User's Manual

M10 Hardware Design
M10_HD_V3.0 - 21 -
EMERG_
OFF
17 I Emergency off.
Pulling down for
at least 20ms will
turn off the module
in case of
emergency. Use it
only when normal
shutdown through
PWRKEY or AT
command cannot
perform well.
VILmax=0.4V
VIHmin=2.2V
V
open
max=2.8V
Open
drain/collector
driver required in
cellular device
application.
If unused, keep
this pin open.
Module status indication
PIN NAME PIN
NO.
I/O DESCRIPTION DC
CHARACTERISTICS
COMMENT
STATUS 54 O Used to indicate
module’s operating
status. High level
indicates module
power-on and low
level indicates
power-down.
VOLmax=
0.15*VDD_EXT
VOHmax=
0.85*VDD_EXT
If unused, keep
this pin open.
Audio interfaces
PIN NAME PIN
NO.
I/O DESCRIPTION DC
CHARACTERISTICS
COMMENT
MIC1P
MIC1N
23
24
I Positive and
negative
voice-band input.
For Audio DC
characteristics refer to
Chapter 3.10.
If unused, keep
these pins open.
MIC2P
MIC2N
25
26
I Auxiliary positive
and negative
voice-band input.
SPK1P
SPK1N
22
21
O Positive and
negative
voice-band output.
SPK2P 20 O Auxiliary positive
voice-band output.
AGND 19 AGND is separate
ground connection
for external audio
circuits.
General purpose input/output
PIN NAME PIN
NO.
I/O DESCRIPTION DC
CHARACTERISTICS
COMMENT