CYG23XX CYBERGATE™ Features • Low distortion transformer signal coupling • Complete ring detector circuit • Low power hookswitch • Electronic inductor/gyrator circuit • Surge protection • V.32 bis /V.34 compatible • PC board mountable • 16kHz metering filter Description Clare’s CybergateTM 23XX DAA modules provide a complete telephone line interface circuit in a small 1.07" x 1.07" x 0.4" package. This module provides a fast and cost effective solution for designs that require an interface to the telephone line. The CYG23XX0 is designed to meet PTT and safety regulations in Germany. Applications • Home medical devices • Plant monitoring equipment • Security/alarm systems • Utility meters • Modems • Voicemail systems • Vending machines • Elevator control boxes • Network routers • PBX Systems • PC mother boards • Telephony applications • Digital telephone answering machines Approvals • BSI Approved to EN60950 Certification #: 8123 Ordering Information Part # CYG2300 CYG2320 Description DAA Module Germany DAA Module Australia Block Diagram FROM µC 6 TX1 HYBRID CIRCUIT TX2 MUTE LINE 1 4.3V 4.3V LINE 2 VCC 1 10 2 VCC RING DETECT NETWORK RX GND RING OH RING RING GYRATOR HOOKSWITCH OH RELAY VCC 7 5 3 SURGE PROTECTOR Rm 560 TO TELEPHONE LINE 11 470Ω TIP 4 56kΩ VCC GND Handling and Assembly Recommendations The CYG23XX products are not hermetically sealed and should not be exposed to any liquid-based rinsing processes. Clare recommends two (2) approaches. The modem should either use a no clean soldering flux that would mostly evaporate during the normal wave soldering processes, or be soldered in by hand after the rest of the card is wave soldered. DS-CPC2300-R1 www.clare.com 1 CYG23XX Absolute Maximum Ratings (@ 25˚ C) Parameter Min Isolation Voltage Operational Temperature 0 Storage Temperature 0 Relative Humidity 10 (Non-Condensing) Soldering Temperature Tip/Ring Load Current (continuous) Hookswitch LED Drive Current Hookswitch LED Reverse VoltageRing Detect Phototransistor Voltage VCC - Absolute Maximum Ratings are stress ratings. Stresses in excess of these ratings can cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this data sheet is not implied. Exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability. Typ Max Units - 1500 VRMS 70 °C 100 °C 85 % - 260 °C - 120 50 5 mA mA V - 20 V Electrical Characteristics Parameter DC Electrical Characteristics On-Hook Impedance On-Hook Line Leakage Current Off-Hook Relay Supply Current Hookswitch Power Source DC Loop Current Mute Relay Supply Current AC Signal Path Electrical Characteristics Return Loss Insertion Loss Transmit Receive Frequency Response Longitudinal Balance On-Hook Off-Hook Total Harmonic Distortion Secondary Load Impedance Primary Source Impedance Ring Detection Circuit Characteristics Ringing Voltage Detection Range Ringing Frequency Detection Range Ringer Impedance RING Output Voltage (Pulsed) Logic ‘0’, Ring present Logic ‘1’, Ring not present Surge, Transient, and Isolation Characteristics Surge Protection Voltage Tip and Ring Isolation Voltage (Pins 1-7 to 10-11) 2 Conditions Min Typ Max Unit VTip-Ring=100VDC VTip-Ring=100VDC VCC=5V VCC=5V 10 7 4.75 5 7 8 5.0 8 10 9 20 120 9 MΩ µA mA V mA mA f=300-3500Hz 14 25 - dB Test Circuit 1 Test Circuit 2 f=300-3500Hz -0.25 - 7 7 +0.25 dB dB dB f=350Hz, P=-10dBm Line 1 and Line 2 Tip and Ring 60 40 - -80 100 600 - dB dB dB Ω Ω 50-70Hz f=25Hz VCC =+5V 29 15 - 18 70 - VRMS Hz KΩ - - 0.8 Vcc V V - - - 300 V 60 Seconds - - 1500 VRMS www.clare.com Rev. 1 CYG23XX Test Circuits 2. CYG23XX Receive Insertion Loss 1. CYG23XX Transmit Insertion Loss VT Rm 560 +5V LINE1 LINE2 RING GND OH MUTE VCC VR Rm 560 +VBATT ILOOP 10H +5V TIP LINE1 LINE2 RING GND OH MUTE VCC +VBATT ILOOP TIP 600 VLR 600 VLT 10H RING RING Transmit Insertion Loss = GTR = 20 Log 10H VLT VT Receive Insertion Loss = G RC = 20 Log VR AC Source 10H V LR -VBATT -VBATT Package Pinouts CYG23XX Pinouts & Definitions CYG23XX LINE 1 LINE 2 RING GND OH MUTE VCC PIN# I/O 1 2 3 4 5 6 7 11 10 TIP RING Name I/O LINE1 Transformer isolated audio signal coupling path for the telephone line. 2 I/O LINE2 Transformer isolated audio signal coupling path for the telephone line. 3 O RING Active LOW indicates an incoming ring signal. This is pulsed LOW by the AC ring signal at the ring frequency. 