DB25 AES3 (Other) Breakout connector pinout

Female Male
Pin Signal
1 Digital Out 7/8 +
2 Ground
3 Digital Out 5/6 -
4 Digital Out 3/4 +
5 Ground
6 Digital Out 1/2 -
7 Digital In 7/8 +
8 Ground
9 Digital In 5/6 -
10 Digital In 3/4 +
11 Ground
12 Digital In 1/2 -
13 Not Used
14 Digital Out 7/8 -
15 Digital Out 5/6 +
16 Ground
17 Digital Out 3/4 -
18 Digital Out 1/2 +
19 Ground
20 Digital In 7/8 -
21 Digital In 5/6 +
22 Ground
23 Digital In 3/4 -
24 Digital In 1/2 +
25 Ground

Shown from wiring side.
Used by Tascam and Digidesign