MEIG SLM 320, Design Manual

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MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd 8/89
LTE Characteristic

The maximum support CAT1 Bis

Support 1.4 ~ 20 MHZ radio frequency bandwidth

FDD
：
The maximum UL rate is 5Mbps, and the maximum
DL rate is 10Mbps

TDD
：
He maximum UL rate is 2Mbps, and the maximum
DL rate is 8Mbps
GSM character

CSD transmission rate: 9.6 KBPS, 14.4 KBPS

Support GPRS multi - slot class 12 (the default is 12)

Coding formats: / CS-1/CS -2/CS --3 and CS - 4

Maximum 4 RX slots per frame
Network protocol features

Embedded TCP/IP and UDP/IP protocol stack
Short Message service
（
SMS
）

Text and PDU mode

point-to-point MO and MT

Short Message storage: stored in the SIM card by default

Cell broadcast
GNSS character

Cold start time<40S

Hot start time<5S

Tracking sensitivity-160dBm

Acquisition sensitivity-147dBm

Position accuracy<3m

GNSS Data type
：
NMEA-0183
USIM Port

Support USIM/SIM
：
1.8Vand3V
Audio Features

Support 1 channel digital audio interface
：
PCM port

Support analog MIC signal input interface all the way

Support one loudspeaker signal output interface
（
0.8W@4.2V /D
，
0.6W@4.2V/AB
）
PCM Interface

For audio use, external CODEC chip is required
USB
Interface

Support USB2.0

To the AT command, data transmission, software
debugging and software upgrades

USB drive
：
Support Windows7
，
Windows 8/8.1
，
Windows10
Serial
Interface
The serial port
：

To AT commands and data transmission

Baud rate is default 115200bps

Support RTS and CTS hardware flow control
DBG Port
：

To develop debug, the log output

Baud rate is default115200bps
SD
Interface

Conforms to SD3.0 protocol
AT Commands

Comply with 3GPP TS 27.007, 27.005, and MeiG
enhanced AT command
Network Indicator

NET_STATUS
，
NET_MOD these two pins indicate the
state of the network