ADS8284
www.ti.com................................................................................................................................................................................................... SLAS628–MARCH 2009
MXCLK
C3
t
C2
su6
C1
Selected
Channel
Ch 0
Ch 1
Ch 0
Ch 1
Ch 0
Ch 0
Ch 1
Ch 2
AUTO = 1,device operation in auto mode
Figure 7. Multiplexer Auto Mode Timing Diagram
Manual sequencing: A logic zero level on the AUTO pin selects manual sequencing mode. Pins C1and C2 set
the channel address. On the rising edge of MXCLK, the addressed channel is connected to the ADC driver input.
Table 2. Channel Selection in Manual Mode
MODE
CHANNEL ADDRESS PINS
CLOCK PIN
CHANNEL
AUTO
C3
X
C2
0
C1
0
MXCLK
0
0
0
0
↑
↑
↑
↑
0
1
2
3
X
0
1
X
1
0
X
1
1
MXCLK
C2
C1
t
su6
Selected
Channel
Ch 1
Ch 3
Ch 2
Ch 0
Ch 3
Ch 1
Ch 2
Ch 0
AUTO = 0, device operation in manual mode
Figure 8. Multiplexer Manual Mode Timing Diagram
Copyright © 2009, Texas Instruments Incorporated
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