AMC7836 Datasheet, PDF (52/88 Pages) Texas Instruments – AMC7836 High-Density, 12-Bit Analog Monitor and Control Solution With Multichannel ADC, Bipolar DACs, Temperature Sensor, and GPIO Ports

AMC7836
SLAS986C – NOVEMBER 2014 – REVISED APRIL 2016
7.6.4 General Device Configuration: Address 0x10 through 0x17
7.6.4.1 ADC Configuration Register (address = 0x10) [reset = 0x00]
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Figure 74. ADC Configuration Register (R/W)
7
6
5
4
3
2
1
0
CMODE
CONV-RATE[1:0]
ADC-REF-
BUFF
Reserved
R/W-0
R/W-00
R/W-0
R/W-All zeros
Table 19. ADC Configuration Register Field Descriptions
Bit Field
7
CMODE
6-5 CONV-RATE[1:0]
4
ADC-REF-BUFF
3-0 Reserved
Type
R/W
R/W
R/W
R/W
Reset
0
00
0
All zeros
Description
ADC Conversion Mode Bit. This bit selects the ADC conversion
mode.
0: Direct mode. The analog inputs specified in the ADC
channel registers are converted sequentially one time.
When one set of conversions is complete, the ADC is idle
and waits for a new trigger.
1: Auto mode. The analog inputs specified in the AMC
channel registers are converted sequentially and
repeatedly. When one set of conversions is complete, the
ADC multiplexer returns to the first channel and repeats the
process. The ADC-UPDATE bit in register 0x0F must be
used to initiate the transfer of the latest conversion data to
the ADC Data registers.
ADC Conversion rate. See Table 20 to configure this setting.
ADC Reference Buffer bit. This bit must be set to 1 after device
power-up to enable the internal reference buffer driving the
ADC.
0: ADC reference buffer is disabled.
1: ADC reference buffer is enabled.
Reserved for factory use
Table 20. CONV-RATE[1:0] Bit Configuration
CONV-RATE[1:0]
00
01
10
11
Unipolar Channel Sample Time (µs)
11.5
23
34.5
69
Bipolar Channel Sample
Time (µs)
34.5
34.5
34.5
69
52
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