Datasheet XE5620G-ITR, XE5620G Datasheet (XECOM)

XECOM (1) XE5620G

XE5620G

August 2002

Smallest World-Wide 56 KBPS Modem

Description

Xecom’s XE5620G simplifies integration of dial-up
communications into embedded systems. It offers a
single modem solution for use throughout the world,
and its PLCC package allows the XE5620G to fit in the
tightest system layout. It is a breakthrough for the
embedded system designer.

The XE5620G offers unprecidented design flexibility.
It offers a common communications solution for
countries around the world, and the Hybrid PLCC
package (HyPLCC™) is both the smallest complete
modem and the only surface mount modem you can
buy. The XE5620G fits a 68-Pin PLCC socket and
therefore can be mounted in a socket or soldered onto
the board. As the world’s smallest complete modem,
you can place the XE5620G where no other modem
will fit.

The surface mount package and small size of the
XE5620G are particularly impressive when you realize
it is a complete modem. The DAA, RAM, ROM,
Crystal; everything is included. The XE5620G even
includes transferrable FCC Part 68 Registration. No
further testing is required for US applications

Features

* Small Size: The HyPLCC™ measures less than 1

inch by 1 inch square and 0.350 inches thick

* Surface-mountable: The HyPLCC™ package is

equivalent to a 68-Pin PLCC device.

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

using V.90, V.34bis, V.34, V.32bis, V.32, V.22bis,
V.22, V.23, V.21, Bell 212A, and Bell 103 Protocols

* Modem Control and Configuration via industry

standard A T Commands.

* Nonvolatile memory stores modem configuration

and permits stored number dialing.

* Incorporates Fax send and receive capabilities

controlled by Class 1 Fax commands.

* Complete integrated DAA includes, Ring Detect,

Loop Current Holding Circuit, Hook Switch.
Metallic Surge Protection, and Solid-State DAA

* User Transferrable FCC Part 68 Registration

(pending)

* Compliant with telecom requirements around the

world.

* UL60950 Recognition (pending)
* Low Power operation, 3.3 Volts, 300 milliw att;

XE5620G BLOCK DIAGRAM

XECOM (2) XE5620G

XE5620G Mechanical Specifications

a

b

c

d

c

f

g

e

e

45

O

i

(TOP)

Inches Millimeters

Dimension Mi n T yp Max Mi n Typ Max

a 0.345 0.350 0.355 8.76 8.89 9.02
b 0.985 0.990 0.995 25.02 25.15 25.27
c 0.950 0.955 0.960 24.13 24.26 24.38
d 0.910 0.920 0.930 23.11 23.37 23.62
e 0.045 0.050 0.055 1.15 1.27 1.40

f 0.695 0.700 0.705 17.65 17.78 17.91

g 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

i

i

.050”

XECOM (3) XE5620G

XE5620G Pin Configuration

Pin Descriptions

PIN NAME DESCRIPTION

1 /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.

2 /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.

3 RESET RESET is an active high 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.

4 /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.

5 /R TS /R TS 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.

6 /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.

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

the host terminal equipment.

/DCD 1

/CTS 2

RESET 3

/DSR 4 24 RING

/RTS 5 2 3 N/C
/DTR 6 22 TIP
/RXD 7 2 1 N/C

/TXD 8 2 0 N/ C

/RI 9 19 NP

GND 10 18 NP

SPKR 11 17 NP

N/C 12 16 NP
N/C 13

Vcc 1 4

N/C 15

TOP

XECOM (4) XE5620G

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

terminal equipment to the modem.

9 /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..
1 0 Ground Ground provides the reference voltage for all host interface signals.
11 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

1 4 VCC VCC provides 3.3 volt power to the modem.
1 5 N/C No Internal Connection

16-19 NP No Pin
20-21 N/C No Internal Connection

2 2 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 across Tip 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
23 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.
2 4 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 across Tip 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.

