XECOM XE3314C-ITR, XE3314C Datasheet

Loading...

XE3314C

5/2002

Worldwide 33.6 KBPS Modem Module for Embedded Applications

Description

Xecom's XE3314C is a complete, 33.6 Kbps modem in a single component. Xecom designed the XE3314C for use throughout North America, Europe and Japan. It includes user transferrable FCC Part 68 Registration for direct connection to telephone lines in the United States and is compliant with CTR21, the standard for pan-European telecommunications approval.

The XE3314C is a complete modem packaged in a compact module. The XE3314C includes all required modem circuits including the DAA. XE3314C users do not need to add RAM, ROM, Crystals, low distortion transformer, or switches to complete the modem design. The user only needs to provide the TTL level, serial interface and the telephone line connection.

Features

Meets telecom requirements for Europe, North America, and Japan: Includes User Transferrable FCC Part 68 Registration and CTR21 compliance

Small Size: 2.75 inches by 1.38 inches by 0.42 inches;

Modem Protocols for data transfer from 33.6 KBPS down to 300 BPS: V.34bis, V.34, V.32bis, V.32, V.22bis, V.22, V.21, Bell 212A and 103;

Modem Control and Configuration via AT Commands

Fax Protocols: V.17, V.29, V.27ter, and V.21 channel 2

Error Correction; V.42, MNP2-4 and MNP10

Data Compression; V.42bis and MNP5 provides a maximum effective data rate of 133,400 bps.

Non-Volatile Memory included for storing telephone numbers and modem configuration.

The XE3314C is pin compatible with Xecom's

Standard operating temperature range 0C to 70C.

XE1414C, modem. This family of modems permits a

Extended operating temperature range of -40C to +85C

simple upgrade path from 14,400 bps to 33,600 bps for

is available.

international embedded modem applications.

 

Serial I/O

Block Diagram

 

 

 

/DTR

 

 

/RTS

 

 

/CTS

 

 

/DSR

ROM

 

TXD

 

RXD

 

Tip

/DCD

Analog

Modem

Front

DAA

Controller

Ring

End

Auxiliary I/O

 

RESET

NVRAM

 

 

 

AR

 

 

LCS

 

 

OH

 

 

AMP

 

 

L1

 

 

L2

 

 

XECOM

(1)

XE3314C

XE3314C Mechanical Specifications

 

INCHES

METRIC(MM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PIN

MIN

MAX

MIN

MAX

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

A

2.74

2.760

69.60

70.10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

1.370

1.390

34.80

35.31

 

 

 

 

 

 

 

 

 

C

0.420

0.430

10.67

10.92

 

 

 

 

 

 

 

 

 

D

1.190

1.210

30.23

30.73

 

 

 

 

 

 

 

 

 

E

1.890

1.910

48.01

48.51

 

 

 

 

 

 

 

B

F

0.125

0.200

3.18

5.08

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

0.080

0.100

2.03

2.54

 

 

 

 

 

 

 

 

 

H

0.415

0.435

10.54

11.05

 

 

 

 

 

 

 

 

 

J

0.090

0.110

2.29

2.79

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K

0.020

0.025

0.51

0.64

 

 

 

 

 

 

 

 

 

Denotes Pin 1

Pins = 0.025 inch square pin; All pins tin-plated

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

J

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

H

 

 

 

 

 

 

 

 

 

 

 

 

E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XE3314C PIN CONFIGURATION

NC

1

40

VCC

AR

2

39

/DSR

RXD

3

38

/DCD

NC

4

37

NC

NC

5

36

RESET

NC

6

35

NC

NC

7

34

NC

NC

8

33

NC

/DTR

9

32

NC

LCS

10

31

NC

/CTS

11

30

OH

NC

12

29

NC

TXD

13

28

L2

/RTS

14

27

L1

NC

15

 

 

/RI

16

 

 

TIP

18

 

 

RING

20

22

AMP

21

GND

 

 

 

 

XECOM

(2)

XE3314C

XE3314C PIN DESCRIPTIONS

PIN

NAME

DESCRIPTION

 

 

 

1

NC

No Internal Connection

2

AR

Auxiliary Data/Voice Relay, Active High Output, TTL/CMOS. The AR signal goes high when ever the mo-

 

 

dem is in the on-hook state. It can be connected to an external relay to switch control of the telephone line

 

 

between the modem and an auxiliary handset when.

