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13−14
13.23 Subsystem ID Alias Register
The contents of the subsystem access register are aliased to the subsystem vendor ID and subsystem ID registers
at PCI offsets 2Ch and 2Eh, respectively. See Table 13−14 for a complete description of the register contents.
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name Subsystem ID alias
Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW
Default 1 0 0 0 0 0 0 0 0 0 1 1 0 1 0 1
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name Subsystem ID alias
Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW
Default 0 0 0 1 0 0 0 0 0 1 0 0 1 1 0 0
Register: Subsystem ID alias
Offset: 50h
Type: Read/Write (EEPROM, GRST
only)
Default: 8035 104Ch
Table 13−14. Subsystem ID Alias Register Description
BIT FIELD NAME TYPE DESCRIPTION
31−16 SubsystemID RW Subsystem device ID. The value written to this field is aliased to the subsystem ID register at
PCI offset 2Eh.
15−0 SubsystemVendorID RW Subsystem vendor ID. The value written to this field is aliased to the subsystem vendor ID
register at PCI offset 2Ch.
13.24 Class Code Alias Register
This register is alias of the class code. Not like original register, this register is read/write and loadable from EEPROM.
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name Class code alias
Type RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW
Default 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name Class code alias
Type RW RW RW RW RW RW RW RW RW RW R R R R R R
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Register: Class code alias
Offset: 54h
Type: Read-only, Read/Write (EEPROM, GRST
only)
Default: 0780 0000h