Revision 1.02 – April 12, 2007
S5920 – PCI Product: PCI Configuration Registers
Data Book
This register is used to further identify the add-in board
or subsystem. It provides a mechanism for add-in card
vendors to distinguish devices with the same Vendor
ID and Device ID. Implementation of this register is
mandatory for 2.2 compliance and an all-zero value
indicates that the device does not support subsystem
identification. Subsystem ID is vendor-specific. It is
loaded by the S5920 from the external nvRAM at
power up.
SUBSYSTEM ID REGISTER (SID)
Subsystem Identification
Register Name:
2Eh-2Fh
Address Offset:
Power-up value:
Boot-load:
Attribute:
0000h
External nvRAM offset 6Eh-6Fh
Read Only (RO)
16 bit
Size:
Figure 20. Subsystem Identification Register
15
0
0000h
Subsystem Identification Register (RO)
Bit
Description
15:0
Subsystem Identification Number.
AMCC Confidential and Proprietary
DS1596
64
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
