MAX1464 Datasheet, PDF (30/47 Pages) Maxim Integrated Products – Low-Power, Low-Noise Multichannel Sensor Signal Processor

Low-Power, Low-Noise Multichannel
Sensor Signal Processor
Table 5. ADC_Control (Address = 00h)
BITS
15–12
11–8
7–3
2
NAME
—
SE[3:0]
—
CNVT1
DESCRIPTION
Unused.
Single-ended signal source multiplexer. SE[3] = MSB.
Unused.
1 = Initiate conversion on channel 1 using ADC settings specified in registers ADC_Config_1A and
ADC_Config_1B. The ADC result is stored in ADC_Data_1. CPU is halted during the conversion
process. This bit is automatically reset to zero when conversion is completed.
1 = Initiate conversion on channel 2 using ADC settings specified in registers ADC_Config_2A and
1
CNVT2 ADC_Config_2B. The ADC result is stored in ADC_Data_2. CPU is halted during the conversion
process. This bit is automatically reset to zero when conversion is completed.
1 = Initiate conversion on temperature sensor using ADC settings specified in registers
0
CNVTT ADC_Config_TA and ADC_Config_TB. The ADC result is stored in ADC_Data_T. CPU is halted during
the conversion process. The bit is automatically reset to zero when conversion is completed.
Table 6. Initiate Conversion (CNVT1, CNVT2, CNVTT)
CNVT1
0
0
CNVT2
0
0
CNVTT
0
1
SE[3:0] ^RESULT
DATA_n
DESCRIPTION
XXXX
— No measurement.
0000
Convert the temperature sensor signal using the settings in
T
ADC_Config_TA and ADC_CONFIG_TB, storing the result in the
ADC_Data_T register.
Convert the differential signal INP2-INM2 using the settings in
0
1
X
0000
2
ADC_Config_2A and ADC_Config_2B, storing the result in the ADC_Data_2
register.
Convert the differential signal INP1-INM1 using the settings in
1
X
X
0000
1
ADC_Config_1A and ADC_Config_1B, storing the result in the ADC_Data_1
register.
0
0
1
bbbb*
— Not used for any setting of SE[3:0] ≠ 0000.
Convert the single-sided signal indicated by SE[3:0] using the settings in
0
1
X
bbbb*
2
ADC_Config_2A and ADC_Config_2B, if appropriate, storing the result in
the ADC_Data_2 register.
Convert the single-sided signal indicated by SE[3:0] using the settings in
1
X
X
bbbb*
1
ADC_Config_1A and ADC_Config_1B, if appropriate, storing the result in
the ADC_Data_1 register.
*The value bbbb is any nonzero single-ended setting.
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