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XE0055CS2
9/99
Miniature Telephone Line Interface Module for CTI Applications
Description Features The XE0055CS2 is an extremely compact, high-perfor- * Small Size: 2.0" long by 0.5" wide by 0.27" thick; mance telephone interface module. The XE0055CS2 meets the technical requirements for V.34bis operation * V.34bis compatible for data transfer at speeds up to 33,600 bps; yet fills less than one quarter cubic inch of space. The XE0055CS2 complies with FCC Part 68 Rules simpli- * FCC Part 68 Compliant; fying certification of the completed system. * Integrated Ring Detect Circuit; The XE0055CS2 is a low power design operating from a single +5 volt power supply. As with all Xecom tele- * Provides an on-hook signal path for monitoring the Caller ID Signal phone interface modules, internal ring indication and switch hook are provided to establish the telephone line * Integrated Connect Detect circuit continually monitors connection. the availbility of the local telephone line The XE0055CS2 also includes advanced features for * Single 5 Volt Power Supply Computer Telephone Integration (CTI) applications. The XE0055CS2 incorporates Caller ID access and a * Integrated Solid-State Switch Hook continuous Connect Detect monitor. Connect Detect * Provides a 1500 volt isolation barrier between the reports the current availability of the local telephone Telephone Line and all other circuits line. With these features the host can screen incoming calls and intiate outgoing calls only when the line is available.
XE0055CS2 Block Diagram
Caller ID Pass-Through
T1 T2 OH
Line Transforner
Loop Current Holding Circuit
Tip Ring
Hookswitch
\RI
Ring Detector
CD
Connect Detect
XECOM
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XE0055CS2
XE0055CS2 Mechanical Specifications
C A H D F E
Inches Min Max 0.290 0.310 0.490 0.510 1.990 2.010 0.040 0.060 1.390 1.410 0.090 0.110 0.790 0.810 0.125 0.200 0.022 0.028 0.490 0.510 Millimeters Min Max 7.37 7.87 12.45 12.95 50.55 51.05 1.02 1.52 35.31 35.81 2.29 2.79 20.07 20.57 3.18 5.08 0.56 0.71 12.45 12.95 Pin Size: 0.025" by 0.025" Recommended hole size: 0.056"
B
G J
D
I
Dim A B C D E F G H I J
ABSOLUTE MAXIMUM RATINGS
Storage Temperature Operating Temperature Range Maximum Lead Temperature (soldering 2 seconds per wave) -25OC to +85OC 0OC to +70OC 260OC
Note: The XE0204 is available with an extended operating temperature range of -40C to +85C. To specify the version with the extended operating temperature range order XE0204-ITR.
XECOM
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XE0055CS2
XE0055CS2 Pin Configuration
XE0055CS2 1 2 o o Ring Tip 3 4 5 6 7 o o o o o OH T1 Gnd Vcc T2 8 o /RI 9 o CD
XE0055CS2 Pin Descriptions Pin
1
Name
Ring
Description
Ring is one of two signals which form the telephone network connection (RJ11 Pin 4). This device is not sensitive to the polarity of the battery voltage on the telephone line. Ring has 1500 volts isolation from the rest of the circuitry. This isolation must be preserved throughout the system. Tip provides the second connection to the telephone network (RJ11 Pin 3). Tip has 1500 volts isolation from the rest of the circuitry. This isolation must be preserved throughout the system. Hook-switch relay control input. A high on OH closes the internal relay and connects the equipment to the telephone line. T1 connects directly to the secondary side of the XE0055CS2 telephone line transformer. This pin is used as common reference for all of the control signals in the XE0055CS2. Signals on T1 and T2 are not referenced to ground. VCC provides the power source for the hook-switch control. The XE0055CS2 will operate with VCC equal to either 3.3 or 5 volts T2 connects directly to the secondary side of the telephone line transformer of the XE0055CS2 Ring Indicate, output, active low, TTL, RI provides a half-wave representation of the Ring appearing on the telephone line. An external pull-up resistor is required to correctly bias the ring indicate output. The Connect Detect output indicates the status of the local telephone line. A high on CD indicates that the local telephone line is connected and is not currently in use. A low on CD indicates that the local telephone line is either disconnected from the XE0055CS2 or is being used by some other telephone equipment.