3

RXD

Received Data, Output, TTL. Serial data output to the host. A logic "High" on RXD represents a "mark"

 

 

and a logic "Low" represents a "space".

4-8

NC

No Internal Connection

9

\DTR

Data Terminal Ready, Input, active Low, TTL. The "AT&D" command sets the function of \DTR. The de-

 

 

fault, AT&D2, requires the host to assert \DTR to permit a modem link. The modem drops the call in

 

 

progress if \DTR is revoked and will not connect until \DTR is reasserted.

10

LCS

Loop Current Sense, input, active High, TTL/CMOS. LCS provides an input to the modem from an ex-

 

 

ternal loop current sensor. The Loop Current Sensor may be required for some applications in which the

 

 

modem shares a telephone line with a telephone handset.

11

\CTS

Clear to Send, Output, active Low, TTL/CMOS. \CTS provides the flow control output from the modem

 

 

when hardware flow control is selected. The modem revokes \CTS when the modem's input buffer is

 

 

full. The modem reasserts \CTS when the buffer can accept more data without a buffer overflow.

12

NC

No Internal Connection

13

TXD

Transmit Data, Input, TTL. Serial data input from the host. A logic "High" represents a "mark" and a

 

 

Low represents a "space", TTL.

14

\RTS

Request to Send, input, active Low, TTL. The XE3314C uses \RTS for hardware flow control. When

 

 

\RTS is revoked; hardware flow control is activated, and the modem will not place data on RXD.

15

NC

No Internal Connection

16

\RI

Ring Indicator, Output, active Low, TTL. When low indicates the modem is receiving a ring signal.

18

TIP

Tip connection to the phone line (RJ11 pin 3) from the internal DAA. The XE3314C is not sensitive to

 

 

the battery voltage polarity across Tip and Ring.

20

RING

Ring connection to the phone line (RJ11 pin 4) from the internal DAA.

21

GND

Ground (0 volts)

22

AMP

Audio Output function is set by L & M commands and the value in register S22. This output can drive a

 

 

minimum load of 300 ohms.

27-28

L1, L2

L1 and L2 provide the control the performance of the loop current holding circuit. When a jumper is applied

 

 

between L1 and L2, the CTR21 current limiting circuit is active and DC loop current is limited to 60

 

 

milliamps. When no jumper is provided, a full 100 milliamps of loop current is supported.

30

OH

Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed. Hookswitch closure

 

 

connects the modem to the telephone line.

31-35

N/C

No Internal Connection

36

RESET

Hardware reset pin, Input, active High, TTL. A high on Pin 36 initiates a hardware reset. An external reset

 

 

is not required or recommended. The Reset pulse must be held a minimum of 100 milliseconds.

37

N/C

No Internal Connection

 

 

 

XECOM

(3)

XE3314C

XE3314C PIN DESCRIPTIONS

 

PIN

NAME

DESCRIPTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

38

\DCD

Data Carrier Detect, Output Active Low, TTL/CMOS. The &C command sets the function of \DCD. In the

 

 

 

default state \DCD activates when a valid carrier is detected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39

\DSR

Data Set Ready, Output, active Low, TTL/CMOS. &S sets the \DSR function. In the default condition, AT&S0,

 

 

 

\DSR is forced true.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

Vcc

+5 Volts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XE3314C ABSOLUTE MAXIMUM RATINGS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUPPLY VOLTAGE - Vcc

 

 

 

 

 

 

 

 

 

 

 

 

 

+6.5 Volts

 

 

 

DC INPUT VOLTAGE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-0.6 Volts to +6.5 Volts

 

 

STORAGE TEMPERATURE RANGE

 

 

 

 

 

 

 

 

 

 

 

 

 

-25° C TO +85° C

 

 

LEAD TEMPERATURE (Soldering, 2 sec per wave)

 

 

 

 

 

 

 

260° C

 

 

OPERATING TEMPERATURE RANGE 1

 

 

 

 

 

 

 

 

 

 

 

 

 

0 TO 70° C

 

*Exceeding these values may result in permanent damage to the device.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 Extended Operating Temperature (-40° to +85° C) available. Order XE3314C-ITR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XE3314C ELECTRICAL SPECIFICATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

