Smart LTE Module Series
SC66 Hardware Design
SC66_Hardware_Design 29 / 139
USB_VBUS
41, 42
PI/
PO
Charging power
input;
Power supply output
for OTG device;
USB/charger
insertion detection
Vmax=10V
Vmin=3.6V
Vnorm=5.0V
USB2_HS_DM 25
IO
USB 2.0 differential
data bus (-)
90Ω differential
impedance;
USB 2.0 standard
compliant;
Only support host
mode.
USB2_HS_DP
26
IO
USB 2.0 differential
data bus (+)
USB1_HS_DM 33
IO
USB 2.0 differential
data bus (-)
90Ω differential
impedance;
USB 2.0 standard
compliant;
Support OTG
Support software
download.
USB1_HS_DP
32
IO
USB 2.0 differential
data bus (+)
USB_SS2_TX
_P
165
IO
USB 3.1 channel 2
differential transmit
(+)
90
Ω differential
impedance.
USB 3.1 standard
compliant.
USB_SS2_TX
_M
164
IO
USB 3.1 channel 2
differential transmit
(-)
USB_SS2_RX
_P
162
IO
USB 3.1 channel 2
differential receive
(+)
USB_SS2_RX
_M
161
IO
USB 3.1 channel 2
differential receive
(-)
USB_SS1_RX
_P
171
IO
USB 3.1 channel 1
differential receive
(+)
90Ω differential
impedance;
USB 3.1 standard
compliant.
USB_SS1_RX
_M
172
IO
USB 3.1 channel 1
differential receive
(-)
USB_SS1_TX
_P
174
IO
USB 3.1 channel 1
differential transmit
(+)
90Ω differential
impedance.
USB_SS1_TX
_M
175
IO
USB 3.1 channel 1
differential transmit
(-)