LN920 HW Design Guide
1VV0301730 Rev. 1
Page 12 of 81
2021-08-11
Not Subject to NDA
Function
Features
•
4Gb : x8 NAND with 2Gb : x32 LPDDR2 533MHz, 4bit
ECC 4K page
Interfaces
•
USB 2.0/3.0
–
USB port is typically used for:
o
Flashing of firmware and module configuration
o
Production testing
o
AT command access
o
High-speed WWAN access to external host
•
Peripheral Ports: I2C, GPIOs
•
Two USIM ports
–
dual voltage
•
Antenna ports (Cellular Main, Cellular Aux and GNSS)
Form factor
•
M.2 Form factor (30 * 42 * 2.3 mm), supporting multiple
RF bands
Environment and quality requirements
•
The device is designed and qualified by Telit to satisfy
environmental and quality requirements.
Single supply module
•
The module internally generates all its required
internal supply voltages.
RTC
•
Real-time clock is supported
Operating temperature
•
Range -40
°
C to +85
°
C
•
(conditions as defined in Section
Table 3: Functional Features
2.3.1.
Configuration Pins
Based on PCI Express M.2 Specification, LN920 has 4 configuration pins: they allow the
host to identify the presence of an LN920 data card in the M.2 socket and identify main
host interface and port configuration.
The state of
configuration
pins is as
follows: Pin
Signal
State
Interface Type
21
CONFIG_0
GND
USB 3.1 Gen1
Port Configuration 2
69
CONFIG_1
GND
75
CONFIG_2
NC
1
CONFIG_3
NC
Table 4: Configuration Pins
