1 ohci version register – Texas Instruments TSB12LV26 User Manual
Page 42
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.