A/D Multiplex Control Register - Omega Engineering OME-A8111 Hardware Manual

2.4.7 A/D Multiplex Control Register

(WRITE) Base+A : A/D Multiplexer Control Register Format
Bit 7 Bit 6
X X
A/D input channel selection data =3 bits: D2...D0, D2=MSB, D0=LSB, X=don't care
NOTE: The settling time of the multiplexer depends on the source resistance of input
sources.
Approx. Source resistance = 0.1 KΩ
Approx. Source resistance = 1 KΩ
Approx. Source resistance = 10 KΩ
Approx. Source resistance = 100 KΩ
Sec 2.4.6 gives information about settling time delay.
OME-A-8111 Hardware Manual (ver.1.1, Jul/2003)
Bit 5 Bit 4
X X
Channel Bit_2
0 0
1 0
2 0
3 0
4 1
5 1
6 1
7 1
Approx. Settling time = 5 µs.
Bit 3 Bit 2
X D2
Bit_1 Bit_0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Approx. Settling time = 3 µs.
Approx. Settling time = 10 µs.
Approx. Settling time = 100 µs.
Bit 1 Bit 0
D1 D0
15