User's Manual

LE920A4 HW User Guide General Product Description
Doc#: 1VV0301261 General Functionality and Main Features
Rev. 4.3 Page 13 of 123 2017-12-07
General Functionality and Main Features
The LE920A4 family of automotive cellular modules features an advanced LTE and multi-
RAT modem together with a powerful on-chip application processor and a rich set of
interfaces.
The major functions and features are listed below:
Table 3: Main Features
Function Features
Modem
• Multi-RAT cellular modem for voice and data communication
o LTE FDD/TDD Cat4 (150/50 Mbps DL/UL)
o GSM/GPRS/EDGE
o WCDMA up to DC HSPA+, Rel.9
o TD-SCDMA (China variant only)
• Support for European eCall , US E911, and ERA Glonass
• Support for SIM profile switching
• Regional variants with optimal choice of RF bands for
worldwide coverage of countries and MNOs
• State-of-the-art GNSS solution with
GPS/GLONASS/BeiDou/Galileo/QZSS receiver
Audio
subsystem
• Embedded analog codec with two microphone inputs
• Embedded analog codec with one stereo or two mono
outputs
• PCM/I2S digital audio interface
•
Up to 48
kHz sample rate, 16 bit words
Two USIM ports
– dual voltage
• Class B and Class C support
• Hot-swap support
•
Data rates up to 4 MHz
Application
processor
Application processor to run customer application code
• 32 bit ARM Cortex-A7 up to 1.2 GHz running the Linux
operating system
• Flash + DDR are large enough to allow for customer’s own
software applications
• Default memory configuration is 4 Gb (512 MB) Flash + 2 Gb
(256 MB) RAM
• Other memory configurations can be supported upon request,
for example: 2 Gbit Flash + 2 Gbit DDR or 4 Gbit Flash +
4
Gbit DDR.