AMC7832_15 Datasheet, PDF (49/72 Pages) Texas Instruments – AMC7832 12-Bit Analog Monitor and Control Solution with Multi-Channel ADC, Bipolar DACs, Temperature Sensor and GPIO Ports

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AMC7832
SLAS836 – MARCH 2014
Table 30. Register name: ADCn-Data (high byte) – Address: 0x20 - 0x41, Default: 0x00 (READ ONLY)
REGISTER
NAME
ADCn Data
(high)
ADDRESS
0x20 to
0x41
BIT NAME
7:4 Reserved
3:0 ADCn-DATA
(11:8)
DESCRIPTION
Reserved for factory use
Stores the 12-bit ADC_n conversion results in straight binary
format for both types of inputs channels (unipolar and bipolar).
DEFAULT
VALUE
All zeros
All zeros
8.5.8 DAC Data: Address 0x50 – 0x67
Table 31. Register name: DACn-Data (low byte) – Address: 0x50 - 0x67, Default: 0x00 (READ/WRITE)
REGISTER
NAME
DACn Data
(low)
ADDRESS
0x50 to
0x67
BIT NAME
DESCRIPTION
DEFAULT
VALUE
7:0 DACn-DATA(7:0) Stores the 12-bit data to be loaded to the DAC_n latches in
All zeros
straight binary format. The straight binary format is used for both
DAC ranges: -10 to 0V and 0 to 10V.
Table 32. Register name: DACn-Data (high byte) – Address: 0x50 - 0x67, Default: 0x00 (READ/WRITE)
REGISTER
NAME
DACn Data
(high)
ADDRESS
0x50 to
0x67
BIT NAME
7:4 Reserved
3:0 DACn-DATA
(11:8)
DESCRIPTION
Reserved for factory use
Stores the 12-bit data to be loaded to the DAC_n latches in
straight binary format. The straight binary format is used for both
DAC ranges: -10 to 0V and 0 to 10V.
DEFAULT
VALUE
All zeros
All zeros
8.5.9 Status Registers: Address 0x70 – 0x72
The AMC7832 continuously monitors all unipolar analog inputs and local temperature sensor during normal
operation. When any input is out of the specified range N consecutive times, the corresponding alarm bit is set
('1'). If the input returns to the normal range before N consecutive times, the corresponding alarm bit remains
clear ('0'). This configuration avoids any false alarms. When an alarm status occurs, the corresponding alarm bit
is set ('1'). When the corresponding bit in the ALARMOUT Source Registers is cleared ('0'), the ALARMOUT
terminal is latched. Whenever an alarm status bit is set, it remains set until the event that caused it is resolved
and its status register is read. Reading the Alarm Status Registers clears the alarm status bits. The alarm bit can
only be cleared by reading its Alarm Status register after the event is resolved, or by hardware reset, software
reset, or power-on reset. All alarm status bits are cleared when reading the Alarm Status registers, and all these
bits are reasserted if the out-of-limit condition still exists after the next conversion cycle, unless otherwise noted.
Table 33. Register name: Register name: Alarm Status 0 – Address: 0x70, Default: 0x00 (READ ONLY)
REGISTER
NAME
Alarm
Status 0
ADDRESS
0X70
BIT NAME
7:5 Reserved
4
ADC16-ALR
3
ADC15-ALR
2
ADC14-ALR
1
ADC13-ALR
0
ADC12-ALR
DESCRIPTION
Reserved for factory use
ADC16-ALR = '1' when ADC16 is out of the range defined by the
corresponding threshold registers. ADC16-ALR = '0' when the
analog input is not out of the specified range.
ADC15-ALR = '1' when ADC16 is out of the range defined by the
corresponding threshold registers. ADC15-ALR = '0' when the
analog input is not out of the specified range.
ADC14-ALR = '1' when ADC16 is out of the range defined by the
corresponding threshold registers. ADC14-ALR = '0' when the
analog input is not out of the specified range.
ADC13-ALR = '1' when ADC16 is out of the range defined by the
corresponding threshold registers. ADC13-ALR = '0' when the
analog input is not out of the specified range.
ADC12-ALR = '1' when ADC16 is out of the range defined by the
corresponding threshold registers. ADC12-ALR = '0' when the
analog input is not out of the specified range.
DEFAULT
VALUE
000
0
0
0
0
0
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