Preliminary
XE5617H
October 2007
Half-Size, Global Fax and Data Modem for Embedded Systems
Description
Features
The Xecom XE5617H is a complete, global modem
for data and fax in a compact module. The XE5617H
Data transfer rates, 300 bps to 56 Kbps
is available as either a leadless surface mount or
leaded module. Only Xecom offers the option of
Fax transfer from 4800 bps to 14.4 Kbps
surface mount or through hole modem modules. The
Control & configuration viaAT commands.
XE5617H requires less than half the board space of
3.3 and 5 volt compatible serial interface
the leading competitor and is less than half as thick
V.42 error control; V.42bis data compression.
as well.
Shared line features prevent modem operation
Every XE5617H module includes user transferable
from interfering with voice communications.
FCC Part 68 registration and Global Telecom
Complete integrated DAA.
compatibility. This eases the compliance burden on
the system designer adding a modem to a process
Nonvolatile configuration storage
control, medical monitoring, point-of-sale, or remote
User transferrable FCC Part 68 registration
diagnostic system.
World-wide telephone network compliance.
Models
UL60950 Recognition
XE5617H-1 - V.92 data, V.17 fax; leadless surface
Low Power operation, 3.3 Volts, 100 mw;
mount module
RoHS compliant
XE5617H-2 - V.92 data, V.17 fax; through-hole
Versions operating at Temperatures of -40 o C
module with 0.025 inch square pins
to +85 o C operation are available
XE5617H BLOCK DIAGRAM
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XE5617H
XE5617H Mechanical Specifications
XECOM
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XE5617H
XE5617H Pin Configuration
Pin Descriptions
PIN NAME
DESCRIPTION
1
Tip
The Ring and Tip signals connect the modem 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 public
switched telephone lines. The XE5617H operates regardless of the polarity of this voltage.
The “Battery” voltage drives up to 100 milliampere of DC loop current.
UL60950 requires minimum creepage and clearances distances between the Tip and
Ring and all other circuits. Clearance is the shortest distance between conductive circuits;
creepage is the distance between conductive points along the surface
2
Ring
The Ring and Tip signals connect the modem 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.
UL60950 requires minimum creepage and clearances distances between the Tip and
Ring and all other circuits. Clearance is the shortest distance between conductive circuits;
creepage is the distance between conductive points along the surface.
3
/DSR
/DSR is an active low output from the modem. The /DSR signal typically indicates that
the modem has established a communications link. The AT&S command determines
the operation of the /DSR signal.
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XE5617H
XE5617H Pin Descriptions (continued)
PIN NAME
DESCRIPTION
4
/DCD
/DCD is an active low output from the modem. /DCD normally indicates that the mo-
dem has detected a valid carrier signal from the remote modem. The AT&C command
controls when the XE5617H asserts /DCD.
5
/DTR
/DTR is an active low input to the modem. An active /DTR signals traditionally
indicates that the terminal is available for communications. The AT&D command
determines how the modem interprets activity on /DTR.
6
/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.
7
SPKR
SPKR provides a Pulse Width Modulated version of the signal on Tip and Ring allowing
connection of a speaker to the modem to monitor modem operations. The signal on
SPKR is controlled by the ATL and ATM commands.
8
Ground
Ground provides the reference voltage for all host interface signals.
9
/TXD
/TXD provides the path for transmitted data and modem commands to be passed from
the host controller to the modem.
10
/RXD
/RXD provides the path for received data and modem responses to be sent from the
modem to the host controller.
11
/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.
12
/CTS
/CTS is an active low output from the modem. When hardware flow control is set, the
modem asserts /CTS to indicate that it can accept data from the terminal equipment on
/TXD.
13
N/C
No Connection; this pin should remain unconnected.
14
VCC
VCC provides 3.3 volt power to the modem.
15
/RTS
/RTS is an active low input to the modem. When hardware flow control is set, an active
/RTS indicates to the modem that the host has data to send.
16, 17
N/C
These pins are provided only for mechanical stability. These pins must remain
unconnected.
