16
Control
DFW-SX910/X710
With the exception of bits 8 to 15 of the 400h offset
address field, the length of the entire ConfigROM field
is made up of 1Fh Quadlets. So ConfigROM from
400h to 47Fh is 128 bytes.
Offset address 420h and key code 8Dh indicate a
NodeUniqueID Leaf offset, but in 1394a-2000, this
field has been eliminated. To ensure compatibility with
previous models, this field has been retained in this
model, but in writing drivers and software
applications, be sure to ignore this field. For a
NodeUniqueID, use NodeVendorID/ChipID-Hi +
ChipID-Lo in BusInfoBlock.
The offset address of UnitDirectory is required to be
424h +000004h * 4 = 434h
For offset address 434h, the length of the
UnitDirectory is 3 Quadlets. UnitSpecID (00A02Dh)
conforms to 1394TA standards.
UnitSoftwareVersion (000102h) conforms to the IIDC
standard, v 1.30.
The offset address of UnitDependentInfo is required to
be
440h + 000001h * 4 = 444h
Offset
0-7
8-15
16-23
24-31
Bus
400h
04
1F
ROM CRC
Info
404h
31
33
39
34
Block
408h
20
FF
60
00
40ch
08
00
46
02
NodeVendorID/ChipID-Hi
410h
00
0F
00
01
ChipID-Lo
Root
414h
0004
CRC
Directory
418h
03
08
00
46
ModuleVendorID
41ch
0C
00
83
C0
420h
8D
00
00
02
IndirectOffset
424h
D1
00
00
04
UnitDirectoryOffset
Offset
0-7
8-15
16-23
24-31
Unit
434h
0003
CRC
Directory
438h
12
00
A0
2D
UnitSpecID
43Ch
13
00
01
02
UnitSoftwareVersion
440h
D4
00
00
01
UnitDependentDirectory Offset
ConfigROM