 

 

 

Min

 

 

Typ

 

 

 

Max

 

Units

 

 

 

Comments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VCC

 

 

4.75

 

 

 

 

 

 

 

 

 

 

 

 

5.25

 

 

 

Volts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ICC

 

 

140

 

 

 

 

160

 

 

 

 

 

180

 

 

 

 

ma

 

 

 

On Line

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

ma

 

 

 

Sleep Mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ring Voltage Detected

38

 

 

 

 

 

 

 

 

 

 

 

 

 

150

 

 

 

 

RMS

 

 

 

Type B Ringer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ring Frequency Detected

15.3

 

 

 

 

 

 

 

 

 

 

 

 

68

 

 

 

 

Hz

 

 

 

Type B Ringer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Telephone Loop Current

20

 

 

 

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

ma

 

 

 

Off-Hook

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Data Transmit level

-11.0

 

 

 

 

-10.0

 

 

 

 

-9.0

 

 

 

 

dBm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTMF Transmit Level

 

 

 

 

 

 

 

 

 

-2.5

 

 

 

 

 

0

 

 

 

 

 

dBm

 

 

 

Avg over 3 second interval

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XECOM

(4)

XE3314C

XE3314C Typical Connection Diagram

 

 

 

 

 

 

 

 

/RXD

 

 

 

 

 

L1

XE3314C

/TXD

 

 

 

 

 

 

 

/DTR

16C550

 

 

 

 

 

 

/RTS

 

 

 

 

L2

 

/CTS

UART

 

 

 

 

 

/DSR

 

 

 

 

 

 

 

/DCD

 

 

 

 

 

 

 

/RI

 

 

 

 

FB1

Ring

 

.2 ufd

 

 

J1

 

AMP

 

 

 

 

 

 

GND

 

 

 

 

 

Tip

 

 

 

 

C1

FB2

 

 

50K

 

250 ufd

 

 

 

LM386

C2

 

 

 

 

8 ohm,

 

 

 

 

 

 

.05 ufd

 

 

 

 

 

 

.5 W

 

 

 

 

 

 

 

 

 

 

 

 

 

10 ohms

speaker

Recommended Parts

Reference Designation

Description

Recommended Part Number

 

 

FB1, FB2

Ferrite Beads

TDK ACB2012L-120-X

 

 

C1, C2

Capacitors

Panasonic ECKDRS471, 470 pfd, 2600 Volts

 

 

J1, J2

RJ11 Jack

Stewart SS6446NF

 

 

 

 

 

Notes: 1) RJ11 Pin assignments reflect a 6-pin connector. Tip and Ring are always the center pins of the RJ11 Jack.

2)CTR21 requires the modem to be able to dissapate over two Watts in come applications where the integral current limiting circuit is activated. The XE3314C requires a heat sink to be added to dissapte this additional power.

XECOM

(5)

XE3314C

Country Selection

Xecom has designed the XE3314C to the Telephone standards of a wide variety of countries throughoput the world. Below is a list of the country standards which Xecom has found the XE3314C to comply. Please contact Xecom if you have questions regarding a country not on this list.

Countries Supported:

 

COUNTRY

AT COMMAND

Austria

AT+GCI=0A

Belgium

AT+GCI=0F

Denmark

AT+GCI=31

Finland

AT+GCI=3C

France

AT+GCI=3D

Germany

AT+GCI=42

Greece

AT+GCI=46

Holland

AT+GCI=7B

Ireland

AT+GCI=57

Italy

AT+GCI=59

Japan

AT+GCI=00

Korea

AT+GCI=B5

Norway

AT+GCI=82

Portugal

AT+GCI=8B

Singapore

AT+GCI=B5

Spain

AT+GCI=A0

Sweden

AT+GCI=A5

Switzerland

AT+GCI=A6

Taiwan

AT+GCI=B5

United Kingdom

AT+GCI=B4

United States

AT+GCI=B5

NOTE: Country regulations permit Xecom to offer transferrable registration only in the United States, FCC Part 68 only. All other required certifications of systems using the XE3314C are the responsibility of Xecom’s customer. Xecom will assist our customers with any of these certifications.

XECOM

(6)

XE3314C

+ 12 hidden pages