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XE5617H
XE5617H-1 Recommending Landing Pattern
Pad Dimension: Oval 0.07” by 0.13”
Pad extension beyond PCB: 0.04”
Row center to row center: 0.74”
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XE5617H
XE5617H Electrical Specifications
Parameter
Min
Typ
Max
Units
Comments
VCC
3.13
3.3
3.47
Volts
ICC
80
85
mA
On Line
Ring Voltage Detected
26
150
VRMS
Type B Ringer
Ring Frequency Detected
15.3
68
Hz
Type B Ringer
Telephone Loop Current
16
40
100
ma
Line Impedance
600
Ohms
Data Transmit level
-12.0
-9.0
dBm
DTMF Transmit Level
-2.5
0
dBm
Avg over 3 second interval
Voh
2.4
5.0
Volts
Vol
0.4
Volts
Vih
2.0
5.0
Volts
Vil
-0.3
0.8
Volts
XE5617HABSOLUTE MAXIMUM RATINGS
Storage Temperature
-25 O C to +85 O C
1 Maximum Operating Temperature Range
0 O C to +70 O C
VCC
3.6 Volts
1 Both The XE5617H-1 and the XE5617H-2 can be ordered as an Industrial Temperature Range part.
These parts are screened for operation from -40 O C to +85 O C. There is additional cost for this screening.
Add the -ITR to the original model number to specify the Industrial Temperature Range (ITR) screening.
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XE5617H
XE5617H-1 Surface-Mount Soldering Instructions
The XE5617H-1 is subject to damage if overexposed 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.
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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XE5617H
XE5617H Typical Connection Diagram
Parts List for XE5617HTypical Connection Diagram
Reference
Designation
Qty
Description
C1, C2
2
Cap. 680 pfd, Y2
F1
1
PTC, TRF600-150
Notes:
1 Capacitors, C1 and C2, may be required for EMI filtering in your system. Without these components
you may experience unintended radiation when the telephone cable is attached. C1 and C2 are high-
voltage capacitors. We recommend the Novocap ES2211N681K502NXTM . This 680 pfd, 5000 volt
capacitor will direct the high frequency harmonics to the system ground.
2. F1 is a positive thermal coefficient (PTC) device which protects the modem from excessive current
flow. These devices are required for your system to pass UL60950. Fuses may be used in place of the
PTC’s
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XE5617H
XE5617H Connection Data
The XE5617H reports data on the current connection in response to the ATI11 command. Because many
of the reported parameters require an active connection, this command is best utilized from the on-line
command mode accessed with the escape sequence. The items shown in italics are only valid during an
active call.
The Connection Report is presented in two pages. The first page will be displayed on receipt of the ATI11
command. To move to the second page of the report hit any key. The table below describes the
information provided in the Connection Report.
REPORTED ITEM
DESCRIPTION
1 Last Connection
Reports the modulation used on the last completed connection; values include:
V.92PCM,V.92,V.90,V.34andV.32
2 Initial Transmit Carrier Rate
Upstream data rate first negotiated on last connection
3 Initial Receive Carrier Rate
Downstream data rate first negotiated on last connection
4 Final Transmit Carrier Rate
Upstream data rate at the end of the last connection
5 Final Receive Carrier Rate
Downstream data rate at the end of the last connection
6 Protocol Negotiation Result
Reports the error correction protocol negotiated on last connection; values
include LAPM/SREC, LAPM, MNP, and none.
7 Data Compression Result
Reports Link data compression protocol negotiated on last connection; values
include LAPM, MNP, V.42bis, V.44 and none.
8 Noise Level
Reports the estimated noise level in the modem signal.
9 Receive Signal Power Level
Reports the approximate level of the incoming modem signal.
10 Transmit Signal Power Level Reports the level of the outgoing modem signal.
11 Round Trip Delay
Reports how many milliseconds for the signal to be transmitted and returned.
12 Near Echo level
Reports level of echoed signal in V.34 mode.
13 Far Echo Level
Reports level of echoed signal in V.34 mode.
14 Transmit Frame Count
Reports the total number of LAPM frames transmitted thus far during the call.
15 Transmit Frame Error Count Reports the number of transmitted frames rejected during the current call.
16 Receive Frame Count
Reports the total number of LAPM frames received thus far during the call.
17 Transmit Frame Error Count Reports the number of received frames rejected during the current call.
18 Retrain by Local Modem
Reports the number of retrain and rate renegotiations requested by the local modem.
