Texas Instruments XIO2213B Evaluation Module / Reference Design XIO2213BEVM XIO2213BEVM Datenbogen
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XIO2213BEVM
SCPS210F – OCTOBER 2008 – REVISED MAY 2013
8.7
Configuration ROM Header Register
The configuration ROM header register externally maps to the first quadlet of the 1394 configuration ROM,
offset FFFF F000 0400h. See
offset FFFF F000 0400h. See
for a complete description of the register contents.
OHCI register offset:
18h
Register type:
Read/Write
Default value:
0000 XXXXh
BIT NUMBER
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RESET STATE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
BIT NUMBER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET STATE
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Table 8-6. Configuration ROM Header Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
31-24
info_length
RW
Information length. IEEE Std 1394 bus-management field. Must be valid when bit 17
(linkEnable) in the host controller control register at OHCI offset 50h/54h (see
(linkEnable) in the host controller control register at OHCI offset 50h/54h (see
is set to 1b. The default value for this field is 0h.
23-16
crc_length
RW
CRC length. IEEE Std 1394 bus-management field. Must be valid when bit 17 (linkEnable) in
the host controller control register at OHCI offset 50h/54h (see
the host controller control register at OHCI offset 50h/54h (see
) is set to 1b.
The default value for this field is 0h.
15-0
rom_crc_value
RW
ROM CRC value. IEEE Std 1394 bus-management field. Must be valid at any time bit 17
(linkEnable) in the host controller control register at OHCI offset 50h/54h (see
(linkEnable) in the host controller control register at OHCI offset 50h/54h (see
is set to 1b.
8.8
Bus Identification Register
The bus identification register externally maps to the first quadlet in the Bus_Info_Block and contains the
constant 3133 3934h, which is the ASCII value of 1394.
constant 3133 3934h, which is the ASCII value of 1394.
OHCI register offset:
1Ch
Register type:
Read only
Default value:
3133 3934h
BIT NUMBER
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
RESET STATE
0
0
1
1
0
0
0
1
0
0
1
1
0
0
1
1
BIT NUMBER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET STATE
0
0
1
1
1
0
0
1
0
0
1
1
0
1
0
0
138
1394 OHCI Memory-Mapped Register Space
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