 – Revision 1.08
14.1.15
I/O LIMIT REGISTER – OFFSET 1Ch
Bit
Function
Type
Description
11:8
32-bit Indicator
R/O
Read as 01h to indicate 32-bit I/O addressing
15:12
I/O Base Address
[15:12]
R/W
Defines the top address of the I/O address range for the bridge to
determine when to forward I/O transactions from one interface to
the other. The upper 4 bits correspond to address bits [15:12] and
are writable. The lower 12 bits corresponding to address bits [11:0]
are assumed to be FFFh. The upper 16 bits corresponding to
address bits [31:16] are defined in the I/O base address upper 16 bits
address register
Reset to 0
14.1.16
SECONDARY STATUS REGISTER – OFFSET 1Ch
Bit
Function
Type
Description
20:16
Reserved
R/O
Reset to 0
21
66MHz Capable
R/O
Set to 1 to enable 66MHz operation on the secondary interface
Reset to 1
22
Reserved
R/O
Reset to 0
23
Fast Back-to-
Back Capable
R/O
Set to 1 to enable decoding of fast back-to-back transactions on the
secondary interface to different targets
Reset to 0
24
Master Data
Parity Error
Detected
R/WC
Set to 1 when S_PERR_L is asserted and bit 6 of command register
is set
Reset to 0
26:25
DEVSEL_L
timing
R/O
DEVSEL# timing (medium decoding)
00: fast DEVSEL_L decoding
01: medium DEVSEL_L decoding
10: slow DEVSEL_L decoding
11: reserved
Reset to 01
27
Signaled Target
Abort
R/WC
Set to 1 (by a target device) whenever a target abort cycle occurs on
its secondary interface
Reset to 0
28
Received Target
Abort
R/WC
Set to 1 (by a master device) whenever transactions on its secondary
interface are terminated with target abort
Reset to 0
29
Received Master
Abort
R/WC
Set to 1 (by a master) when transactions on its secondary interface
are terminated with Master Abort
Reset to 0
30
Received System
Error
R/WC
Set to 1 when S_SERR_L is asserted
Reset to 0
31
Detected Parity
Error
R/WC
Set to 1 when address or data parity error is detected on the
secondary interface
Reset to 0
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