Cermetek DataSheet for product XE5620G

XE5620G

September 2003

Smallest World-Wide 56 KBPS Modem

Description

Features

Xecom’s XE5620G simplifies integration of dial-up

* Small Size: The HyPLCC™ measures less than 1 inch

communications into embedded systems. It offers a

by 1 inch square and 0.350 inches thick

single modem solution for use throughout the world,

* Surface-mountable: The HyPLCC™ package is

and its PLCC package allows the XE5620G to fit in the

equivalent to a 68-Pin PLCC device.

tightest system layout. It is a breakthrough for the

* Data transfer at all rates from 300 BPS to 56 KBPS

embedded system designer.

using V.90,V.34bis,V.34,V.32bis,V.32,V.22bis,V.22,

V.23,V.21,Bell212A,andBell103Protocols

The XE5620G offers unprecidented design flexibility.

* Modem Control and Configuration via industry

It offers a common communications solution for

standard AT Commands.

countries around the world, and the Hybrid PLCC

* Supports V.42 error correction and V.42bis data

package (HyPLCC™) is both the smallest complete

compression.

modem and the only surface mount modem you can

* Nonvolatile memory stores modem configuration and

buy. The XE5620G fits a 68-Pin PLCC socket and

permits stored number dialing.

therefore can be mounted in a socket or soldered onto

* Incorporates Fax send and receive capabilities

the board. As the world’s smallest complete modem,

controlled by Class 1 Fax commands.

you can place the XE5620G where no other modem

will fit.

* Complete integrated DAA includes, Ring Detect,

Loop Current Holding Circuit, Hook Switch. Metallic

The surface mount package and small size of the

Surge Protection, and Solid-State DAA

XE5620G are particularly impressive when you realize

* User Transferrable FCC Part 68 Registration

it is a complete modem. The DAA, RAM, ROM,

* Complies with telephone networks around the world.

Crystal; everything is included. The XE5620G even

* UL60950Recognition

includes transferrable FCC Part 68 Registration. No

* Low Power operation, 3.3Volts, 300 milliwatt;

further testing is required for US applications

XE5620G BLOCK DIAGRAM

NVRAM

/Reset

/TXD

/RXD

/RTS

Modem

Global

/DSR

Controller

Analog

Tip

Telephone

/DCD

Front

Line

Ring

/CTS

End

Interface

/DTR

/RI

(DAA)

SPKR

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XE5620G

XE5620G Mechanical Specifications

(TOP)

.050”

45 O

Inches

Millimeters

Dimension

Min

Typ

Max

Min

Typ

Max

0.345

0.350

0.355

8.76

8.89

9.02

0.985

0.990

0.995

25.02

25.15

25.27

0.950

0.955

0.960

24.13

24.26

24.38

0.910

0.920

0.930

23.11

23.37

23.62

0.045

0.050

0.055

1.15

1.27

1.40

0.695

0.700

0.705

17.65

17.78

17.91

0.195

0.200

0.205

10.03

10.16

10.29

i(radius)

0.015

0.020

0.025

0.13

0.25

0.38

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XE5620G

XE5620G Pin Configuration

/DCD

/CTS

/RESET

/DSR

RING

/RTS

N/C

/DTR

TIP

/RXD

N/C

/TXD

TOP

N/C

/RI

GND

SPKR

N/C

Vcc

N/C

Pin Descriptions

PIN NAME

DESCRIPTION

/DCD

/DCD is an active low output from the modem. It can be used to indicate the presence of a

valid carrier signal. The AT&C command controls when the XE5620G asserts /DCD.

/CTS

/CTS is an active low output from the modem. When hardware flow control is active, the

modem asserts /CTS to indicate that it can accept data from the terminal equipment on /TXD.

/RESET

/RESET is an active low input which initiates a modem hardware reset. /RESET must be active for

a minimum of 100 milliseconds for a proper modem reset sequence. No external reset is required;

if none is used the /RESET signal should be left open.

/DSR

/DSR is an active low output from the modem. /DSR can be used to indicate that the modem

link is established. The AT&S command controls when the XE5620G asserts /DSR.

/RTS

/RTS is an active low input to the modem. When hardware flow control is active, /RTS indicates

to the modem that the host has data to send.

/DTR

/DTR is an active low input to the modem. /DTR can be used to indicate that the terminal is

availble for communications. The AT&D command determines how the modem will interpret

activity on /DTR.

/RXD

/RXD provides the path for received data and modem responses to be sent from the modem to

the host terminal equipment.

