参数资料
型号: PI7C9X20404GPBNBE
厂商: Pericom
文件页数: 36/79页
文件大小: 0K
描述: IC PCIE PACKET SWITCH 148LFBGA
产品变化通告: Product Discontinuation Notice 22/Jan/2010
标准包装: 189
系列: GreenPacket™
应用: 封装开关,4 端口/4 线道
接口: PCI Express
封装/外壳: 148-LFBGA
供应商设备封装: 148-LFBGA(12x12)
包装: 托盘
安装类型: 表面贴装
PI7C9X20404GP
4Port-4Lane PCI Express Switch
GreenPacket
TM Family
Datasheet
Page 41 of 79
June 2009 – Revision 1.6
Pericom Semiconductor
7.2.36
NEXT ITEM POINTER REGISTER – OFFSET 8Ch (Downstream Port Only)
BIT
FUNCTION
TYPE
DESCRIPTION
15:8
Next Item Pointer
RO
Pointer points to the Vendor specific capability register (A4h).
Reset to A4h.
7.2.37
MESSAGE CONTROL REGISTER – OFFSET 8Ch (Downstream Port Only)
BIT
FUNCTION
TYPE
DESCRIPTION
16
MSI Enable
RW
0b: The function is prohibited from using MSI to request service
1b: The function is permitted to use MSI to request service and is prohibited
from using its INTx # pin
Reset to 0b.
19:17
Multiple Message
Capable
RO
Read as 000b.
22:20
Multiple Message
Enable
RW
Reset to 000b.
23
64-bit address
capable
RO
0b: The function is not capable of generating a 64-bit message address
1b: The function is capable of generating a 64-bit message address
Reset to 1b.
31:24
Reserved
RO
Reset to 00h.
7.2.38
MESSAGE ADDRESS REGISTER – OFFSET 90h (Downstream Port Only)
BIT
FUNCTION
TYPE
DESCRIPTION
1:0
Reserved
RO
Reset to 00b.
31:2
Message Address
RW
If the message enable bit is set, the contents of this register specify the
DWORD aligned address for MSI memory write transaction.
Reset to 0.
7.2.39
MESSAGE UPPER ADDRESS REGISTER – OFFSET 94h (Downstream
Port Only)
BIT
FUNCTION
TYPE
DESCRIPTION
31:0
Message Upper
Address
RW
This register is only effective if the device supports a 64-bit message address
is set.
Reset to 00000000h.
7.2.40
MESSAGE DATA REGISTER – OFFSET 98h (Downstream Port Only)
BIT
FUNCTION
TYPE
DESCRIPTION
15:0
Message Data
RW
Reset to 0000h.
7.2.41
VPD CAPABILITY ID REGISTER – OFFSET 9Ch (Upstream Port Only)
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