SIM Tech SimCom SIM5218E, Проектирование аппаратного обеспечения

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SIM5218E Hardware Design
SIM5218E_ Hardware Design_V1.06 2012.09.21
35
Table 14
: Audio
Characteristics
Audio Device no.
AT+CSDVC=
1 2 3
Name Handset Headset Speaker phone
Purpose Default for DSB with
Votronic handset Mono Headset handheld speaker-phone
TX-Filters Adjustable Adjustable Adjustable
RX-Filters Adjustable
adjusted to fit artificial
ear type 3.2 low leakage Adjustable Adjustable
500 Hz HP
Gain setting: Adjustable Adjustable Adjustable
micAmp1 0 （ 0 dB ） 0 （ 0 dB ） 0 （ 0 dB ）
micAmp 7
（
10.5 dB
）
7
（
10.5 dB
）
4
（
6 dB
）
txGain 23143 51811 32690
txVol 16384 16384 16384
Default
MIC path
Parameters
txFilter
[tap0~6] 0xff33, 0x05d8,
0xf488, 0x0af3,
0x24bb, 0xca42,
0x7c95 0,0,0,
0,0,0,0 0xfff3, 0x001d,
0xffb9, 0x016b,
0xfa71, 0x0c08,
0x309a
rxGain 11599 6523 41155
rxVol -100 -100 0
stGain 2304 1024 0
Default
Output
path
Parameters rxFilter
[tap0~6]
0xff00, 0xfac9,
0x0571, 0xf365,
0x0bc2, 0xf2bb,
0x533a 0,0,0,
0,0,0,0 0xfd3f, 0xfc4f,
0xfb60, 0xfa27,
0xf97c, 0xf920,
0x3934
Power supply VMIC ON during call ON during call ON during call
Sidetone Adjustable Adjustable Adjustable
Volume control Adjustable Adjustable Adjustable
Echo canceller Filter
length Behaviour
optimized for ON 16ms low echo ON 16ms moderate echo ON 64ms high echo
Non Linear Processor
with Comfort Noise
Generator ON ON ON
Noise Reduction -12dB -12dB -12dB
MIC input signal for
0dBm0, 1 f = 1024 Hz
17.5mV 5mV 5mV