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XE5620G

XE5620G Pin Descriptions (continued)

PIN NAME

DESCRIPTION

/TXD

/TXD provides the path for transmitted data and modem commands to be passed from the host

terminal equipment to the modem.

/RI

The /RI signal reports on the presence of an incoming ring signal. When a ring occurs across

Tip and Ring, the /RI output goes low and toggles with the cadence of the ring signal..

Ground

Ground provides the reference voltage for all host interface signals.

SPKR

SPKR allows connection of a speaker to monitor modem operations. SPKR cannot directly

drive a speaker. An amplifier with a minimum input impedance of 300 ohms is required. The

signal on SPKR is controlled by the ATL and ATM commands.

12-13

N/C

No internal connection

VCC

VCC provides 3.3 volt power to the modem.

N/C

No Internal Connection

16-19

No Pin

20-21

N/C

No Internal Connection

Tip

The Ring and Tip signals provide modem the connection to the telephone line. FCC Part 68

Rules require a 1500 volt isolation barrier between the telephone line and all other circuits.

This isolation must be preserved throughout the system.

The telephone company places a DC “Battery” voltage acrossTip and Ring on all public switched

telephone lines. The XE5620G will operate regardless of the polarity of this “Battery” voltage.

The “Battery” voltage drives up to 100 milliamps of DC loop current.

UL60950 requires minimum creepage and clearances distances be maintained between the

Tip and Ring traces and all other circuits. Clearance is the shortest distance between conductive

circuits; creepage is the distance between conductive surfaces along the surface

N/C

No internal connection, To prevent damage in case of voltage surges on the telephone line, we

recommend that nothing be connected to this pin.

Ring

The Ring and Tip signals provide modem the connection to the telephone line. FCC Part 68

Rules require a 1500 volt isolation barrier between the telephone line and all other circuits.

This isolation must be preserved throughout the system.

The telephone company places a DC “Battery” voltage acrossTip and Ring on all public switched

telephone lines. The XE5620G will operate regardless of the polarity of this “Battery” voltage.

The “Battery” voltage drives up to 100 milliamps of DC loop current.

UL60950 requires minimum creepage and clearances distances be maintained between the

Tip and Ring traces and all other circuits. Clearance is the shortest distance between conductive

circuits; creepage is the distance between conductive surfaces along the surface.

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XE5620G

XE5620G Soldering Instructions

The XE5620G is subject to damage if over-exposed to heat during solder reflow operations. Following the

soldering instructions below will ensure that the process of soldering the module to the board does not damage

the modem. The XE5620G must not be exposed to direct Infrared (IR) heating. If your process includes direct

IR heating, you must shield the XE5620G from the infrared rays.

Maximum Temperature

220 O C

Maximum Time at 220 O C

20 Seconds

Maximum Time above Eutectic (180 O C)

90 Seconds

Maximum Preheat Dwell Time

180 Seconds

Maximum Recommended Solder Temperature Profile

220 O C

180 O C

150 O C

-20 sec-

--------------------------------180secmax---------------------

max

----- 90 sec max -----

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XE5620G

XE5620G Electrical Specifications

Parameter

Min

Typ

Max

Units

Comments

VCC

3.13

3.3

3.47

Volts

ICC

100

On Line

ICC

On-Hook

Ring Voltage Detected

150

VRMS

Type B Ringer

Ring Frequency Detected

15.3

Type B Ringer

Telephone Loop Current

100

Line Impedance

600

Ohms

Data Transmit level

-12.0

-9.0

dBm

DTMF Transmit Level

-2.5

dBm

Avg over 3 second interval

Voh

2.4

Volts

Vol

0.4

Volts

Vih

2.0

VCC+0.3

Volts

Vil

-0.3

0.8

Volts

XE5620G ABSOLUTE MAXIMUM RATINGS

Storage Temperature

-25 O C to +85 O C

Operating Temperature Range 1

0 O C to +70 O C

Maximum Time Above Eutectic (183 O C)

90 seconds

PreheatDwellTime

120 to 180 seconds

1 The XE5620G can be ordered with an Operating Temperature of -40 O C to +85 O C at extra cost. Order XE5620G-ITR or

to specify Industrial Temperature Range (ITR).

