Intel® 800 Series Chipset Family Platform Controller Hub (PCH), Volume 2
ID | Date | Version | Classification |
---|---|---|---|
834576 | 10/10/2024 | 001 | Public |
Subsystem Identifier (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 / sensing 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.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
15:0 | 0h | RO/V | Subsystem ID (SID) Subsystem ID that is used to uniquely identify the add-in card or subsystem where the PCIdevice resides. |