L-FW323-06-DB AGERE [Agere Systems], L-FW323-06-DB Datasheet - Page 31

• Manufacturer Part Number: L-FW323-06-DB
• Description: PCI PHY/Link Open Host Controller Interface
• Manufacturer: AGERE [Agere Systems]

Data Sheet, Rev. 1
December 2005
Internal Registers
PCI Subsystem Identification Register
The PCI Subsystem Identification register is used to uniquely identify the card or system in which the FW323
resides. If a serial EEPROM is present, these values are loaded from the EEPROM during the powerup sequence.
Subsystem vendor IDs can be obtained from the PCI SIG. Values for the subsystem ID are vendor specific.
By default, the PCI Subsystem ID and PCI Subsystem Vendor ID registers are read only. However, if a serial
EEPROM is not interfaced to the FW323 06, bit 0 (SubSystemWriteEn) of the PCI Config register, offset 4Ch can
be set to enable writes to the PCI Subsystem ID and PCI Subsystem Vendor ID so that these registers can be
customized to the correct ID values. After the IDs have been written, the SubSystemWriteEn bit should be reset to
protect the data from being overwritten.
Offset:
Default:
Type:
Reference:
Table 11. PCI Subsystem Identification Register Description
PCI Power Management Capabilities Pointer Register
The PCI Power Management Capabilities Pointer register provides a pointer into the PCI configuration header
where the PCI Power Management register block resides. The FW323 configuration words at offsets 44h and 48h
provide the Power Management registers. This register is read only and returns 44h when read.
Offset:
Default:
Type:
Reference:
Agere Systems Inc.
31:16
15:0
Bit
2Ch
0000 0000h
Read/write
PCI Local Bus Specification, Rev. 2.2, Section 6.2.4
PCI Local Bus Specification, Rev. 2.2, Section 6.2.4 and 6.7 and 1394 Open Host Controller
Interface Specification, Rev. 1.1, Section A.3.6.
Field Name
34h
44h
Read only
SSVID
SSID
(continued)
Type
RU
RU
Subsystem ID. This field indicates the subsystem ID.
Subsystem Vendor ID. This field indicates the subsystem vendor ID.
PCI PHY/Link Open Host Controller Interface
Description
FW323 06 1394a
31