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HUAWEI MG301 B2B Module
HardwareGuide
Function
Signal Name I/O Waveform and
INTMIC_N
EXTEAR_N
EXTEAR_P
INTEAR_P
INTEAR_N
NC pin
NC
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
VBAT
VCOIN
5.5.2 Working Current
Table 5-6 lists the working current of the MG301 B2B module.
Level
AI
AO
AO
AO
AO
Minimum Value
3.30
2.00
Huawei Proprietary and Confidential Copyright ©
Huawei Technologies Co., Ltd
Issue 06 (2013-06-13)
Electrical and Reliability Features
Remarks
Negative end of differential handset MIC input
through channel 1
Negative end of differential speaker output
through channel 2
Positive end of differential speaker output
through channel 2
Positive end of differential speaker audio
output through channel 1
Negative end of differential speaker audio
output through channel 1
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.
Typical Value
Maximum Value
3.80
4.80
3.00
3.15
Unit
V
V
40
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