Measurement Computing PCM-DAS16D/12 - Manual (Page 28)

0 1 0 1 0 to 5 V
0 1 1 0 0 to 2.5 V
0 1 1 1 0 to 1.25 V
The digital I/O lines may be set as follows via 2 control bits.
UDIR LDIR Bits 7:4 Bits 3:0
0 0 Input Input
0 1 Input Output
1 0 Output Input
1 1 Output Output
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