19 Retrain by Remote Modem
Reports the number of retrain and rate renegotiations requested by the remote modem.
20 Local Rate Renegotiation
Reports the number of rate renegotiations requested by the local modem.
21 Remote Rate Renegotiation
Reports the number of rate renegotiations requested by the remote modem.
22 Call Termination Cause
Reports the reason for termination of the last call; 0, disconnect by local modem
command, 1, loss of received modem carrier, 2, failed call attempt, 3,V.92, V.90 or
V.34 training failure, and 4, protocol failure.
23 Robbed-Bit Signalling
On PCM connections only reports the presence of robbed-bit signalling
24 Digital Loss (dB)
On PCM connections only shows the digital signal loss
25 Remote Server ID
On PCM lines indicates the ID of the remote server
26 Last PCM S Pointer
Displays the last S pointer when the modem expected to enter PCM mode
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XE5617H
XE5617H AT Commands
The
XE5617H
uses
"AT"
commands
for
If the command buffer overflows, the modem
configuration and control. This section describes the
issues an "ERROR" result code, and the
AT command format and lists the commands,
command line is not executed. Register S3 allows
registers and result codes.
the user to select a character other than a carriage
return to terminate the command line.
Command
Mode:
The
XE5617H
enters
command mode on power-up, reset, a lost
Re-Execute
Last
Command
-
The
A/
connection, or receipt of the escape code. In
command causes the modem to re-execute the
command mode the modem accepts commands
last command line. This is the only command
from the host on transmit data. Appropriate result
which does not require the "AT" prefix.
codes are returned on received data.
Note: For backward compatibility some functions
Omitted Parameters - Most commands include
are controlled by more than one command. In these
a parameter which determines how the functions
instances the last command issued determines the
will be set. When the command parameter is
function setting.
omitted from the command string, it is assumed to
be a 0.
Command Line Format
AT commands follow a strict format.
Each
Escape Characters - A 3 character escape
command line, except A/, begins with the prefix
sequence may be entered to switch the modem
AT. The "A" and "T" may be both upper case or
into command mode while on line. The escape
both lower case but cannot be of different cases.
character, set by Register S2, must be entered 3
The modem determines data rate of the host
times in succession to execute the escape. An AT
equipment by measuring the width of the incoming
command must then be entered within the period
bits of the “A” and “T.”
defined by S12 to enter command mode. The
default escape sequence is "+++."
Multiple commands may be combined into a single
command line of up to 40 characters. Commands
Result Codes - The modem issues a result code
are executed in the sequence they appear upon
after each action. Result codes may be sent as
receipt of a carriage return. Spaces inserted into the
full words, one or two digit numeric codes, or may
command line are not placed in the buffer.
be disabled all together. Each result code ends
with a carriage return when numeric result codes
The command line can be edited with a backspace
are chosen. When full word result codes are
before it is executed. The backspace erases the
chosen, a Line Feed and Carriage Return precede
previous character in the command line. Register S5
and follow each result code.
allows the user to select a character other than
backspace to edit the command line.
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XE5617H
XE5617H AT Commands
An asterisk indicates the factory default
Mn - Speaker Activity - Determines when the speaker
A - Answer Command - Causes the modem to
will be active.
immediately go off-hook and attempt to negotiate a
n=0 Speaker off
connection
n=1 Speaker on until carrier received *
n=2 Speaker remains on
D - Dial Command - Causes the modem to go off-hook
n=3 Speaker on until DCD active
and dial a remote modem. Below is a list of characters
accepted in the dialing string.
Nn - Link Negotiations - Selects how Register S37 will
0-9,A-D, #, * = Dialing Digits
be used to set the link negotiations
L = Redial Last Number Dialed
n=0 Connect only using the speed selected by S37
P = Pulse dial
n=1 Begin negotiations at the selected speed but
S=n = Dial number stored in location n
allow fallback *
T = Tone dial
W = Wait for dial tone
On - On Line - Puts the modem back into data mode from
, = Pause for the duration of S8
the on-line command mode with or without a retrain.
! = Switch hook flash
n=0 Return On Line with no retrain *
; = Return to the command state
n=1 Initiate retrain while returning On line.
n=3 Initiate rate renegotiation on return On line.
En - Command Echo - Determines it the modem returns
the commands received from the host.
