Intel® 400 Series Chipset On-Package Platform Controller Hub
Online Register Database
ID | Date | Version | Classification |
---|---|---|---|
615146 | 08/09/2019 | 1.2 | Public |
Subsystem ID (SID) – Offset 2e
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. The SID register, in combination
with the Subsystem Vendor ID register make it possible for 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
SVID 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 | SID (SID) These RW bits have no functionality. Locked when FNCFG.BCLD = 1. |