參數(shù)資料
型號: PCI1620PDV
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項-數(shù)據(jù)表參考
文件頁數(shù): 85/164頁
文件大?。?/td> 720K
代理商: PCI1620PDV
4
17
4.30 Subsystem ID Register (Firmware Loader Function)
This register, used for system and option card identification purposes, may be required for certain operating systems.
This register is read-only or read/write, depending on the setting of bit 5 (SUBSYSRW) in the system control register.
When bit 5 is 0, this register is read/write; when bit 5 is 1, this register is read-only. The default mode is read-only.
This register is provided in function 0 to allow it to be easily loaded from the EEPROM or BIOS. In the firmware loader
function, read accesses to the subsystem ID register (PCI offset 2Eh, see Section 7.12) are redirected to this register.
This register can only be changed through function 0 and is read-only in the firmware loader function. All bits in this
register are GRST only bits.
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Subsystem ID (firmware loader function)
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
Subsystem ID (firmware loader function)
6Eh
Read-only (Read/Write when bit 5 in the system control register is 0)
0000h
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