Cinterion
®
ELS31-VA/ELS51-VA Hardware Interface Description
1.1 Key Features at a Glance
13
ELS31-VA_ELS51-VA_HID_v01.000
2017-01-04
Confidential / Preliminary
Page 10 of 106
Interfaces
Module interface
Surface mount device with solderable connection pads (SMT application
interface). Land grid array (LGA) technology ensures high solder joint reli-
ability and allows the use of an optional module mounting socket.
For more information on how to integrate SMT modules see also
application note comprises chapters on module mounting and application
layout issues as well as on SMT application development equipment.
USB
USB 2.0 High Speed (480Mbit/s) device interface, Full Speed (12Mbit/s)
compliant
2 serial interfaces
ASC0:
•
8-wire modem interface with status and control lines, unbalanced, asyn-
chronous
•
Default baud rate: 115,200 baud
•
Adjustable baud rates: 4,800 to 921,600, no autobauding support
•
Supports RTS0/CTS0 hardware flow control.
•
Indication of incoming data/SMS on RING0 (can be used to wake up
host from power down modes)
ASC1 (shared with GPIO lines):
•
4-wire, unbalanced asynchronous interface
•
Default baud rate: 115,200 baud
•
Adjustable baud rates: 4,800bps to 921,600bps
•
Supports RTS1/CTS1 hardware flow control
UICC interface
Supported SIM/USIM cards: 3V, 1.8V
Embedded UICC
Module is prepared for an embedded UICC
GPIO interface
20 pads of the application interface programmable as GPIO pads (17) or
GPO pads (3):
GP(I)Os can be configured as COUNTER, FST_SHDN, ASC0, ASC1, SPI,
and DAI signal lines
Programming is done via AT commands
I
2
C interface
Supports I
2
C serial interface
SPI interface
Supports SPI interface
SDIO
ELS51-VA only:
4 wire interface.
HSIC
ELS51-VA only:
High Speed Interchip Communication interface.
ADC
Analog-to-Digital Converter with one unbalanced analog input.
Digitial audio interface
4 GPIO lines can be configured as PCM/I
2
S lines for VoLTE communica-
tion.
Antenna interface pads
50
Ω
LTE main antenna, 50
LTE diversity antenna
Feature
Implementation