Host Controller Data Manual

4–4
4.1 OHCI Version Register
This register indicates the OHCI version support, and whether or not the serial ROM is present. See Table 4–2 for
a complete description of the register contents.
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name OHCI version
Type R R R R R R R R R R R R R R R R
Default 0 0 0 0 0 0 0 X 0 0 0 0 0 0 0 1
Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Name OHCI version
Type R R R R R R R R R R R R R R R R
Default 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Register: OHCI version
Type: Read-only
Offset: 00h
Default: 0X01 0000h
Table 4–2. OHCI Version Register Description
BIT FIELD NAME TYPE DESCRIPTION
31–25 RSVD R Reserved. Bits 31–25 return 0s when read.
24 GUID_ROM R
The TSB12LV26 sets this bit if the serial ROM is detected. If the serial ROM is present, then the
Bus_Info_Block is automatically loaded on hardware reset.
23–16 version R
Major version of the OHCI. The TSB12LV26 is compliant with the 1394 Open Host Controller Interface
Specification
; thus, this field reads 01h.
15–8 RSVD R Reserved. Bits 15–8 return 0s when read.
7–0 revision R
Minor version of the OHCI. The TSB12LV26 is compliant with the 1394 Open Host Controller Interface
Specification
; thus, this field reads 00h.