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Xecom, Inc. XE9601
9600 BPS Data Modem Module
XE9601
08-97
Description
Xecom's XE9601 provides high-speed data
transfer in a compact component. The XE9601
is a complete modem not just a modem chip. It
includes the telephone interface and all required
RAM and ROM. The XE9601's internal
telephone interface permits Xecom to offer user
transferable FCC Part 68 registration on the
XE9601. The XE9601 connects to the host
through a TTL level serial interface and to the
telephone network through a user-supplied RJ11
jack.
Xecom's XE9601, XE1401, XE3301 and
XE2401 share a common pin configuration.
This permits Xecom customers to select the
appropriate data rate from 2400 to 33,600 bps.
Features
• Small Size; 2.75 " x 1.38" x 0.55"
• Modem Protocols: CCITT V.32, V.22bis,
V.22, V.21; Bell 212A and 103
• Pin compatible with Xecom's XE2401
• User Transferrable FCC Part 68
Registration
• Modem control with "AT" commands
• Modem link speed to 9600 bps
• Low power, single +5V supply
Operating Power 1.0 W (Typ.)
Idle Power 125 mW (Typ.)
Sleep mode: 50 mW (Typ.)
xecom
PIN CONFIGURATION
RESET
N/C
RXD
/DTR
/AA
/CTS
OH
TXD
/RTS
NC
/RI
TIP
RING
AUX
I/O
ANALOG
FRONT END
DAA
TIP
RING
V
cc
GND
CONTROLLER
MEMORY
/RTS
/DTR
/CTS
/DSR
TXD
RXD
/DCD
/RI
RESET
OH
AR
AMP
/HS
/AA
RS232
I/O
VCC
/DSR
/DCD
AMP
GND
Block Diagram
1
2
3
9
10
11
12
13
14
15
16
18
20
40
39
38
22
21
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Xecom, Inc. (2) XE9601
Mechanical Specifications - XE9601
A
B
Denotes Pin 1
C
D
G
J
H
E
F
K
L
A 2.74 2.760 69.60 70.10
B 1.370 1.390 34.80 35.31
C 0.490 0.510 12.45 12.95
D 0.890 0.910 22.61 23.11
E 1.890 1.910 48.01 48.51
F 0.175 0.250 4.41 6.35
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 0.040 0.51 1.02
L 0.380 0.400 9.65 10.16
Pins = 0.025 inch square pin
All pins tin-plated
INCHES METRIC(MM)
PIN MIN MAX MIN MAX
1 RESET I Hardware reset pin, Input, active High, TTL. A high on Pin 1 initiates a hardware reset.
An external reset is not required or recommended. The Reset pulse must be a minimum
of 200 milliseconds long.
2 N/C No Connection
3 RXD O Received Data, Output, TTL. Serial data output to the host. A logic "high" represents a
"mark" and a logic "low" represents a "space".
9 \DTR I Data Terminal Ready, Input, active Low, TTL. "&D" sets the function of DTR. The
default, &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 \AA O Auto-Answer, Output, active Low, TTL. A low on \AA indicates the modem is configured
to automatically answer an incoming call.
11 \CTS O Clear to Send, Output, active LO, TTL/CMOS. This pin indicates the modem is able to
transfer data.
12 OH O Off-Hook, Output, active High. OH indicates the modem's hookswitch relay is closed.
Hookswitch closure connects the modem to the telephone line.
13 TXD I 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 I Request to Send, input, active LO, TTL. The XE9601 does not use RTS.
15 NC --- No Internal Connection
16 \RI O Ring Indicator, Output, active LO, TTL. When low indicates the modem is receiving a ring
signal.
18 TIP — Tip connection to the phone line(RJ11 pin3) from the internal DAA. The XE9601 is not
sensitive to the battery voltage polarity across Tip and Ring.