4 I GND Connected to host system ground. 5 I OH Driving this pin LOW asserts the off-hook condition. The hookswitch LED is current limited by an internal 470W resistor. 6 I MUTE Driving this pin LOW activates the mute relay for pulse dialing. See Figure 1. The mute relay LED is current limited by an internal 470W resistor or 7 I VCC Provides power to the hookswitch LED. Typically +5V for 8mA LED current. LED is current limited by an internal 470W resistor. VCC should not exceed 20V. Top View Rev. 1 Function 1 11 I/O RING Connection to telephone line Ring conductor. 10 I/O Connection to telephone line Tip conductor. TIP www.clare.com 3 CYG23XX Off-Hook Transient Requirement In order to meet Section 4.6.1 of the CTR-21 requirement, it is necessary to assert the MUTE pin of the CYG23XX) for a duration of 80mS after the OH pin is driven low as shown in Figure 1. This can be accomplished via the host firmware or external hardware as shown in Figures 2 and 3 respectively. OH MUTE 80mS MUTE and OH Timing Figure 1 Output Port OH Output Port CYG23XX MUTE µC Figure 2 Output Port One-shot* OH 80ms µC CYG23XX Output Port (Pulse Dial) Shunt MUTE * Micrel MIC1555 or Equivalent Figure 3 Asserting the MUTE pin causes the internal gyrator circuit in the CYG23XX to be bypassed, allowing low impedance pulse dialing to be performed by pulsing the OH pin. In Figure 2, the microcontroller output port going to the MUTE pin is used as a shunt for low impedance dialing and is asserted for 80mS when the OH signal is asserted. This method is preferred when the user has control of the host firmware and can easily write a subroutine to accomplish this function. For users that do not have easy access to the modem firmware, some external hardware can be added to accomplish the same function. Figure 3 shows a monostable (one-shot) such as a 555 timer which is designed to generate an 80mS low going pulse upon the assertion of the OH signal. This 80mS pulse is ANDed with the low impedance pulse dial shunt signal which overrides the 80mS signal when pulse dialing is enabled. The pulse dial shunt signal is included as a standard output pin in most modem chipsets. This pin is activated when an ATDP command is issued to the modem. 4 www.clare.com Rev. 1 Worldwide Sales Offices CLARE LOCATIONS EUROPE ASIA PACIFIC Clare Headquarters 78 Cherry Hill Drive Beverly, MA 01915 Tel: 1-978-524-6700 Fax: 1-978-524-4900 Toll Free: 1-800-27-CLARE European Headquarters CP Clare nv Bampslaan 17 B-3500 Hasselt (Belgium) Tel: 32-11-300868 Fax: 32-11-300890 Clare Micronix Division 145 Columbia Aliso Viejo, CA 92656-1490 Tel: 1-949-831-4622 Fax: 1-949-831-4628 France Clare France Sales Lead Rep 99 route de Versailles 91160 Champlan France Tel: 33 1 69 79 93 50 Fax: 33 1 69 79 93 59 Asian Headquarters Clare Room N1016, Chia-Hsin, Bldg II, 10F, No. 96, Sec. 2 Chung Shan North Road Taipei, Taiwan R.O.C. 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Colombo 10/A I-20066 Melzo (Milano) Tel: 39-02-95737160 Fax: 39-02-95738829 Sweden Clare Sales Comptronic AB Box 167 S-16329 Spånga Tel: 46-862-10370 Fax: 46-862-10371 United Kingdom Clare UK Sales Marco Polo House Cook Way Bindon Road Taunton UK-Somerset TA2 6BG Tel: 44-1-823 352541 Fax: 44-1-823 352797 http://www.clare.com Clare cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in this Clare product. No circuit patent licenses nor indemnity are expressed or implied. Clare reserves the right to change the specification and circuitry, without notice at any time. The products described in this document are not intended for use in medical implantation or other direct life support applications where malfunction may result in direct physical harm, injury or death to a person. Specification: DS-CYG23XX-R1 ©Copyright 2000, Clare, Inc. All rights reserved. Printed in USA. 1/12/01