L-FW323-06-DB AGERE [Agere Systems], L-FW323-06-DB Datasheet - Page 40

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

FW323 06 1394a
PCI PHY/Link Open Host Controller Interface
Internal Registers
OHCI Version Register
This register indicates the OHCI version supported, and whether or not the serial EEPROM is present. To support
backwards compatibility with existing hardware and software, the version and revision fields default to 8’h01 and
8’h00 respectively. These values denote compatibility with version 1.0 of the OHCI specification. However, both the
version and revision fields are programmable via the serial EEPROM. This functionality allows these fields to be
optionally updated to 8’h01 and 8’h10 respectively to indicate compatibility with version 1.1 of the OHCI
specification. Note that if the version and revision fields are programmed with OHCI 1.1 values, then the
LinkOptions register (see FW323 Vendor-Specific Registers on page 72) should also be programmed to properly
enable OHCI 1.1 features within the FW323.
Offset:
Default:
Type:
Reference:
Table 20. OHCI Version Register Description
40
40
31:25
23:16
15:8
Bit
7:0
24
00h
0X01 0000h
1394 Open Host Controller Interface Specification, Rev. 1.1, Section 5.2
Field Name
GUID_ROM
Read/write
Reserved
Reserved
Revision
Version
(continued)
Type
R
R
R
R
R
The FW323 sets this bit if the serial EEPROM is detected.
Reserved.
Major Version of the OHCI. The FW323 is compliant with both
version 1.0 and version 1.1 of the 1394 Open Host Controller Interface
Specification. This field defaults to 01h, but can be reconfigured via
the serial EEPROM.
Reserved.
Minor Version of the OHCI. The FW323 is compliant with both
version 1.0 and version 1.1 of the 1394 Open Host Controller Interface
Specification. This field defaults to 00h, but can be reconfigured via
the serial EEPROM.
Description
Data Sheet, Rev. 1
December 2005
Agere Systems Inc.