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XE5620G

XE5620G Typical Connection Diagram

To Host Serial Port

XE5620G

(1) /DCD

(2) /CTS

RJ11

(3) Reset

(4) /DSR

RING (24)

(5) /RTS

N/C (23)

(6) /DTR

TIP (22)

(7) /RXD

N/C (21)

(8) /TXD

N/C (20)

(9) /RI

NP (19)

(10) GND

NP (18)

(11) SPKR

NP (17)

(12) N/C

NP (16)

VCC

(13) N/C

(14) VCC

(15) N/C

LS1

Parts List for XE5620G Typical Connection Diagram

Reference

Designation

Qty

Description

Designation

Qty

Description

C1,C2

Cap.470pfd2600V

NationalSemiLM386

C3,C4

Cap. 0.1 ufd 20% 16V

LS1

Speaker, 8 Ohms

Cap.100ufd20%10V

Potentiometer,10K

F1,F2

PTC,TR600-150

Resistor, 10 Ohms 20 %

Notes:

C1 and C2 are high-voltage capacitors which may be required for EMI filtering in your system. Without these

components you may experience unintended radiation when the telephone cable is attached to your system. We

recommend selecting components such as the Panasonic ECKDRS471. This 470 pfd, 3000 volt capacitor will

direct the high frequency harmonics to the system ground. These capacitors must be rated at a minimum of 1500

volts to maintain the isolation required by FCC Part 68 Rules.

2. F1 and F2 are positive thermal coefficient (PTC) devices which protect the modem form excessive current flow.

These devices are required for your system to pass UL60950. Fuses may be used in place of the PTC’s

3. The XE5620G includes internal circuitry to protect the modem from damage due to lightning strikes. However,

any components placed on the Tip and Ring traces will not be protected. If you add any components between

the phone jack and modem module, a surge protector such as the Teccor P3100BA Sidactor should be placed

before these components to protect them from lightning damage.

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XE5620G

Application Note: Using a 68-Pin PLCC Socket

The XE5620G can be inserted into a socket for a 68-pin PLCC device. The HyPLCC package uses only 20 pins;

15 on one side and 5 on the opposite side. Alignment within the socket is critical for all pins of the XE5620G to

make contact with the appropriate pins of the PLCC socket. The drawing below illustrates how the XE5620G can

be inserted into the 68-pin PLCC socket. Emulation Technology’s S-SMT-17-068-A socket is representative of

sockets that can be sued with the XE5620G.

XE5620G

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XE5620G

Country Selection

Xecom has designed the XE5620G to function in a wide variety of countries throughout the world.

Below is a list of the available country configurations. Please contact Xecom if you have questions

regarding a country not on this list.

CountriesSupported:

COUNTRY

AT COMMAND

COUNTRY

AT COMMAND

Australia

AT*NC40

Lichtenstein

AT*NC29

Austria

AT*NC1

Luxembourg

AT*NC9

Belgium

AT*NC2

Namibia

AT*NC26

Czech Republic

AT*NC19

Norway

AT*NC11

Denmark

AT*NC3

Poland

AT*NC24

Finland

AT*NC4

Portugal

AT*NC12

France

AT*NC5

Russia

AT*NC25

Germany

AT*NC6

South Africa

AT*NC27

Greece

AT*NC17

Spain

AT*NC13

Holland

AT*NC10

Sweden

AT*NC14

Iceland

AT*NC28

Switzerland

AT*NC15

India

AT*NC18

Taiwan

AT*NC20

Ireland

AT*NC7

United Kingdom

AT*NC16

Italy

AT*NC8

United States

AT*NC22

Japan

AT*NC43

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 XE5620G are the

responsibility of Xecom’s customer.

Xecom will assist our customers with any of these

certifications.

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XE5620G

XE5620G AT Commands

The XE5620G uses "AT" commands for configuration

Command Line - Commands may be strung together in

and control. This section describes the AT command

a single command line of up to 36 characters. Com-

format and lists the AT commands, Registers and Result

mands are executed in the sequence they appear. Spaces

codes. XE5620G "AT" commands have two operational

may be inserted into the command line but do not fill

modes; Command Mode, Data Mode and FAX mode.

space in the command buffer. A carriage return termi-

nates the command line and causes the commands to be

Data Mode: The XE5620G enters data mode after it

executed.

connects to a remote modem and issues the appropriate

character other than a carriage return to terminate the

result code. In the Data Mode the modem sends all data

command line.

presented on Transmit Data (/TXD) to the remote

modem and puts data from the remote modem onto

Command Buffer - The Command Buffer holds a

Received Data (/RXD). When the modem exits data

maximum of 36 characters, including the AT prefix. If

mode, it issues a "NO CARRIER" result code.

the command buffer overflows, the modem issues an

"ERROR" result code and commands are not executed.

Command Mode: The XE5620G enters command

mode on power-up, reset, a lost connection, or receipt

Command Line Editing -

The backspace edits a

of the escape code.

In command mode the modem

command line before it is executed. The backspace key,