XE5620G Pin Descriptions (continued)

PIN NAME DESCRIPTION

XECOM (5) 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 220O C

Maximum Time at 220O C 20 Seconds

Maximum Time above Eutectic (180O C) 90 Seconds

Maximum Preheat Dwell Time 180 Seconds

Maximum Recommended Solder T emperature Pr ofile

220O C

180O C

150O C

-20 sec-

--------------------------------180 sec max --------------------- max

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

XECOM (6) XE5620G

XE5620G Electrical Specifications

VCC 3.13 3.3 3.47 Volts
ICC 85 90 100 ma On Line
ICC 2 5 ma On-Hook
Ring Voltage Detected 2 6 15 0 VRMS Type B Ringer
Ring Frequency Detected 15.3 68 Hz Type B Ringer
Telephone Loop Current 1 0 4 0 1 0 0 ma
Line Impedance 600 Ohms
Data Transmit level -12.0 -9.0 dBm
DTMF Transmit Level -2.5 0 dBm Av g 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

Parameter Min Typ Max Units Comments

XE5620G ABSOLUTE MAXIMUM RA TINGS

Storage Temperature -25O C to +85O C

Operating T emperature Range

1

0O C to +70O C

Maximum Time Above Eutectic (183O C) 90 seconds

Preheat Dwell Time 120 to 180 seconds

1

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

XECOM (7) XE5620G

XE5620G Typical Connection Diagram

Notes:

1 FB1 and FB2 are ferrite beads which may be required for EMI filtering in your system. Without these

components you may experience unintended radiation when the telephone cable is attached. We recommend
selecting components such as the TDK ACB2012L-120 which provide a minimum of 100 ohms of impedance
at frequencies above 100 MHz.

2. 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. W e
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.

3. 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

Parts List for XE5620G T ypical Connection Diagram

Reference Reference
Designation Qty Description Designation Qty Description

C1, C2 2 Cap. 470 pfd 2600V U1 1 National Semi LM386
C3, C4 2 Cap. 0.1 ufd 20% 16V LS1 1 Speaker, 8 Ohms
C5 1 Cap. 100 ufd 20% 10V R1 1 Potentiometer, 10K
FB1, FB2 2 Ferrite, TDK ACB2012L-120 R2 1 Resistor, 10 Ohms 20 %
F1, F2 2 PTC, TR600-150

XE5620G

XECOM (8) 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.

60 44

61 43

1

927

10 26

XE5620G

1
2
3
424
523
622
721
820

919
10 18
11 17
12 16
13
14
15

XECOM (9) 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.

Countries Supported:

COUNTRY AT COMMAND

Australia A T*NC40

Austria A T*NC1

Belgium AT*NC2

Czech Republic AT*NC19

Denmark AT*NC3

Finland AT*NC4

France AT*NC5

Germany AT*NC6

Greece AT*NC17

Holland AT*NC10

Iceland AT*NC28

India AT*NC18

Ireland AT*NC7

Italy AT*NC8

Japan AT*NC43

COUNTRY AT COMMAND

Lichtenstein AT*NC29
Luxembourg A T*NC9

Namibia A T*NC26

Norway A T*NC11

Poland A T*NC24

Portugal AT*NC12

Russia AT*NC25

South Africa AT*NC27

Spain AT*NC13

Sweden AT*NC14

Switzerland AT*NC15

T aiwan AT*NC20

United Kingdom AT*NC16

United States AT*NC22

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.

XECOM (10) XE5620G

The XE5620G uses "AT" commands for configuration
and control. This section describes the AT command
format and lists the AT commands, Registers and Result
codes. XE5620G "AT" commands have two operational
modes; Command Mode, Data Mode and FAX mode.

Data Mode: The XE5620G enters data mode after it
connects to a remote modem and issues the appropriate
result code. In the Data Mode the modem sends all data
presented on Transmit Data (/TXD) to the remote
modem and puts data from the remote modem onto
Received Data (/RXD). When the modem exits data
mode, it issues a "NO CARRIER" result code.

