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Chapter 4 Register Map and Descriptions
©
National Instruments Corporation 4-69 AT-MIO-16X User Manual
Digital Input Register
The Digital Input Register, when read, returns the logic state of the
eight AT-MIO-16X digital I/O lines.
Address: Base address + 1C (hex)
Type: Read-only
Word Size: 16-bit
Bit Map:
Bit Name Description
15-8 X Don’t care bits.
7-4 BDIO<3..0> These four bits represent the logic state
of the digital lines BDIO<3..0>.
3-0 ADIO<3..0> These four bits represent the logic state
of the digital lines ADIO<3..0>.
76 5
BDIO2
43
BDIO0
2
ADIO2
10
ADIO1BDIO3 BDIO1 ADIO0ADIO3
15
MSB
LSB
14 13
X
12 11
X
10
X
98
XXX XX