Auxiliary I/O connector

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The auxiliary I/O connector is a 25-pin, D-SUB male connector.

Connector
Pin Signal
1 GND
2 LVTTL I/O 0
3 LVTTL I/O 2
4 LVTTL I/O 4
5 LVTTL I/O 6
6 LVTTL I/O 8
7 GND
8 LVTTL I/O 10
9 VTTL I/O 12
10 LVTTL I/O 14
11 LVTTL I/O 16
12 LVTTL I/O 18
13 GND
14 GND
15 LVTTL I/O 1
16 LVTTL I/O 3
17 LVTTL I/O 5
18 LVTTL I/O 7
19 LVTTL I/O 9
20 GND
21 LVTTL I/O 11
22 LVTTL I/O 13
23 LVTTL I/O 15
24 LVTTL I/O 17
25 LVTTL I/O 19