Command Mode: The XE5620G enters command
mode on power-up, reset, a lost connection, or receipt
of the escape code. In command mode the modem
accepts commands from the host on transmit data.
Appropriate result codes are returned on received data.

Fax Mode: The XE5620G enters Class 1 fax mode on
receipt of AT+FCLASS=1. In fax mode commands and
responses are issued at 19,200 bits per second; the
character format is 8 bits no parity. The modem accepts
fax commands only in fax mode. The A/, A T O, AT&T and
escape commands are not valid in fax mode.

Command Line Format

Command lines issued to the modem follow a strict
format. Each command begins with the prefix AT. The
command buffer stores the command line and executes
it upon receipt of a carriage return. Until executed, the
command line can be edited with the backspace key.

Command Prefix - Each command, except the A/
command, begins with the AT prefix. The "A" and "T"
may be both upper case or both lower case but cannot be
of different cases. The prefix identifies the speed and
parity of the commands sent to the modem. The modem
deternies data rate by measuring the width of the
incoming bits. Parity is determined by comparing the
parity bits of the "A" and the "T ."

XE5620G AT Commands

Command Line - Commands may be strung together in

a single command line of up to 36 characters. Com­mands are executed in the sequence they appear. Spaces
may be inserted into the command line but do not fill
space in the command buffer. A carriage return termi­nates the command line and causes the commands to be
executed. Register S3 allows the user to select a
character other than a carriage return to terminate the
command line.

Command Buffer - The Command Buffer holds a
maximum of 36 characters, including the AT prefix. If
the command buffer overflows, the modem issues an
"ERROR" result code and commands are not executed.

Command Line Editing - The backspace edits a
command line before it is executed. The backspace key ,
(Control and H simultaneously on some systems), erases
the previous character in the command line. Register S5
allows the user to select a character other than a back­space to edit the command line.

Re-Execute Last Command - The A/ command causes
the modem to re-execute the last command line. This is
the only command which does not require the "AT"
prefix.

Omitted Parameters - Most commands include a pa­rameter which determines how the functions will be set.
When the command parameter is omitted from the
command string, it is assumed to be a 0.

Escape Characters - A 3 character escape sequence
may be entered to switch the modem into command
mode while on line. The escape character, set by
Register S2, must be entered 3 times in succession to
execute the escape. An AT command must then be
entered within the period defined by S12 to enter
command mode. The default escape sequence is "+++."

Result Codes - The modem issues a result code after
each action. Result codes may be sent as full words,
one or two digit numeric codes, or may be disabled all
together. Each result code ends with a carriage return
when numeric result codes are chosen. When full word
result codes are chosen, a Line Feed and Carriage
Return precede and follow each result code.

XECOM (11) XE5620G

XE5620G AT Commands

An asterisk indicates the factory default
A - Answer Command -

Bn - Select Communications Standard

n= 0 Selects CCITT standards *
n= 1 Selects Bell standards

D - Dial Command -

0-9, A-D, #, * = Dialing Digits
P = Pulse dial
T = Tone dial
W = W ait for dial tone
, = Pause for the duration of S8
@ = Wait for silence
! = Switch hook flash
; = Return to the command state
^ = Enable Calling T one
S=n = Dial Stored Number n

En - Command Echo

n= 0 Do not echo commands
n=1 Enable command echo*

Hn - Switch Hook Control -

n= 0 Switch hook relay opens
n= 1 Switch hook relay closes

In - Modem Identification
Ln - Speaker Volume -

n=0 Speaker volume low
n=1 Speaker volume low
n=2 Speaker volume medium *
n=3 Speaker volume high.

Mn - Speaker Activity -

n= 0 Speaker off
n= 1 Speaker on until carrier received*
n= 2 Speaker remains on
n= 3 Speaker on after dialing until DCD detected.

