AMC7891 Datasheet, PDF (21/41 Pages) Texas Instruments – Analog Monitor and Control Circuit with 10-Bit, Multi-Channel ADC and Four DACs, Temperature Sensor, and 12 GPIOs

AMC7891
www.ti.com
SBAS518A – AUGUST 2011 – REVISED DECEMBER 2011
Register name: ADC_gain – Address: 0x38, Default: 0xFF00 (READ/WRITE)
Register
Name
Address Bit Name
Function
ADC_gain
0x38
15 adc0_gain When set to ‘1’ the corresponding analog input channel AIN_n (n = 0, 1,
…, 7) input range is 2 × V_REF.
14 adc1_gain
13 adc2_gain When cleared to ‘0’ the corresponding input channel AIN_n (n = 0, 1, …,
7) input range is V_REF.
12 adc3_gain
11 adc4_gain
10 adc5_gain
9 adc6_gain
8 adc7_gain
7:0 Reserved Reserved for factory use.
Default
Value
1
1
1
1
1
1
1
1
All zeros
Register name: DAC_clear – Address: 0x39, Default: 0x0000 (READ/WRITE)
Register
Name
Address Bit Name
Function
ADC_clear
0x39
15:4 Reserved Reserved for factory use.
3
dac3_clear When set to ‘1’ clears the corresponding DACout_n (n = 0, 1, …, 3)
2
dac2_clear ^{output to the value specified in register dacn_clear, 0x2F to 0x32.}
1
dac1_clear When cleared to ‘0’ the corresponding DACout_n (n = 0, 1, …, 3)
output returns to normal operation.
0
dac0_clear
Default
Value
All zeros
0
0
0
0
Register name: DAC_sync – Address: 0x3A, Default: 0x0000 (READ/WRITE)
Register
Name
Address Bit Name
Function
DAC_sync
0x3A
15:4 Reserved Reserved for factory use.
3 dac3_sync When set to ‘1’ clears the corresponding DACout_n (n = 0, 1, …, 3) is set to
2 dac2_sync ^{synchronous-mode.}
1 dac1_sync When cleared to ‘0’ the corresponding DACout_n (n = 0, 1, …, 3) is set to
asynchronous-mode.
0 dac0_sync
Default
Value
All zeros
0
0
0
0
Register name: AMC_power – Address: 0x3B, Default: 0x0000 (READ/WRITE)
Register
Name
Address Bit Name
Function
AMC_power 0x3B
15 Reserved Reserved for factory use.
14 adc_on
When cleared to '0' the primary ADC is in power-down mode.
When set to '1' the primary ADC is in active mode.
13 ref_on
When cleared to '0' the internal reference buffer is in power-down mode; the
device is in External ADC Reference mode and the REF pin is an input.
When set to '1' the internal reference buffer is active; the device is in
Internal ADC Reference mode and the REF pin is an output.
12 dac0_on
When cleared to '0' DAC0 is in power-down mode. DACout_0 is in
high-impedance state.
When set to '1' DAC0 is in active mode.
11 dac1_on
When cleared to '0' DAC1 is in power-down mode. DACout_1 is in
high-impedance state.
When set to '1' DAC1 is in active mode.
10 dac2_on
When cleared to '0' DAC2 is in power-down mode. DACout_2 is in
high-impedance state.
When set to '1' DAC2 is in active mode.
9 dac3_on When cleared to '0' DAC3 is in power-down mode. DACout_3 is in
high-impedance state.
When set to '1' DAC3 is in active mode.
8:0 Reserved Reserved for factory use.
Default
Value
0
0
0
0
0
0
0
All zeros
Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): AMC7891
Submit Documentation Feedback
21