CS
Dout
D9 – MSB
D8
D7
D6
D5
D4
D3
D2
D1
D0
HIGH IMPEDANCE
D9
SCLK
1
2
3
4
5
6
7
8
9
10
1
SAMPLE ANALOG INPUT
Din
A3
MSB
EOC
SHIFT IN NEW MUX ADDRESS,
SIMULTANEOUSLY SHIFT OUT PREVIOUS CONVERSION VALUE
A/D CONVERSION
INTERVAL
A2
A1
A0
A3
INITIALIZE
RE-INITIALIZE
Figure 9. Timing for 10-Clock Transfer Using CS
MUST BE HIGH ON POWER UP
CS
Dout
D9 – MSB
D8
D7
D6
D5
D4
D3
D2
D1
D0
LOW LEVEL
D9
SCLK
1
2
3
4
5
6
7
8
9
10
1
SAMPLE ANALOG INPUT
Din
A3
MSB
EOC
SHIFT IN NEW MUX ADDRESS,
SIMULTANEOUSLY SHIFT OUT PREVIOUS CONVERSION VALUE
INITIALIZE
A/D CONVERSION
INTERVAL
A2
A1
A0
A3
Figure 10. Timing for 10-Clock Transfer Not Using CS
NOTES:
1. D9, D8, D7, D6, D5,
…,
D0 = the result of the previous A/D conversion.
2. A3, A2, A1, A0 = the mux address for the next A/D conversion.
MC145053
8
MOTOROLA WIRELESS SEMICONDUCTOR
SOLUTIONS DEVICE DATA
MOTOROLA [ MOTOROLA, INC ]