Nn - Modulation Selection

n= 0 Communication Rate set by AT*I Command
n= 1 Automatic Negotiation of Data Rate beginning at

A T*I Setting. *

On - On Line

n= 0 Return On Line with no retrain*
n=1 Initiate retrain while returning On line.
n=2 Initiate rate renegotiation while returning On line.

Qn - Responses

n= 0 Send responses *
n= 1 No Responses

Sr? - Interrogate Register ­Sr=n - Set Register Value -

Vn - Result Codes -

n= 0 Numeric Result Codes
n=1 English Word Result Codes*

Wn - CONNECT Result Code -

n= 0 Display CONNECT DCE Speed
n= 1 Display CONNECT DTE Speed
n= 2 Display CONNECT DCE Speed plus error control

extension *

n= 3 Display CONNECT DTE Speed plus error control

extension

Xn - Result Code Set -

n= 0 Responses 0-4
n= 1 Responses 0-5 & 10
n= 2 Responses 0-6 & 10
n= 3 Responses 0-5, 7 & 10
n= 4 Responses 0-7 & 10*

Zn - Reset -

n= 0 Reset and Recall Profile 0 *
n= 1 Reset and Recall Profile 1

&Cn - DCD Operation

n= 0 DCD is forced active
n= 1 DCD indicates a valid carrier signal *

&Dn - DTR

n= 0 DTR is ignored
n= 1 When the modem is on-line DTR off switches it to

the command mode and issues OK response.
n= 2 Modem disconnects if the host revokes DTR.*
n=3 The modem performs a soft reset when DTR is

revoked.

&F - Reset Factory Defaults
&Gn - Guard Timer -

n= 0 None *
n=1 550 Hz Guard Timer
n=2 1800 Hz Guard Timer

XECOM (12) XE5620G

XE5620G AT Commands

&Kn - Flow Control

n=0 No Flow Control
n=3 RTS/CTS Flow Control *
n=4 XON/XOFF Flow Control
n=5 Transparent XON/XOFF Flow Control

&Pn - Pulse Dial Make/Break Ratio

n=0 39%/61% 10 PPS *
n= 1 33%/67% 10 PPS
n= 2 39%/61% 20 PPS
n= 3 33%/67% 20 PPS

&Rn - Clear to Send

n= 0 Clear to Send follows Requst to Send
n= 1 Clear to Send Active *

&Sn - Data Set Ready

n=0 Data Set Ready Forced Active *
n=1 Data Set Ready on at Start of Modem handshake

&Un - Protocol Selection

n= 0 V.90 *
n=1 V .34Bis/V.34
n=2 V .32bis/V.22bis
n=3 Bell 103
n=4 V .21
n=5 V .23

&V - View Active Configuration
&Wn - Store Current Configuration

n= 0 Store Active Configuration in Profile 0 *
n=1 Store Active Configuration in Profile 1

&Yn - Select Configuration to Recall

n= 0 Recall Configuration Profile 0 *
n=1 Recall Configuration Profile 1

&Zn=x - Store dialing string x
%Cn - Data Compression Control

n= 0 No Data Compression
n= 1 Data Compression Enabled *

\Nn - Error Control Mode

n=0 Normal Mode
n= 1 Direct Mode
n= 2 MNP Required
n= 3 MNP or Normal
n= 4 Auto Error Correction V.42 without ODP or ADP

Phase Detection, MNP or Normal mode
n=5 Auto Reliable Mode *
n= 6 V.42 without ODP or ADP Phase Detection required
n=7 V.42 with ODP or ADP Phase Detection required

\Vn - Protocol Result Code

n= 0 No Protocol Result code added to Response *
n= 1 Protocol Result code added to Response