2
Tip
3 4 5 6
OH T1 GND VCC
7 8
T2 /RI
9
CD
XECOM
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XE0055CS2
XE0055CS2 Electrical Specification (Vcc=+5v 10%, Ta=0 to 70 deg C) Parameter
Power Supply Current Transmit Insertion loss Receive Insertion loss Line Impedance Coupler Match Input impedance Ring Detect Sensitivity
Conditions
Off Hook, 5.0 Volts 600 Ohm Impedence, 1000 Hz 600 Ohm Impedance, 1000 Hz At 1000 Hz, Rm 340 ohms Input impedance to T1 & T2
Min
Typ
10
Max
15 3.7 3.7 660 394
Units
mA dB dB Ohms Ohms
1.7 1.7 540 386
2.7 2.7 600 390
Min. AC voltage between Tip & Ring Type B ringer Ringing Voltage of 40 Vrms applied across Tip and Ring No Ringing Voltage present Ring Voltage present on Tip and Ring ON: (off-hook) OFF: (on-hook) Off-Hook
38
150
Vrms
Ring Detect Peak Current
100
uA
Ring Detect Idle Current Ring Indicate Output Hook Switch Control Voltage Hook Switch Control Current Loop Current
10 0.2 2.0 3.0 0.2 15 0.5 25 0.5
uA Volts Volts Volts mA
Off-Hook current draw from the Telephone Line At 1800 Hz, -9 dBm signal level
20
100
mA
Total Harmonic Distortion
-72
-76
dBm
XECOM
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XE0055CS2
XE0055CS2 Typical Connection Diagram
RV1 FB1 RJ11 FB1 C1 C2 10 ohms +5 Volts 10 ohms
XE0055CS2 o Pin 1 Ring o Pin 2 Tip
RC144D
OH TXA1 VC RXA TXA2 RINGD 340 ohms 10k ohms
56k ohms
o o o o o o
Pin 3 OH Pin 4 T1 Pin 5 Gnd Pin 6 VCC Pin 7 T2 Pin 8 /RI
To Embedded System Host
o Pin 9 CD
Notes:
FB1 and FB2 are ferrite beads. They work in conjunction with Capacitors C1 and C2 to eliminate EMI from the telephone cable. Xecom recommends a TDK CB30-1812 surface mount ferrite bead because it provides over 100 ohms impedance at 100 MHz. C1 and C2 ground any EMI signal present on Tip and Ring. Xecom recommends a Sprague 30GAT47 capacitor. This is a 470 pFd capacitor rated for 3000 Volts. The high voltage rating is required to maintian the required isolation barrier between the telephone line and ground. RV1 is a solid-state protection device to reduce the likelihood of damage due to lightning strikes. RV1 works in conjunction with the two 10 ohm resistors to protect the XE0055CS2 circuitry. Xecom recommends the Teccor P3100 Sidactor for this function. Its typical breakover voltage of 310 volts prevents the XE0055CS2 from being exposed to voltage surges while being rated high enough to prevent being triggered by an incoming Ring signal.
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XE0055CS2
FCC Part 68 Instructions
When developing a product to be connected to the telephone line, it is necessary to use a circuit known as a Data Access Arrangement (DAA) approved by the appropriate governmental agency. In the US this agency is the Federal Communications Commission (FCC), while in Canada it is Industry Canada (IC). These agencies test and approve the product to ensure that it meets their specifications, thereby protecting the telephone system from damage and protecting the user from high voltage transients (such as lightning strikes) which may come down the telephone line. The XE0055CS2 has been designed to meet all FCC Part 68 requirements for hazardous voltage, line impedance and leakage current. If the system transmits data, synthesized voice, or DTMF tones on the telephone line, the user must certify that the signals transmitted meet basic FCC requirements for maximum transmission levels, out of band energy and billing delay. Full details may be obtained from the FCC under Part 68 of the FCC Rules and Regulations, or in Title 47 of the Code of Federal Regulations, however the basic requirements are as follows: 1. Maximum Transmit Level For the normal "permissive" (standard) telephone line, equipment which transmits data (such as a modem) must not exceed a transmission level of -9 dBm. 2. Out of Band Energy Data equipment must not transmit "out of band" energy on the telephone line which exceeds the following limits: Frequency Range Max. Power 3995 Hz to 4005 Hz -27 dBm 4005 Hz to 12 kHz -20 dBm 12 kHz to 90 kHz -55 dBm 90 kHz to 270 kHz -55 dBm 270 kHz to 6 MHz -15 dBm 3. DTMF Transmission Level If the system is capable of DTMF dialing, the maximum DTMF transmission level must be less than 0 dBm averaged over a 3 second interval. 4. Billing Delay A delay of 2 seconds or greater is required after the time the XE0055CS2 is taken "off hook" and before any information is transmitted. This is required to ensure that billing information may be exchanged between telephone company central offices without interference. The user of the XE0055CS2 must certify to the FCC that the final system meets the requirements of Part 68 which include the criteria above as well as the high voltage protection provided by the XE0055CS2. This is generally accomplished through an independent testing lab which tests the System and submits the proper paperwork to the FCC for approval. Since the XE0055CS2 already complies with FCC Part 68 rules, this is a relatively simple process.
XECOM
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XE0055CS2
Terms of Sale
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.
Life Support Policy
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.
Copyright, Xecom (c) 1999 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:408-942-1346 Email: info@xecom.com
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XE0055CS2

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