AMC7832_15 Datasheet, PDF (50/72 Pages) Texas Instruments – AMC7832 12-Bit Analog Monitor and Control Solution with Multi-Channel ADC, Bipolar DACs, Temperature Sensor and GPIO Ports

AMC7832
SLAS836 – MARCH 2014
www.ti.com
Table 34. Register name: Alarm Status 1 – Address: 0x71, Default: 0x00 (READ ONLY)
REGISTER
NAME
Alarm
Status 1
ADDRESS
0X71
BIT NAME
DESCRIPTION
DEFAULT
VALUE
7:4 Reserved
Reserved for factory use
0000
3
ALARMIN-ALR The ALARMIN-ALR is set to ‘1’ if the ALARMIN terminal is
0
enabled and set high.
2
THERM-ALR
Thermal alarm flag. When the die temperature is equal to or
0
greater than +150°C, the bit is set ('1') and the THERM-ALR flag
activates. The on-chip temperature sensor (LT) monitors the die
temperature. If LT is disabled, the THERM-ALR bit is always '0'.
The hysteresis of this alarm is 8°C.
1
LT-HIGH-ALR
LT-LOW-ALR = '1' when the temperature sensor is out of the
0
range defined by the upper threshold.
0
LT-LOW-ALR
LT-LOW-ALR = '1' when the temperature sensor is out of the
0
range defined by the lower threshold.
Table 35. Register name: General Status – Address: 0x72, Default: 0x00 (READ ONLY)
REGISTER
NAME
General
Status
ADDRESS
0x72
BIT NAME
7:3 Reserved
2
Reserved
1
GALR
0
DAVF
DESCRIPTION
Reserved for factory use
Reserved for factory use
Global alarm bit.
This bit is the OR function or all individual alarm bits of the status
register.
ADC Data available flag bit. Direct mode only. Always cleared in
Auto mode.
0: ADC conversion is in progress or ADC is in Auto mode
1: ADC conversions are complete and new data is available
DEFAULT
VALUE
All zeros
0
0
0
8.5.10 Temperature And GPIO Data: Address 0x78 – 0x7A
Table 36. Register name: Temperature Data (low byte) – Address: 0x78, Default: 0x00 (READ ONLY)
REGISTER
NAME
Temp Data
(low)
ADDRESS
0x78
BIT NAME
DESCRIPTION
7:0 TEMP-DATA(7:0) Stores the temperature sensor reading in twos complement
format.
DEFAULT
VALUE
0x00
Table 37. Register name: Temperature Data (high byte) – Address: 0x79, Default: 0x00 (READ ONLY)
REGISTER
NAME
Temp Data
(high)
ADDRESS
0x79
BIT NAME
7:4 Reserved
3:0 TEMP-
DATA(11:8)
DESCRIPTION
Reserved for factory use.
Stores the temperature sensor reading in twos complement
format.
DEFAULT
VALUE
All zeros
0x00
Table 38. Register name: GPIO – Address: 0x7A, Default: 0xFF (READ/WRITE)
REGISTER
NAME
GPIO
ADDRESS
0x7A
BIT NAME
7
GPIO-7
6
GPIO-6
5
GPIO-5
4
GPIO-4
3
GPIO-3
2
GPIO-2
1
GPIO-1
0
GPIO-0
DESCRIPTION
DEFAULT
VALUE
For write operation the GPIO terminal operates as an output.
1
Writing a ‘1’ to the GPIO-n bit sets the GPIO-N terminal to high
impedance. Writing a ‘0’ sets the GPIO-n terminal to logic low.
1
For read operations the GPIO terminal operates as an input.
1
Read the GPIO-n bit to receive the status of the GPIO-n terminal.
1
After power-on reset, or any forced hardware or software reset,
the GPIO-n terminal has a 48-kΩ input impedance to IOV_DD.
1
1
1
1
50
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