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Here is the information that is not in the HLP file for the SB1394 port SB-Audigy SB0090 1394 Black connector pin out

NOTE:
there is no BUS_POWER on this port. you will need to get that from a different source.
The 1394 connections on the SB Audigy is only intended for connection to the 1394 part of the Audigy Drive.
The Pin-Out definitions may change in later Versions of the card without notice.

J6 on the current SB0090 cards is defined as:
Pin Signal
-----+---------------
1 | TPA+
2 | TPA-
3 | PHY_GND
4 | PHY_GND
5 | TPB+
6 | TPB-
7 | NC
8 | NC
9 | PHY_GND
10 | KEY


The internal manual did not state it, so I assume it is standard Pin order as ribbon Cable.
ODD Pins on one side and EVEN pins on the other.


1 3 5 7 9
* * * * *
* * * * O
2 4 6 8 10


The external connector for the 1394 port has the following definition:

1394 Port - J1
PIN SIGNAL
---+-----------
1 BUS_POWER
2 PHY_GND
3 TPB-
4 TPB+
5 TPA-
6 TPA+
7 CHASSIS_GND1
8 CHASSIS_GND2