40
HUAWEI MG301 B2B Module
HardwareGuide
Electrical and Reliability Features
Function
Signal Name
I/O
Waveform and
Level
Remarks
INTMIC_N
AI
Negative end of differential handset MIC input
through channel 1
EXTEAR_N AO
Negative end of differential speaker output
through channel 2
EXTEAR_P
AO
Positive end of differential speaker output
through channel 2
INTEAR_P
AO
Positive end of differential speaker audio
output through channel 1
INTEAR_N
AO
Negative end of differential speaker audio
output through channel 1
NC pin
NC
Pins 9, 13, 15, 17, 19, 21, 23, 26, 27, 30, 31,
and 39 are internal pins. These pins need to
be left floating when they are used.
P
indicates power pins;
I
indicates pins for digital signal input;
O
indicates pins for digital signal
output;
AI
indicates pins for analog signal input;
AO
indicates pins for analog signal output.
5.5
Power Supply Features
5.5.1
Input Power Supply
Table 5-5 lists the requirements for input power of the MG301 B2B module.
Table 5-5
Requirements for input power of the MG301 B2B module
Parameter
Minimum Value
Typical Value
Maximum Value
Unit
VBAT
3.30
3.80
4.80
V
VCOIN
2.00
3.00
3.15
V
5.5.2
Working Current
Table 5-6 lists the working current of the MG301 B2B module.
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Huawei Technologies Co., Ltd
Issue 06 (2013-06-13)