*Hn - Automatic Retrain

n=0 Automatic Retrain Disabled
n=1 Automatically retrain on poor signal quality

*In - Select Maximum Connection Speed

n=0 1200 BPS,
n=1 2400 BPS, 28,000 with A T&U=0
n=2 4800 BPS, 29,333 with A T&U=0
n=3 7200 BPS, 30,666 with A T&U=0
n=4 9600 BPS, 32,000 with A T&U=0
n=5 12,000 BPS, 33,333 with A T&U=0
n=6 14,400 BPS, 34,666 with A T&U=0
n=7 16,800 BPS, 36,000 with A T&U=0
n=8 19,200 BPS, 37,333 with AT&U=0
n=9 21,600 BPS, 38,666 with A T&U=0
n=10 24,000 BPS, 40,000 with AT&U=0
n=11 26,400 BPS, 41,333 with A T&U=0
n=12 28,800 BPS, 42,666 with A T&U=0
n=13 31,200 BPS, 44,000 with A T&U=0
n=14 33,600 BPS *, 45,333 with A T&U=0
n=15 46,666 BPS with A T&U=0

XECOM (13) XE5620G

XE5620G AT Commands

n=16 48,000 BPS with A T&U=0
n=17 49,333 BPS with A T&U=0
n=18 50,666 BPS with A T&U=0
n=19 52,000 BPS with A T&U=0
n=20 53,333 BPS with A T&U=0
n=21 54,666 BPS with A T&U=0
n=22 56,000 BPS with AT&U=0 *

*Hn - Automatic Retrain

n=0 Automatic Retrain Disabled
n=1 Automatically retrain on poor signal quality *

*NCn - Country Configuration

n=1 Austria
n=2 Belgium
n= 3 Denmark
n=4 Finland
n= 5 France
n=6 Germany
n=7 Ireland
n=8 Italy
n=9 Luxembourg
n=10 Holland
n= 11 Norway
n=12 Portugal
n=13 Spain
n=14 Sweden
n=15 Switzerland
n=16 United Kingdom
n=17 Greece
n=18 India
n=19 Czech Republic
n=20 Taiwan
n=21 reserved
n=22 United States
n=23 reserved
n=24 Poland
n=25 Russia
n=26 Namibia
n=27 South Africa
n=28 Iceland
n=29 Liechtenstein

n=30 reserved
n=31 reserved
n=32 reserved
n=33 reserved
n=34 reserved
n=35 reserved
n=36 reserved
n=37 reserved
n=38 reserved
n=39 reserved
n=40 Australia

*On - Transmit Level Selection (Note: This feature is

not available in all country configurations.)

n= 0 -11 dBm (default)
n=1 -12 dBm
n=2 -13 dBm
n=3 -14 dBm
n=4 -15 dBm
n=5 -16 dBm
n=6 -17 dBm
n=7 -18 dBm
n=8 -19 dBm
n=9 -20 dBm
n=10 -21 dBm
n=11 -22 dBm
n=12 -23 dBm
n=13 -24 dBm
n=14 -25 dBm
n=15 -26 dBm

XECOM (14) XE5620G

XE5620G AT Class 1 FAX Commands

AT+FCLASS? - Service Class Indication

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FCLASS=? - Service Class Capability

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FCLASS=n - Set Service Class

0 = Configured as a data modem
1 = Configured for Service Class 1.

AT+FAE=n - Data/Fax Auto Answer

0 = Answer as a fax modem only
1 = Either a fax or data modem

AT+FLO - Flow Control

0 = Flow Control Off
1 = XON/XOFF Flow Control Selected
2 = RTS/CTS Flow Control Selected

AT+FRH<mod> - Receive HDLC Data

3 V.21 Channel 2, 300 bps
24 V.27ter , 2400 bps
48 V.27ter , 4800 bps
72 V.29, 7200 bps
96 V.29, 9600 bps
97 V.17, 9600 bps
98 V .17 short train, 9600 bps

121 V.17, 12,000 bps
122 V .17 short train, 12,000 bps
145 V.17, 14,400 bps
146 V .17 short train, 14,400 bps

AT+FRM<mod> - Receive Fax

(see A T+FRH for "mod" values)

