Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
Subsystem Vendor ID (SVID) – Offset 2c
This register should be implemented for any function that could be
instantiated more than once in a given system, for example, a system
with 2 audio subsystems, one down on the motherboard and the other
plugged into a PCI expansion slot, should have the SVID register
implemented. The SVID register, in combination with the Subsystem
ID register, enables the operating environment to distinguish one
audio subsystem from the other(s).
Software (BIOS) will write the value to this register. After that,
the value can be read, but writes to the register will have no effect.
The write to this register should be combined with the write to the
SID to create one 32-bit write.
This register is not affected by D3HOT to D0 reset or FLR
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:0 | 0000h | RW/L | SVID (SVID) These RW bits have no functionality. Locked when FNCFG.BCLD = 1. |