12 configuration rom mapping register, 13 posted write address low register – Texas Instruments Dual/Single Socket CardBus and UntraMedia Controller PCI7621 User Manual
Page 191
8−11
8.12 Configuration ROM Mapping Register
The configuration ROM mapping register contains the start address within system memory that maps to the start
address of 1394 configuration ROM for this node. See Table 8−8 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
Configuration ROM mapping
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Configuration ROM mapping
Type
RW
RW
RW
RW
RW
RW
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:
Configuration ROM mapping
Offset:
34h
Type:
Read/Write
Default:
0000 0000h
Table 8−8. Configuration ROM Mapping Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
31−10
configROMaddr
RW
If a quadlet read request to 1394 offset FFFF F000 0400h through offset FFFF F000 07FFh is
received, then the low-order 10 bits of the offset are added to this register to determine the host memory
address of the read request.
9−0
RSVD
R
Reserved. Bits 9−0 return 0s when read.
8.13 Posted Write Address Low Register
The posted write address low register communicates error information if a write request is posted and an error occurs
while the posted data packet is being written. See Table 8−9 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
Posted write address low
Type
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
Default
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
Posted write address low
Type
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
RU
Default
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Register:
Posted write address low
Offset:
38h
Type:
Read/Update
Default:
XXXX XXXXh
Table 8−9. Posted Write Address Low Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
31−0
offsetLo
RU
The lower 32 bits of the 1394 destination offset of the write request that failed.