20 RING — Ring connection to the phone line(RJ11 pin4) from the internal DAA.
PIN NAME I/O DESCRIPTION
Pin Descriptions
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Xecom, Inc. (3) XE9601
21 GND — Ground (0 volts)
22 AMP O 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.
38 \DCD O Data Carrier Detect, output, active LO, TTL/CMOS. &C sets the DCD function. In the
default condition, AT&C1, DCD indicates the presense of a carrier signal on the
telephone line.
39 \DSR O Data Set Ready, output, active LO, TTL/CMOS. &S sets the DSR function. In the default
condition, AT&S0, DSR is forced true.
40 Vcc — +5 Volts
PIN NAME I/O DESCRIPTION
Pin Descriptions (continued)
Tip
Ring
L1
L2
C1
C2
J1
VCC
Reset
TXD
RXD
+5 Volts
50K
.2 ufd
250 ufd
.05 ufd
10 ohms
8 ohm .5 W
Speaker
AMP
4 3
Line
GND
LM386
/RI
/RTS
/CTS
/DTR
/DSR
/DCD
OH
XE9601
16C450
UART
/DSR
/DCD
SIN
/DTR
/CTS
SOUT
/RTS
/RI
Modem Applications Schematic
Note: RJ11 Pin assignments reference a 6-pin connector. Tip and Ring are the center pins of all RJ11
jacks.
Recommended Parts
Reference Designation Description Recommended Part Number
L1, L2 Ferrite Beads TDK CB30-1812
C1, C2 Capacitors Sprague 30GAT47, 470 pfd, 3000 Volts
J1 RJ11 Jack Stewart SS6446NF
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Xecom, Inc. (4) XE9601
AT Commands
Modes of Operation
The XE9601 has two operating modes; Data mode and
Command mode. Modem setup occurs in Command
Mode; data transfer occurs in Data Mode.
Data Mode: XE9601 enters data mode after it
establishies a modem link and issues the "CONNECT"
result code. In Data Mode all signals on Transmit Data
(TXD) are sent to the remote modem. Demodulated
signals from the remote modem are placed onto
Received Data (RXD). The XE9601 exits data mode
when it loses the link or receives the escape sequence.
Command Mode: XE9601 enters command mode on
power-up, reset, disconnect, or receipt of the escape
sequence. The modem accepts commands from the
host on TXD and issues Result Codes on RX. The
modem ignores signals on TXD which do not conform
to the command format.
Command Line Format
Modem commands follow a specified format. Each
command begins with the "AT" prefix. The modem
stores the command line in its command buffer. The
command is executed upon receipt of a carriage
return. The command line can be edited up until the
time it is executed.
"AT" Prefix - Each command begins with the "AT"
prefix. The "A" and "T" may be both upper or lower
case but cannot be different cases. The prefix
identifies the speed and parity of the host. The
modem measures the width of incoming bits to
calculate speed and compares the parity bits of the
two characters to determine parity.
Command Line - A command line may include a
series of commands. Commands are executed in the
sequence they appear. A carriage return terminates
the command line and triggers the modem to execute
the commands. Register S3 allows the user to select a
character other than a carriage return to terminate the
command line and intitate command execution.
The command buffer holds up to 40 characters
including the "AT" prefix. You may insert spaces to
improve ledgibility; they do not fill space in the
command buffer. If the command buffer overflows, the
modem issues an "ERROR" result code, and the
commands are not executed.
A Backspace can be used to edit the command line.
The command line can only be edited before
execution. The backspace 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 command does not require the "AT" prefix.
A command string remains in the command buffer until
a new command is issued or power is shut-off.
Ommitted Parameters - Most commands require a
parameter to specify the function. When this
parameter is omitted from the command, it is assumed
to be a 0.
Escape Sequence - An escape sequence switches the
modem from data to command mode while maintaining
the modem link. The escape sequence uses an
escape character, set by Register S2, entered 3 times
in succession. The default escape character is "+." A
guard timer before and after the sequence prevents
normal data from triggering an escape.
