Specifications

M80 Hardware Design
M80_HD_V1.0 - 24 -
only when normal
shutdown through
PWRKEY or AT
command can’t
perform well.
pin open.
Module indicator
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
STATUS
16
O
Indicate module
operating status. High
level indicates module
is power-on and low
level indicates
power-down.
VOHmin=
0.85*VDD_EXT
VOLmax=
0.15*VDD_EXT
If unused, keep this
pin open.
Audio interface
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
MIC1P
MIC1N
9，10
I
Channel one of
positive and negative
voice-band input
If unused, keep these
pins open.
MIC2P
MIC2N
7，8
I
Channel two of
positive and negative
voice-band input
SPK1P
SPK1N
12,11
O
Channel one of
positive and negative
voice-band output
If unused, keep these
pins open.
SPK2P
AGND
5,6
O
Channel two of
positive and negative
voice-band output
1, If unused, keep
these pins open.
2, Support both voice
and ring.
LOUDSPK
N
LOUDSPK
P
13，
14
O
Channel three of
positive and negative
voice-band output
1, If unused, keep
these pins open.
2, Embedded
amplifier of class AB
internally.
3, Support both voice
and ring.
Net status indicator
PIN NAME
PIN
NO.
I/O
DESCRIPTION
DC
CHARACTERISTICS
COMMENT
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