参数资料
型号: PI7C7300DNAE
厂商: Pericom
文件页数: 94/107页
文件大小: 0K
描述: IC PCI-PCI BRIDGE 3PORT 272-BGA
标准包装: 40
系列: *
应用: *
接口: *
电源电压: *
封装/外壳: 272-BBGA
供应商设备封装: 272-PBGA(27x27)
包装: 管件
安装类型: 表面贴装
PI7C7300D
3-PORT PCI-TO-PCI BRIDGE
Page 87 of 107
Pericom Semiconductor
November 2005 - Revision 1.01
Bit
Function
Type
Description
30:28
Secondary Bus
Master
Preemption
Control
R/W
Sets the number of clocks for time-to-preempt after another master
request.
000: 32 clocks
001: 8 clocks
010: 16 clocks
011: 64 clocks
100: 128 clocks
Reset to 000
31
Preemption
R/W
Sets preemption.
0: preemption ON
1: preemption OFF
Reset to 0
14.1.31
UPSTREAM (S1 or S2 to P) MEMORY BASE REGISTER –
OFFSET 50h
Bit
Function
Type
Description
3:0
64 bit addressing
R/O
0: 32 bit addressing
1: 64 bit addressing
Reset to 1
15:4
Upstream
Memory Base
Address
R/W
Controls upstream memory base address.
Reset to 00000000h
14.1.32
UPSTREAM (S1 or S2 to P) MEMORY LIMIT REGISTER –
OFFSET 50h
Bit
Function
Type
Description
19:16
64 bit addressing
R/O
0: 32 bit addressing
1: 64 bit addressing
Reset to 1
31:20
Upstream
Memory Limit
Address
R/W
Controls upstream memory limit address.
Reset to 000FFFFFh
14.1.33
UPSTREAM (S1 or S2 to P) MEMORY BASE UPPER 32-BITS
REGISTER – OFFSET 54h
Bit
Function
Type
Description
31:0
Upstream
Memory Base
Address
R/W
Defines bits [63:32] of the upstream memory base
Reset to 0
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