L
LE920 Hardware User Guide
1vv0301026 Rev.0 - draft4 – 2013-05-
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 17 of 76
3.
LE920 Module Connections
3.1.
PIN-OUT
PAD
Signal
I/O
Function
Type
COMMENT
USB HS 2.0 Communication Port
D19
USB_D+
I/O USB differential Data(+)
F19
USB_D-
I/O USB differential Data(+)
A18
USB_VBUS
AI Power sense for the internal USB transceiver
Power
Asynchronous UART – Prog. / data +HW Flow Control
AH19
C103/TXD
I
Serial data input (TXD) from DTE
1.8V
AF19
C104/RXD
O
Serial data output to DTE
1.8V
AC18
C108/DTR
I
Input for Data terminal ready signal (DTR) from DTE 1.8V
AA18
C105/RTS
I
Input for Request to send signal (RTS) from DTE
1.8V
AK19
C106/CTS
O
Output for Clear to send signal (CTS) to DTE
1.8V
AE18
C109/DCD
O
Output for Data carrier detect signal (DCD) to DTE
1.8V
AG18
C107/DSR
O
Output for Data set ready signal (DSR) to DTE
1.8V
AJ18
C125/RING
O
Output for Ring indicator signal (RI) to DTE
1.8V
Asynchronous Auxiliary UART
AB19
TXD_AUX
O
Auxillary UART (TX Data to DTE)
1.8V
AD19
RXD_AUX
I
Auxillary UART (RX Data from DTE)
1.8V
SIM Card Interface 1
A10
SIMCLK1
O
External SIM signal – Clock
1.8/2.85V
B11
SIMRST1
O
External SIM signal – Reset
1.8/2.85V
B9
SIMIO1
I/O External SIM signal - Data I/O
1.8/2.85V
B7
SIMIN1
I
External SIM signal - Presence (active low)
1.8V
A8
SIMVCC1
-
External SIM signal – Power supply for the SIM
1.8/2.85V
Audio
B5
AO Earphone signal output1, phase +
Audio
A4
EAR1_MT-
AO Earphone signal output1, phase -
Audio
B3
AI Mic signal input1, phase +
Audio
A2
MIC1_MT-
AI Mic signal input1, phase -
Audio
E2
AO Earphone signal output2, phase +
Audio
D1
EAR2_MT-
AO Earphone signal output2, phase -
Audio
C2
AI Mic signal input2, phase +
Audio
B1
MIC2_MT-
AI Mic signal input2, phase -
Audio
Digital Voice interface (DVI)
D11
DVI_WA0
O
Digital Voice interface (WA0 master output)
1.8V
C8
DVI_RX
I
Digital Voice interface (RX)
1.8V
D9
DVI_TX
O
Digital Voice interface (TX)
1.8V
