Pericom Semiconductor BIT FUNCTION TYPE DESCRIPTION 31:0 Messa" />
參數(shù)資料
型號: PI7C9X7952AFDE
廠商: Pericom
文件頁數(shù): 24/68頁
文件大小: 0K
描述: IC PCIE-TO-UART BRIDGE 128LQFP
標準包裝: 90
應用: PCIe至UART橋接
接口: 高級配置電源接口(ACPI)
電源電壓: 1.8V, 3.3V
封裝/外殼: 128-LQFP 裸露焊盤
供應商設備封裝: 128-LQFP(14x14)
包裝: 托盤
安裝類型: 表面貼裝
PI7C9X7952
PCI Express Dual UART
Datasheet
Page 30 of 68
May 2013 – Revision 1.4
Pericom Semiconductor
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.
6.2.27.
MESSAGE DATA REGISTER – OFFSET 98h
BIT
FUNCTION
TYPE
DESCRIPTION
15:0
Message Data
RW
Reset to 0000h.
6.2.28. VPD CAPABILITY ID REGISTER – OFFSET 9Ch
BIT
FUNCTION
TYPE
DESCRIPTION
7:0
Enhanced
Capabilities ID
RO
Read as 03h to indicate that these are VPD enhanced capability
registers.
6.2.29. NEXT ITEM POINTER REGISTER – OFFSET 9Ch
BIT
FUNCTION
TYPE
DESCRIPTION
15:8
Next Item Pointer
RO
The pointer points to the VPD capability register (A4h).
Reset to A4h
6.2.30. VPD REGISTER – OFFSET 9Ch
BIT
FUNCTION
TYPE
DESCRIPTION
16
VPD Start
RW
Starts VPD read or write cycle. Assert by software and is
de-asserted by hardware.
Reset to 0b.
17
VPD Operation
RW
0b: Performs VPD read command to VPD table at the location as
specified in VPD address
1b: Performs VPD write command to VPD table at the location
as specified in VPD address
Reset to 0b.
22:18
VPD Address
RW
Contains DWORD address that is used to generate read or write
cycle to the VPD table stored in EEPROM.
Reset to 00000b.
31:23
Reserved
RO
Read as 000h.
6.2.31. VPD DATA REGISTER – OFFSET A0h
BIT
FUNCTION
TYPE
DESCRIPTION
31:0
VPD Data
RW
When read, it returns the last data read from VPD table at the
location as specified in VPD Address.
When writes, it places the current data into VPD table at the location
as specified in VPD Address.
Reset to 00000000h.
6.2.32. VENDOR SPECIFIC CAPABILITY ID REGISTER – OFFSET A4h
BIT
FUNCTION
TYPE
DESCRIPTION
7:0
Enhanced
Capabilities ID
RO
Read as 09h to indicate that these are Vendor Specific capability
registers.
13-0092
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