Result Codes - The modem issues a result code after
each action. Result codes may be full words, numeric
codes or may be disabled. Each numeric result code
ends with a carriage return. Full word result codes
have a Line Feed and Carriage Return before and after
the result code. The XE9601 sends result codes at the
speed and parity determined from the "AT" prefix.
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Xecom, Inc. (5) XE9601
Result Code Summary
0 OK Command executed.
1 CONNECT Any connection, X0 selected; otherwise connected at 300 bps.
2 RING Ring signal detected.
3 NO CARRIER Carrier signal not detected or lost.
4 ERROR Invalid command line or command buffer overflow.
5 CONNECT 1200 Connection at 1200 bps. Disabled by X0.
6 NO DIAL TONE No Dialtone detected. Enabled by X2, X4, or W dial modifier.
7 BUSY Busy detected. Enabled by X3 or X4.
8 NO ANSWER No silence detected. Enabled by @ dial modifier.
10 CONNECT 2400 Connection at 2400 bps. Disabled by X0.
11 CONNECT 4800 Connection at 4800 bps. Enabled by W0.
12 CONNECT 9600 Connection at 9600 bps. Enabled by W0.
DIGIT VERBOSE DESCRIPTION
A - Answer Command Bn - Select Communications Standard
n=0 Selects CCITT standards
n=1 Selects Bell standards*
D - Dial Command -
P = Pulse dial
T = Tone dial
R = Connect as an answering modem
W = Wait for dial tone
, = Pause for the duration of S8
@ = Wait for silence
! = Switch hook flash
; = Return to the command state
En - Command Echo
n=0 Do not echo commands
n=1 Enable command echo*
Fn - Speed Selection
n=0 Auto detect*
n=1 300 bps
n=4 1200 bps
n=5 2400 bps
n=6 4800 bps
n=8 9600 bps
Hn - Switch Hook Control -
n=0 Switch hook relay opens*
n=1 The switch hook relay closes
In - Modem Identification
Ln - Speaker Volume -
n=0 Lowest speaker volume
n=1 Low speaker volume
n=2 Moderate speaker volume*
n=3 High speaker volume
AT Command List
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 carrier
is detected.
Nn - Data Rate -
n=0 Disable Automode Detection
n=1 Enable Automode Detection *
On - On Line
n=0 Return On Line with no retrain*
n=1 Initiate retrain 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*
Xn - Result Code Set -
n=0 Result codes 0 to 4
n=1 Result codes 0 to 5 and 10
n=2 Result codes 0 to 6 and 10
n=3 Result codes 0 to 5, 7 and 10
n=4 Full Result codes*
Yn - Long Space Disconnect -
n=0 Long Space Disconnect Disabled*
n=1 Disconnect on long space
Z - Reset -
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Xecom, Inc. (6) XE9601
AT Command List (continued)
&Cn - DCD Operation
n=0 DCD is forced active.
n=1 DCD indicates a valid carrier*
&Dn - DTR
n=0 DTR is ignored by the modem.
n=1 Modem switches to command mode when
DTR lost.
n=2 Modem disconnects if host revokes DTR.*
n=3 The modem performs a soft reset when DTR
revoked.
&F - Return to Factory Defaults
&Gn - Guard Tone
n=0 Guard Tone Disabled*
n=1 550 Hz Guard Tone
n=2 1800 Hz Guard Tone
&Ln - Line Type
n=0 Dial-up Lines*
n=1 Leased Lines
&Pn - Dial Pulse Make/Break Ratio
n=0 39/61%*
n=1 33/67%
&Sn - DSR Operation
n=0 DSR always active*
n=1 DSR in accordance with V.25.
