DEVICE SPECIFICATION
S5933
PCI CONTROLLER
4.2 DEVICE IDENTIFICATION REGISTER (DID)
Register Name:
Address Offset:
Power-up value:
Device Identification
02h-03h
The DID register contains the vendor-assigned de-
vice identification number. This number is generated
by AMCC in compliance with the conditions of the
PCI specification. Write operations from the PCI in-
terface have no effect on this register. After reset is
removed, this field can be boot-loaded from the ex-
ternal non-volatile device (if present and valid) so that
other legitimate PCI SIG members can substitute
their own device identification number for this field.
Sections 7.2 and 7.3 detail the optional boot-load op-
eration.
4750h (ASCII hex for ‘GP’,
General Purpose)
Boot-load:
External nvRAM offset
042h-43h
Attribute:
Size:
Read Only
16 bits
Figure 4-2. Device Identification Register
0
15
4750h
Device Identification Register (RO)
Table 4-3. Device Identification Register
Bit
Description
15:0
Device Identification Number: This is a 16-bit value initially assigned by AMCC for applications
using the AMCC Vendor ID.
Applied Micro Circuits Corporation
4-5
6195 Lusk Blvd., San Diego, CA 92121 • (619) 450-9333
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
