Universal Scientific MESSI-V User Manual

Doc. Title

MESSI-V M2 I/O APPLICATION

Originator

David Tsui

Concurrence

Achau Lee

Approved by

Version

Date

2013/08/08

MESSI-V M2 I/O APPLICATION

4G LTE Module
(NGFF type)

1/13 Rev1.2

Revision History

Rev

Draft/Changes

Date

1.0

First version released (DVT phase)

2013/01/10

2/13 Rev1.2

Introduction:

MESSI-V M2 is an advanced and compact NGFF board / module which supports
LTE category 3 (CAT-3) throughputs. MESSI-V M2 supports for UART, USB2.0,
USIM and antenna interface. The details of I/O interfaces are described in the
sections as followings:

 UART Interface
 USB2.0 Interface
 USIM Interface
 Power Input
 JTAG & Reset
 GPIO
 Antenna Interface
 Others

3/13 Rev1.2

Pin NO.

Pin name

Description

62

UART_RX

UART receive input

64

UART_TX

UART transmit output

1. UART Interface

MESSI-V M2 board supports one UART port for debugging and downloading. The baud
rate speed is up to 115200bps. Signal level is 3.3V. If MESSI-V M2 module goes
through standard RS-232 interface to connect with PC, It is recommended to use TI
TRS3253EIRSMR for best baud rate to catch log file and download boot loader setting.

Figure1-1: UART block diagram.

Figure1-2: RS-232 connection

4/13 Rev1.2