Multi-Tech Systems 92U03G23720 ユーザーズマニュアル

Chapter 3 – Electrical Characteristics

Wireless ModemModule MTMMC-G-F1 and MTMMC-G-F2 Developer’s Guide

    

1

GND

GROUND

High current

2

GND

GROUND

High current

3

+5V

Supply

High current

4

+5V

Supply

High current

5

CT109/DCD

O

CMOS/2X

Data Carrier Detect

6

GND

GROUND

High current

7

GPI04

I/O

CMOS/2X

General Purpose I/O

8

SPK2N

O

Analog

Speaker 2 negative output

9

CT125/RI

O

CMOS/2X

Ring Indicator

10

SPK2P

O

Analog

Speaker 2 positive output

11

Flashing LED

I/O

CMOS/2X

Working mode indication
LED

Driven by
module

12

SPK1P

O

Analog

Speaker 1 positive output

13

CT106/CTS

O

1X

Clear to Send

14

SPK1N

O

Analog

Speaker 1 negative output

15

ON/~OFF

I

Power ON/OFF control

ON = Vcc

16

MIC2P

I

Analog

Microphone 2 positive
input

17

AUXV0

I

Analog

Auxiliary ADC input

18

MIC2N

I

Analog

Microphone 2 negative
input

19

~RST

I

Reset active low

Open Collector

20

MIC1P

I

Analog

Microphone 1 positive
input

21

GND

I

Ground

22

MIC1N

I

Analog

Microphone 1 negative
input

23

BOOT

I

BOOT

Open Collector

24

GND

GROUND

High Current

25

CT103/TX

I

Transmit Data

Pull up with
100K-ohm
when not used