AT+FRS<time> - Receive Silence
AT+FRTn - Receive Test Data
AT+FTH<mod> - Transmit HDLC Data

(see A T+FRH for "mod" values)

AT+FTM<mod> - Transmit Fax

(see A T+FRH for "mod" values)

AT+FTS<time> - Transmit Silence
AT+FTTn - Transmit Test Data

XECOM (15) XE5620G

XE5620G Modem Registers

S0 Answer on nth Ring: S0 sets the modem to

automatically answer on the nth ring. Setting S0 to 0
disables automatic answer.
Range: 0 to 255
Units Rings
Default 0

S1 Ring Count: S1 is a read-only register showing the

number of rings detected. If a ring is not detected
within 8 seconds, S1 is reset to zero.
Range: 0 to 255
Units Rings
Default 0

S2 Escape Character: S2 determines the ASCII escape

character. Values of 0-127 select valid characters;
values from 128 to 255 disable the escape sequence.
Range: 0 to 255
Units ASCII Character
Default 43 (+)

S3 Line Termination Character: S3 determines the

ASCII character which will terminate commands and
modem responses.
Range: 0 to 127
Units ASCII Character
Default 13 (Carriage Return)

S4 Line Feed Character: S4 sets the ASCII character

to act as a line feed character in modem responses.
Range: 0 to 127
Units ASCII Character
Default 10 (Line Feed)

S5 Backspace Character: S5 defines the ASCII

character used as a backspace to edit the command
line.
Range: 0 to 127
Units ASCII Character
Default 8 (Back Space)

S6 Dial Tone Wait T ime: S6 determines how long the

modem waits for dial tone before dialing. The Dial
T one Wait Time cannot be set to less than two seconds.

Range: 3 to 7
Units Seconds
Default 6

S7 W ait for Carrier after Dialing: S7 determines how long

the modem waits for a valid carrier signal after dialing.
Range: 1 to 255
Units Seconds
Default 60

S8 Comma Pause Time: S8 defines the duration of the

pause initiated by a comma in the dialing string. The pause
is generally used when waiting for a second dial tone.
Range: 1 to 255
Units Seconds
Default 2

S9 Carrier Detect Response Time: S9 establishes the

length of time the remote modem's carrier must be present
to be recognized as valid.

Range: 1 to 255
Units 0.1 Seconds
Default 6

S10 Carrier Off Disconnect Delay: S10 selects how long

carrier must be lost before the modem disconnects. Note:
If S10 is smaller than the value of S9 or S10 is set to 255,
the modem will not automatically disconnect on loss of
carrier.

Range: 1 to 255
Units 0.1 Seconds
Default 1 4

S11 Tone Dialing Speed: S1 1 sets the duration and spacing

of the dialing tones. S11 does not affect the pulse dialing.

Range: 50 to 255
Units 1 Millisecond
Default 9 5

S12 Escape Code Guard Timer: S12 sets the escape

sequence guard timer. If characters are received before or
after the escape sequence, within the guard timer, the
modem aborts the escape attempt and remains in data
mode.

Range: 0 to 255
Units 0.02 Seconds
Default 5 0

S13 Pulse Dialing : S13 permits pulse dialing to be disabled

Register Setting Function

0 No Pulse Dialing
1 Pulse Dialing Allowed

XECOM (16) XE5620G

XE5620G Modem Registers (continued)

S14 Bit-mapped Register: S14 stores the values of

Several A T Commands.

Bit Function

0 Echo (A TE0)
1 Reserved
2 Result Codes (ATQ0)
3 Numeric Responses (ATV0)

4,5 Pulse Dialing Parameters (AT&P0)

S21 Bit-mapped Register: S21 stores the values of

Several A T Commands.

Bit Function

0-2 Reserved

3, 4 DTR Condition (AT&D)

5 DCD Function (AT&C)
6 DSR Function (AT&S)
7 Reserved

S22 Bit-mapped Register: S22 stores the values of

Several A T Commands.

