User`s manual

22 Hardware Information
*NC for USB-1901
Table 2-2: USB-1901/1902 pin assignment in pseudo-differential AI mode
Pin Function Pin Function
20 ECLK 40 AOTG*
19 NC 39 AITG
18 NC 38 GPI7
17 GPO3 37 GPI6
16 GPO2 36 GPI5
15 GPO1 35 GPI4
14 GPO0 34 GPI3
13 DGND 33 GPI2
12 AGND 32 GPI1
11 *AO1 31 GPI0
10 *AO0 30 DGND
9 AGND 29 AISE
8 AIL3 28 AIL7
7 AIH3 27 AIH7
6 AIL2 26 AIL6
5 AIH2 25 AIH6
4 AIL1 24 AIL5
3 AIH1 23 AIH5
2 AIL0 22 AIL4
1 AIH0 21 AIH4