AMC7891 Datasheet, PDF (17/41 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 DESCRIPTIONS
Register name: temp_data – Address: 0x00, Default: 0x0000 (READ ONLY)
Register
Name
Address Bit
Name
Function
temp_data
0x00 15:12 Reserved
Reserved for factory use.
11:0 temp_data(11:0) Stores the temperature sensor reading in twos complement format.
0.125°C/LSB.
Default Value
All zeros
0x000
Register name: temp_config – Address: 0x0A, Default: 0x0008 (READ/WRITE)
Register
Name
Address Bit
Name
Function
temp_config 0x0A 15:4 Reserved
Reserved for factory use.
3
temp_en
When set to ‘1’, the on-chip temperature sensor is enabled.
2:0
Reserved
Reserved for factory use.
Default Value
All zeros
1
All zeros
Register name: temp_rate – Address: 0x0B, Default: 0x0007 (READ/WRITE)
Register
Name
Address Bit
Name
Function
temp_rate 0x0B 15:3 Reserved
Reserved for factory use.
2:0 temp_rate(2:0) Sets the temperature sensor ADC conversion time
temp_rate(2:0)
000
001
010
011
100
101
110
111
Conversion time
128x
64x
32x
16x
8x
4x
2x
15 ms
Register name: ADCn_data – Address: 0x23 to 0x2A, Default: 0x0000 (READ ONLY)⁽¹⁾
Register Address Bit
Name
Name
Function
ADCn_
data
0x23 to 15:10 Reserved
Reserved for factory use.
0x2A _{9:0 adcn_data(9:0) Stores the 10-bit ADCn conversion results in straight binary format.}
Input Channel
AIN_0
AIN_1
AIN_2
AIN_3
AIN_4
AIN_5
AIN_6
AIN_7
ADC Register Value
adc0_data(9:0)
adc1_data(9:0)
adc2_data(9:0)
adc3_data(9:0)
adc4_data(9:0)
adc5_data(9:0)
adc6_data(9:0)
adc7_data(9:0)
Register
Address
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
(1) All ADCn_data registers are formatted in the manner shown here. n = 0, 1, …, 7
Default Value
All zeros
111
Default Value
All zeros
All zeros
Copyright © 2011, Texas Instruments Incorporated
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