Smart Machine Smart Decision
T5320_User Guide_V1.02
18
2012-08-10
gain before ADC
txVol
Digital gain of input
signal after ADC
0,
1...65535
Mute,
-84...+12dB
20 * log
(txVol/
16384)
AT+CTXVOL
txGain
Digital gain of input
signal after
summation of
sidetone
0,
1...65535
Mute,
-84...+12dB
20 * log
(txGain/
16384)
AT+CTXGAIN
txFilter
Input PCM 13-tap
filter parameters, 7
values
0...65535
---
MATLAB
calculate
AT+CTXFTR
rxGain
Digital gain of
output signal after
summation of
sidetone
0,
1...65535
Mute,
-84...+12dB
20 * log
(rxGain/
16384)
AT+CRXGAIN
rxVol
Digital Volume of
output signal after
speech decoder,
before summation of
sidetone and DAC
-300…300
dbm
-300…300d
bm
AT+CLVL
AT+CVLVL
AT+CRXVOL
stGain
Digital attenuation
of sidetone
0, 1...65535
Mute,
-96...0dB
20 * log
(stGain/
16384) -12
AT+SIDET
rxFilter
Output PCM 13-tap
filter parameters, 7
values
0...65535
---
MATLAB
calculate
AT+CRXFTR
Please refer to
document [1]
and
document [3]
for details.
6.3.2
ADC channel
T5320 provides an auxiliary ADC, which can be used to measure the voltage. User can use AT command
“AT+CADC=2” to read the voltage value.
Table 8: ADC specification
Parameter
Min
Typ
Max
Unit
Voltage range
0
-
2.2
V
ADC Resolution
-
12
-
bits
Sampling rate
-
-
200K
Hz
Note: the maximum voltage that the ADC can gather is 2.2V
Table 9: AT+CADC Read ADC
Description
Summary of Contents for T5320
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