Quectel SG368Z Series

Smart Module Series
SG368Z_Series_Hardware_Design 20 / 113
HPH_R
102
AO
Headphone right
channel output
HPH_GND
101
AI
Headphone
reference ground
If unused, connect
this pin to ground.
SPK_P
104
AO
Loudspeaker output
(+)
SPK_M
103
AO
Loudspeaker output
(-)
MIC_P
98
AI
Microphone input (+)
MIC_M
97
AI
Microphone input (-)
VCC_SPK_HP
176
PI
Analog audio power
supply
Vmax = 5.5 V
Vmin = 2.7 V
Vnom = 5 V
If the analog audio
function is not
used, this pin
needs to be
connected to
VBAT.
USB Interfaces
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
HOST_PWR_EN
85
DO
Host USB VBUS
power enable
PMUIO1
USB0_VBUS
111
DI
USB0 insertion
detection
V
IH
max = 2.7 V
V
IH
min = 3.3 V
Can not supply
power for
peripherals.
A test point must
be reserved.
USB0_ID
118
DI
USB0 ID detect
V
IL
max = 0.3 V
Internally pull up
to 1.8 V.
USB0_DP
112
AIO
USB0 2.0 differential
data (+)
A test point must
be reserved.
USB0_DM
113
AIO
USB0 2.0 differential
data (-)
A test point must
be reserved.
USB0_SS_TX_P
107
AO
USB0 3.0 transmit
(+)
USB0_SS_TX_M
108
AO
USB0 3.0 transmit
(-)
USB0_SS_RX_P
109
AI
USB0 3.0 receive (+)
USB0_SS_RX_M
110
AI
USB0 3.0 receive (-)
USB1_DP
79
AIO
USB1 2.0 differential
data (+)