Bit Function

0-3 Speaker Control (A TL/ATM)

4,5,6 Response Set (ATX)

7 Reserved

S23 Bit-mapped Register: S23 stores the modem’s active

data format.

Bit Function

0, 1,2,3 DTE Rate 0-300 BPS

4, 5 Parity
6,7 Reserved

S30 Inactivity Timer: S30 determines how long the mo-

dem wil remain on line with not data flowing. A 0 in
this register disables the inactivity time out.

Range: 0-255
Units Minutes
Default 0

S45 Sleep Mode Timer: S45 determines how long the mo-

dem wil remain inactive before entering the low power
sleep mode.

Range: 0, 5-255
Units Seconds
Default 0

S95 Bit-mapped Register: S95 stores the modem’s result

code and moduleation information.

Bit Function

0, 1, 2 Result Code Selection

3 Modulation Selection

4-7 Reserved

S97 Bit-mapped Register: S97 stores the modem’s error

control and data compression information.

Bit Function
0-2 Error Correction Selection
3-6 Reserved

7 Data Compression Selection

S98 Bit-mapped Register: S98 stores the automatic retrain

and Flow control status.

Bit Function
0, 1 Error Correction Selection
2, 3 Reserved

4-6 Flow Control Selection

7 Reserved

XECOM (17) XE5620G

XE5620G Modem Responses

Digits Verbose Description

0 OK Command Successful
1 CONNECT 300 bps connection
2 RING Ring signal detected
3 NO CARRIER Carrier not detected
4 ERROr Error in command line
5 CONNECT 1200 1200BPS Connection
6 NO DIAL TONE No dial tone detected
7 BUSY Busy signal detected
8 NO ANSWER No 5 sec. silence detected

9 CONNECT 300 300 BPS Connection
10 CONNECT 2400 2400 BPS Connection
11 CONNECT 4800 4800 BPS Connection
12 CONNECT 9600 9600 BPS Connection
13 CONNECT 7200 7200 BPS Connection
14 CONNECT 12000 12,000 BPS Connection
15 CONNECT 16800 16,800 BPS Connection
16 CONNECT 19200 19,200 BPS Connection
17 CONNECT 21600 21,600 BPS Connection
20 CONNECT 14400 14,400 BPS Connection
21 CONNECT 24000 24,000 BPS Connection
22 CONNECT 38400 38,400 BPS Connection
23 CONNECT 57600 57,600 BPS Connection
24 CONNECT 115200 115,200 BPS Connection
25 CONNECT1200TX/75RX V.23 Connection 1200 BPS

Transmit 75 BPS Receive

26 CONNECT75TX/1200RX V .23 Connection 75 BPS

Transmit 1200BPS Receive
28 CONNECT BELL 300 Bell 300 BPS Connection
29 CONNECT V21 V21 300 BPS Connection

Digits Verbose Description

30 CONNECT 26400 26,400 BPS Connection
31 CONNECT 28800 28,800 BPS Connection
32 CONNECT 31200 31,200 BPS Connection
33 CONNECT 33600 33,600 BPS Connection
34 CONNECT 28000 V .90 28,000 BPS Connection
35 CONNECT 29333 V .90 29,333 BPS Connection
36 CONNECT 30666 V .90 30,666 BPS Connection
37 CONNECT 32000 V .90 32,000 BPS Connection
38 CONNECT 33333 V .90 33,333 BPS Connection
39 CONNECT 34666 V .90 34,666 BPS Connection
40 CONNECT 36000 V .90 36,000 BPS Connection
41 CONNECT 37333 V .90 37,333 BPS Connection
42 CONNECT 38666 V .90 38,666 BPS Connection
43 CONNECT 40000 V .90 40,000 BPS Connection
44 CONNECT 41333 V .90 41,333 BPS Connection
45 CONNECT 42666 V .90 42,666 BPS Connection
46 CONNECT 44000 V .90 44,000 BPS Connection
47 CONNECT 45333 V .90 45,333 BPS Connection
48 CONNECT 46666 V .90 46,666 BPS Connection
49 CONNECT 48000 V .90 48,000 BPS Connection
50 CONNECT 49333 V .90 49,333 BPS Connection
51 CONNECT 50666 V .90 50,666 BPS Connection
52 CONNECT 52000 V .90 52,000 BPS Connection
53 CONNECT 53333 V .90 53,333 BPS Connection
54 CONNECT 54666 V .90 54,666 BPS Connection
55 CONNECT 56000 V .90 56,000 BPS Connection

