Quectel M10 Hardware Description page 19

M10 Hardware Design
GND
Power on or power off
PIN NAME I/O
PWRKEY I
Emergency shutdown
PIN NAME I/O
EMERG_OFF I
Audio interfaces
PIN NAME I/O
MIC1P I
MIC1N
MIC2P I
MIC2N
SPK1P O
SPK1N
SPK2P O
AGND
BUZZER O
M10_HD_V1.00
judge whether the system is
power on or off. When the
voltage is low, the system is
power off. Otherwise, the
system is power on.
Digital ground
DESCRIPTION
Voltage input for power
on/off key. PWRKEY should
be pulled down to turn on or
turn off the system. The user
should keep pressing the key
for a moment when turn on
or turn off the system.
Because the system need
margin time in order to assert
the software.
DESCRIPTION
Voltage input for emergency
shutdown under emergent
situation. EMERG_OFF
should be pulled down for at
least 20ms to emergency
shutdown the system. The
module can restart if
PWRKEY is activated after
emergency shutdown.
DESCRIPTION
Positive and negative
voice-band input
Auxiliary positive and
negative voice-band input
Positive and negative
voice-band output
Auxiliary positive
voice-band output
AGND is separate ground
connection for external audio
circuits.
Buzzer output
Imax=20mA
DC CHARACTERISTICS
VILmax=0.3*VBAT
VIHmin=0.7*VBAT
VImax=VBAT
DC CHARACTERISTICS
VILmax=0.4V
VIHmin=2.2V
V max=2.8V
open
DC CHARACTERISTICS
Audio DC Characteristics
refer to chapter 3.9.4
to add a
2.2~4.7uF bypass
capacitor, when
using this pin for
power supply.
COMMENT
Pull up to VBAT
Internally.
COMMENT
Open
drain/collector
driver required in
cellular device
application.
If unused keep
pin open.
COMMENT
If unused keep
pins open
If unused keep
pin open
If unused keep
pins open.
If unused keep
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