Datasheet

3−11
3.13 Subsystem ID Registers
The subsystem ID registers are used for system and option card identification purposes. These registers can be
initialized from the serial EEPROM or programmed via the subsystem access register at offset F8h in the PCI
configuration space (see Section 3.25, Subsystem Access Register). See Table 3−12 for a complete description of
register contents.
Type: Read/Update
Offset: 2Ch
Default: 0000 0000h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Table 3−12. Subsystem ID Registers Description
BIT FIELD NAME TYPE DESCRIPTION
31−16 OHCI_SSID RU Subsystem device ID. This field indicates the subsystem device ID.
15−0 OHCI_SSVID RU Subsystem vendor ID. This field indicates the subsystem vendor ID.
3.14 Power Management Capabilities Pointer Register
The power management capabilities pointer register provides a pointer into the PCI configuration header where the
power-management register block resides. The TSB82AA2B configuration header doublewords at offsets 44h and
48h provide the power management registers. This register is read only and returns 44h when read.
Type: Read only
Offset: 34h
Default: 44h
Bit 7 6 5 4 3 2 1 0
Default 0 1 0 0 0 1 0 0