XECOM (18) XE5620G

FCC Instructions

The XE5620G complies with part 68 of the FCC Rules and Regulations. With each device shipped, there is a label which contains,
among other information, the FCC Registration Number and Ringer Equivalence Number (REN) for this product. Y ou must, upon
request, provide this information to your telephone company.

The mounting of this device in the final assembly must be made in such a manner as to preserve the high voltage protection be­tween the TIP/RING Connection and the rest of the system. Typically, this may be accomplished by maintaining a minimum
spacing 100 mils between the TIP/RING Traces to the RJ-11C Jack and low voltage portion of the system. No additional cir­cuitry may be attached between TIP/RING and the telephone line connection, unless specifically allowed in the rules.

The REN is useful to determine the quantity of devices you may connect to a telephone line and still have all of these devices
ring when the number is called. In most, but not all areas, the sum of the RENs of all devices connected to one line should not
exceed five (5.0). To be certain of the number of devices you may connect to the line, as determined by the REN, you should
contact the local telephone company to determine the maximum REN for you calling area.

If your system causes harm to the telephone network, the telephone company may discontinue service temporarily. If possible,
they will notify you in advance. If advance notification is not practical, you will be notified as soon as possible.

Your telephone company may make changes in its facilities, equipment, operations or procedures that could affect proper func­tioning of your equipment. If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted tele­phone service.

If you experience trouble with this device, please contact XECOM at [phone] for information on obtaining service or
repairs. The telephone company may ask you to disconnect this device from the network until the problem has been corrected
or until you are sure that the device is not malfunctioning.

The device may not be used on coin service lines provided by the telephone company (this does not apply to private coin tele­phone applications which use standard telephone lines). Connection to party lines is subject to state tariffs.

XECOM (19) XE5620G

Devices sold by XECOM are covered by the warranty provisions appearing in its Terms of Sale only. XECOM makes no war­ranty, express, statutory, implied, or by description regarding the information set forth herein, or regarding the freedom of the
described devices from patent infringement. XECOM makes no warranty of merchantability or fitness for any purposes.
XECOM reserves the right to discontinue production and change specifications and prices at any time and without notice. This
product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual en­vironmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are
specifically not recommended without additional processing and authorization by XECOM for such application.

Xecom assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xecom product. No other cir­cuits, patents, or licenses are implied.

Xecom's products are not authorized for use as Critical Components in Life Support Devices or Systems.

Life Support Devices or Systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) sup­port or sustain life, and whose failure to perform, when properly used in accordance with instructions provided in the labeling,
can be reasonably expected to result in significant injury to the user.

A Critical Component is any component of a life support device or system whose failure to perform can be reasonably ex­pected to cause failure of the life support device or system, or to affect its safety or effectiveness.

Terms of Sale

Life Support Policy

Copyright, Xecom © 2002
While Xecom, Inc. has made every effort to ensure that the information presented here is accurate, Xecom will not be liable for any damages arising from errors or
omission of fact. Xecom reserves the right to modify specifications and/or prices without notice. Product mentioned herein are used for identification purposes only
and may be trademarks and/or registered trademarks of their respective companies.

Xecom Incorporated
374 Turquoise Street, Milpitas, CA 95035
Ph:408-945-6640 Fax:[phone] E-Mail: [e-mail]