Qn - Responses - Determines if the modem will send
n=0 Do not echo commands
responses to the host.
n=1 Enable command echo *
n=0 Send responses *
n=1 No Responses
Hn - Switch Hook Control - Controls the connection to
the telephone line.
Sr? - Interrogate Register - Read value of selected
n=0 Switch hook relay opens
register.
n=1 Switch hook relay closes
Sr=n - Set Register Value - Set value of selected
register.
In - Modem Identification - Provides product data..
n=0 Modem identity
Vn - Result Codes - Determines what the type of result
n=1 ROM Checksum
codes to be issued.
n=2 Verify Checksum,
n=0 Numeric Result Codes
n=3 Driver Version Number
n=1 English Word Result Codes*
n=4 Data Pump Firmware Version
n=5 Code Version
Wn - Expanded Result Codes - Allows protocol
n=9 Country ID
messages to be appended to the modem Connect
n=11 Connection Data
responses.
n=0 Report DTE Receive Speed
Ln - Speaker Volume - Selects level of speaker output.
n=1 Report DTE Receive Speed and protocol type
n=0 LowVolume
n=2 Report DCE Receive Speed and protocol type *
n=1 LowVolume
n=2 Moderate Volume *
n=3 HighVolume
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XE5617H
XE5617H AT Commands
Xn - Result Code Set - Sets the modem responses
n=0
Terminate Test in Progress
n=0 Responses 0-4
n=1
Local Analog Loopback test
n=1 Responses 0-5 & 10
n=3
Local Digital Loopback test
n=2 Responses 0-6 & 10
n=3 Responses 0-5, 7 & 10
&V - View Active Configuration - Presents current
n=4 Responses 0-8 & 10*
modem configuration information
n=5 All Responses
n=6 All Responses
&W - Store Active Configuration - Places the current
n=7 All Responses except extended result codes
configuration into the selected memory location where
it can be recalled on a soft reset.
Z - Reset - Causes an immediate modem soft reset and
reconfigures the modem to the stored values
&Zx=n - Store Number n in Location “x” - Permits
placement of a telephone number in the selected
&Cn - Data Carrier Detect Operation - Determines how
memory location.
Dialing the stored number is
the modem will present /DCD to the host.
accomplished with the s=n dial modifier where n is the
memory location of the stored number.
n=0 /DCD forced active at all times
x=0
Location 0
n=1 /DCD indicates modem carrier signal state *
n=1
Location 1
n=2
Location 2
&Dn - Data Terminal Ready Determines how the
modem will react to the removal of /DTR from the host.
n=0 Modem ignores status of /DTR
\Gn - In Band Flow Control - Determines how the
modem handles received XON and XOFF flow control
n=1 If /DTR is deactivated while the modem is on
characters.
line, the modem enters on-line command mode
n=0
Act on received XON and XOFF characters
n=2 /DTR must be active to maintain connection *
n=1
Pass XON/XOFF characters in data stream
n=3 Modem is reset when /DTR deactivated
\Kn - Response to receipt of Break Signal (Data Mode)
&F - Restore Factory Configuration - Returns
Determines how the modem will handle an received
configuration to its factory settings.
break signal.
n=0
Enter on-line command mode, do not
&Kn - Local Flow Control - Determines the operation of
transmit break
flow control between the modem and local host.
n=1
Clear data buffers, transmit break
n=0
No Flow Control
n=2
same as n=0
n=3
RTS/CTS (hardware) Flow Control *
n=3
Immediately transmit break
n=4
XON/XOFF (software) Flow Control
n=4
same as n=0
n=5
Transmit nondestructive break in sequence
&Sn - Data Set Ready - Determines how the modem will
with data
present /DSR to the host.
n=0
Force /DSR active *
n=1
/DSR Indicates the modem’s readiness to
communicate
&Tn - Modem Test Modes - Modem diagnostics.
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XE5617H
XE5617H AT Commands
\N - Error Control Mode - Selects which protocols will
+DR=a - Select Data Compression Report Type -
be used during data connections.
Determines if a response will be issued to report the Data
n=0
Buffer Data, No Error Control
Compression status
n=1
Direct mode, No Error Control, No buffered
a - Data Compression Report
data
0 = Disabled
n=2
MNP Error Cor