&Tn - Test Modes
n=0 Exit test mode*
n=1 Local analog loopback
n=3 Initiate local digital loopback
n=4 Respond to remote loop request
n=5 Deny remote loop request
n=6 Intiate a Remote Digital loopback
n=7 Remote digital loopback w self-test
n=8 Local analog loopback w self-test
&V - View Configuration Profile
%En - Automatic Retrain
n=0 No automatic retrain*
n=1 Enable automatic retrain
break to the host
S-Register Summary
REG. RANGE/UNITS DESCRIPTION DEFAULT
S0 0-255/rings Number of rings before auto-answer 000
S1 0-255/rings Count number of incoming rings 000
S2 0-127/ASCII Escape character 043
S3 0-127/ASCII Carriage return character 013
S4 0-127/ASCII Line Feed character 010
S5 0-32,127/ASCII Backspace character 008
S6 2-255/sec Dial tone wait time 002
S7 1-60/sec Wait time for remote carrier 050
S8 0-255/sec Pause time for comma in command string 002
S9 1-255/0.1 sec Carrier detect response time 006
S10 1-255/0.1 sec Delay from loss of carrier to hang up 014
S11 50-255/msec DTMF dialing speed 095
S12 0-255/0.02 sec TIES Escape Code Time Limit 050
S18 0-255/sec Modem test timer 000
S24 0-255/sec Sleep Mode Activation Timer 000
S25 Bit Mapped DTR Transitions 005
S30 Bit Mapped Sleep Mode timer 010
S37 Bit Mapped Maximum Link Speed 000
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Xecom, Inc. (7) XE9601
Power Management:
The XE9601 includes an integrated power management capability. If sleep mode is
activated, S24, and no activity is detected on the RXD, DTR, or RI the modem will automatically go into a smart
sleep mode. In this mode power consumption is typically just 50 milliwatts.
Symbol Parameter Typ Max Units Comments
Power Supply Characteristics(TA = 0 - 70°C, Vcc = 5v ±5%)
Vcc Supply Voltage 5.0 5.25 V
Icc Vcc Supply Current 200 250 mA Active State, On Line
25 mA Active State, Idle
Iccs Sleep Current 10.0 mA Sleep Mode
Telephone Line Impedance Match 600 ohms
Ring Detect Sensitivity (on hook, Type B ringer) 38 Vrms
Telephone Line Holding Current 0 20 100 mA
Telephone Line Interface Specifications
PARAMETER MIN TYP MAX UNIT
I/O Characteristics
Signals Description
DIGITAL INPUTS Input High Input Low
/DTR, /RTS, TXD, RESET min. 2.0 V max. 0.8 V
DIGITAL OUTPUTS Output High Output Low Current Drive
AR, /RI min. 2.4 V max. 0.8 V 15 ma
/CTS, /DSR, /DCD, RXD min. 2.4 V max. 0.4 V 1.6 ma
Electrical Specifications
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 0 TO 70° C
*Exceeding these values may result in permanent damage to the device.
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Xecom, Inc. (8) XE9601
PARAMETER MIN TYP MAX UNIT COMMENTS
DTMF Level -2.2 0 dBm
DTMF Twist (Balance) 3 dB
DTMF Tone Duration 70 ms
Pulse Dialing Rate 10 pps
Pulse Dialing Make/Break 39/61 % USA
33/67 % CCITT
Pulse Interdigit Interval 785 ms
Billing Delay Interval 2.0 sec.
Tone Detection Bandpass Frequency 290 665 Hz 3 dB point
Tone Detection OFF to ON Threshold -33 dBm into 600 ohms
Tone Detection ON to OFF Threshold -35 dBm into 600 ohms
Dial Tone Detect Duration 3.0 sec.
Ringback Tone Detect Duration 0.75 sec.
Cadence 1.5 sec. OFF/ON Ratio
Busy Tone Detect Duration 0.2 sec.
Cadence 0.67 1.5 sec. OFF/ON Ratio
Other Performance Specifications
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Xecom, Inc. (9) XE9601
FCC Instructions
This product complies with Part 68 of the FCC Rules. 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. You 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 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 helps determine the number 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 your 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 (408) 945-6640 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.
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Xecom, Inc. XE9601
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 © 1997
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.
X e com Incorporated
374 Turquoise Str eet , Mi lpitas, CA 95035
Ph:408-945-6640 Fax:4 08-94 2 - 1 346 E-Mail: [email protected]
xecom
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