Usim Interface - SimCom SIM5215 Hardware Design

Table 14: Audio parameter
Parameter Influence to
MICP/MICN
analogue
micAmp1
gain before ADC
Digital gain of input
txVol
signal after ADC
Digital gain of input
signal
txGain
summation
sidetone
Input PCM 13-tap
filter parameters, 7
txFilter
values
Digital
output signal after
rxGain
summation
sidetone
Digital Volume of
output signal after
speech
rxVol
before summation of
sidetone and DAC
Digital
stGain
of sidetone
Output PCM 13-tap
filter parameters, 7
rxFilter
values
Note: If users require better experience on audio, users should modify these parameters according to their own electronic
and mechanical design.
3.5

USIM Interface

The USIM provides the required subscription verification information to allow the mobile equipment to
attach to a GSM or UMTS network. Both 1.8V and 3.0V SIM Cards are supported.
SIM5215&SIM5216_Hardware Design_V2.02
Range
amplifier 0...1
0,
1...65535
after 0,
of 1...65535
0...65535
gain of
0,
of 1...65535
decoder, -300...300
attenuation
0, 1...65535
0...65535
Smart Machine Smart Decision
Gain range Calculation AT command
0...24dB 2 steps
20
Mute,
(txVol/
-84...+12dB
16384)
20
Mute,
(txGain/
-84...+12dB
16384)
MATLAB
---
calculate
20
Mute,
(rxGain/
-84...+12dB
16384)
-300...300d
dbm
bm
20
Mute,
(stGain/
-96...0dB
16384) -12
MATLAB
---
calculate
34
AT+CMICAMP1
* log
AT+CTXVOL
* log
AT+CTXGAIN
AT+CTXFTR
* log
AT+CRXGAIN
AT+CLVL
AT+CVLVL
AT+CRXVOL
* log
AT+SIDET
AT+CRXFTR
2012-08-31