Telit Wireless Solutions LM940 Design Guide

LM940 Hardware Design Guide
1VV0301352 Rev. 18 Page 18 of 75 2022-01-04
Not Subject to NDA
3. PINS ALLOCATION
Pin-Out
Note: The main difference between LM940 1.0 and LM940 2.0 is the
pin-out.
Pins highlighted in Blue show that these pins are assigned differently
to LM940 1.0 and LM940 2.0.
Otherwise, they support same features and functions.
3.1.1. LM940 1.0 Pin-Out
Pin
Signal
I/O
Function
Type
Comment
USB HS 2.0 Communication Port
38
USB_D+
I/O
USB 2.0 Data Plus
Analog
36
USB_D-
I/O
USB 2.0 Data Minus
Analog
USB SS 3.0 Communication Port
25
USB_SS_TX_P
O
USB 3.0 super-speed transmit – plus
Analog
23
USB_SS_TX_M
O
USB 3.0 super-speed transmit –
minus
Analog
33
USB_SS_RX_P
I
USB 3.0 super-speed receive – plus
Analog
31
USB_SS_RX_M
I
USB 3.0 super-speed receive – minus
Analog
SIM Card Interface 1
8
SIMVCC1
O
Supply output for an external UIM1
card
1.8V / 2.85V
Power
10
SIMIO1
I/O
Data connection with an external
UIM1 card
1.8V / 2.85V
12
SIMCLK1
O
Clock output to an external UIM1 card
1.8V / 2.85V
14
SIMRST1
O
Reset output to an external UIM1 card
1.8V / 2.85V
SIM Card Interface 2
13
SIMVCC2
O
Supply output for an external UIM2
card
1.8 / 2.85V
Power
19
SIMIO2
I/O
Data connection with an external
UIM2 card
1.8 / 2.85V

Telit Wireless Solutions LM940 Specifications

General

Brand	Telit Wireless Solutions
Model	LM940
Category	Wireless modules
Language	English