Texas Instruments AFE79 Series User Manual

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114
SBAU337–May 2020
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Macro
Table 1-61. (continued)
Macro AGC Digital Detector Absolute Time Crossing
1 0x00 1 RX Channel Select Bit 0: 1 → Value
specified in
subsequent
operands is valid for
1RX.
Bit 1: 1 → Value
specified in
subsequent
operands is valid for
2RX.
Bit 2: 1 → Value
specified in
subsequent
operands is valid for
3RX.
Bit 3: 1 → Value
specified in
subsequent
operands is valid for
4RX.
Bit 4 → RESERVED
Bit 5 → RESERVED
2 0x01 3 Number of samples
at F
ADC
/8 for Big
Step Attack detector
to declare attack.
Time constant is
given in number of
samples.
User has to
calculate the
number of samples
within time constant.
Total number of
samples =
ADC_Rate ×
Time_Constant [in
s] / 8
3 0x04 3 Number of samples
at F
ADC
/8 for Small
Step Attack detector
to declare attack
4 0x07 3 Number of samples
at F
ADC
/8 for Big
Step Decay detector
to declare decay
5 0x0A 3 Number of samples
at F
ADC
/8 for Small
Step Decay detector
to declare decay
Memory Not used
The attack detectors will trigger if number of times the absolute peak/power of the signal crossed the
programmed threshold is greater than the number programmed in this macro.
In case of decay detectors, the trigger happens if the actual number of crossings is less than the
programmed crossing limit from this macro.

Texas Instruments AFE79 Series Specifications

General

Brand	Texas Instruments
Model	AFE79 Series
Category	Control Unit
Language	English