User's Manual
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
EAR1_MT+ AO Earphone signal output1, phase + Audio
A4
EAR1_MT- AO Earphone signal output1, phase - Audio
B3
MIC1_MT+ AI Mic signal input1, phase + Audio
A2
MIC1_MT- AI Mic signal input1, phase - Audio
E2
EAR2_MT+ AO Earphone signal output2, phase + Audio
D1
EAR2_MT- AO Earphone signal output2, phase - Audio
C2
MIC2_MT+ 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