User's Guide

LE910Cx Hardware User Guide

1VV0301298 Rev. 1.01 - 2016-02-16

Telit Confidential Information, provided under NDA Page 69 of 114

8.2. HSIC Interface

The application processor exposes a High-Speed Inter-Chip (HSIC). HSIC eliminates the analog

transceiver from a USB interface for lower voltage operation and reduced power dissipation.

 High-speed 480 Mbps (240 MHz DDR) USB transfers are 100% host driver compatible with

traditional USB cable connected topologies

 Bidirectional data strobe signal (STROBE)

 Bidirectional data signal (DATA)

 No power consumption unless a transfer is in progress

Further details will be provided in a future release of this document.

8.3. SGMII Interface (optional)

The SOC optionally includes an integrated Ethernet MAC with an SGMII interface, having the

following key features:

 The SGMII interface can be used connect to an external Ethernet PHY, or an external switch.

 When enabled, an additional network interface will be available to the Linux kernel’s

router.

Further details will be provided in a future release of this document.

8.4. Serial Ports

The serial port is typically a secondary interface between the LE910Cx module and OEM hardware.

Two serial ports are available on the module:

 MODEM SERIAL PORT 1(Main)

 MODEM SERIAL PORT 2 (Auxiliary)

Several configurations can be designed for the serial port on the OEM hardware. The most common

are:

 RS232 PC com port

 Microcontroller UART @ 1.8V (Universal Asynchronous Receive Transmit)

 Microcontroller UART @ 3.3V/5V or other voltages different from 1.8V

Depending on the type of serial port on the OEM hardware, a level translator circuit may be needed

to make the system operate. The only configuration that does not need level translation is the 1.8V

UART.

The levels for LE910Cx UART are the CMOS levels as described in Section 4.3, Logic Level

Specifications.