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AL2094S Designers Guide

Doc. No. DG_2094E

Altec Electronic AG

Seite 20 / 30

3.3.2 Interface and Timing Waveforms

3.3.2.1 Serial DTE Interface

The serial DTE interface waveforms for 4800 and 9600 bps are illustrated in Figure 3-5.

F

IGURE

3-5. W

AVEFORMS

- S

ERIAL

DTE I

NTERFACE

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Содержание AL2094S Series

Страница 1: ...AL2094S Designers Guide Doc No DG_2094A Altec Electronic AG 1 30 Analog Socket Modem AL2094S Series Designer s Guide RELEASED 2 SEPTEMBER 2005...

Страница 2: ...or otherwise under any patent rights of Altec Electronic other than for circuitry embodied in Altec products Altec Electronic reserves the right to change circuitry at any time without notice This do...

Страница 3: ...Connection Speeds 10 2 2 9 Automode 10 2 3 Data Mode 11 2 3 1 Speed Buffering Normal Mode 11 2 3 2 Flow Control 11 2 3 3 Escape Sequence Detection 11 2 3 4 BREAK Detection 11 2 3 5 Telephone Line Moni...

Страница 4: ...y 27 6 2 1 Conditions for Maintaining Safety Compliance European Countries 27 6 2 2 Power Supply EN60950 1 2001 1 6 28 6 2 3 Clearances Creepage Distances and Distances through Insulation EN60950 1 20...

Страница 5: ...nd error correction V 42 MNP 2 4 modes are supported to maximize data throughput and data transfer integrity V 44 is a more efficient data compression than V 42 bis that significantly increases downst...

Страница 6: ...can be stored in internal SRAM Caller ID detect On hook Caller ID detection Off hook Call Waiting Caller ID detection during data mode in V 90 V 34 V 32bis and V 32 Distinctive ring detect Built in DT...

Страница 7: ...coming call is accepted by the user the user has a pre defined amount of time of holding the data connection for a brief conversation The data connection resumes upon incoming call termination The ser...

Страница 8: ...progress tone detection answer tone detection blacklisting caller ID and relay control are programmable SmartDAA technology allows a single PCB design and single BOM to be homologated worldwide Advan...

Страница 9: ...n V 17 fax mode the modem can sense speeds up to 115 2 kbps 2 2 Establishing Data Modem Connections 2 2 1 Telephone Number Directory The modem supports four telephone number entries in a directory tha...

Страница 10: ...be detected from a TTL compatible 15 3 Hz to 68 Hz square wave input 2 2 7 Billing Protection When the modem goes off hook to answer an incoming call both transmission and reception of data are preven...

Страница 11: ...ll Forward Fallback V 90 V 34 V 32 bis V 32 During initial handshake the modem will fallback to the optimal line connection within V 90 V 34 V 32 bis V 32 mode depending upon signal quality if automod...

Страница 12: ...n the amount of time between characters coming from the DTE 2 5 3 V 44 Data Compression V 44 data compression encodes pages and files associated with Web pages more efficiently than V 42 bis These fil...

Страница 13: ...ermination reasons remote phone line unplugged remote server modem shutdown For Voice applications this method can be used in addition to silence detection to determine when a remote caller has hung u...

Страница 14: ...abort dial attempt aborted by user Actions resulting from such failures can include specification of minimum inter call delay extended delay between calls and maximum numbers of retries before the nu...

Страница 15: ...d DTE interface signals are Serial Transmit Data input TXD Serial Receive Data output line RXD Clear to Send output CTS Received Line Signal Detector DCD Ring Indicator RI Data Terminal Ready control...

Страница 16: ...n No NAME Pin No NAME 1 GND 40 RXD 2 GND 39 TXD 3 VCC1 38 DTR 4 VCC2 37 DCD 5 EXTRESET 36 DSR DCD 6 NC 35 CTS 7 DSPKOUT 34 RTS 8 TDCLK 33 RI 9 RDCLK 32 NC 10 18 No pin 31 23 No pin 19 NC 22 NC 20 RING...

Страница 17: ...command mode RXD data represents the modem responses to the DTE CTS 35 O Ith Ot8 Clear To Send EIA CB ITU T CT106 CTS output ON low indicates that the modem is ready to accept data from the DTE In asy...

Страница 18: ...94S Modem I O Type Definitions I O Type Description It Ot2 Digital input 5V tolerant Digital output 2 mA ZINT 120 Itpu Ot2 Digital input 5V tolerant 75k pull up Digital output 2 mA ZINT 120 Ith Ot8 Di...

Страница 19: ...against damage due to high static voltages However it is advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltage An unterminated input can acquir...

Страница 20: ..._2094E Altec Electronic AG Seite 20 30 3 3 2 Interface and Timing Waveforms 3 3 2 1 Serial DTE Interface The serial DTE interface waveforms for 4800 and 9600 bps are illustrated in Figure 3 5 FIGURE 3...

Страница 21: ...recommended telco interface for U S Socket Modems is shown in Figure 3 3 The recommended telco interface for World Class Socket Modems is shown in Figure 3 4 TIP and RING signal traces are to be no cl...

Страница 22: ...ode Coke Epcos Microspire B82790 C0475 N265 ESC X1 M47 1S C1 C2 High Voltage Capacitor MLCC X2 Y3 Types Johansson Novacap Syfer 302R29W102KV3E LS1808N102K302 1808JA250102KCT F1 Fuse U S Models Europe...

Страница 23: ...s and component supplier application notes Seminars addressing noise suppression techniques are often offered by technical and professional associations as well as component suppliers 4 1 PC Board Lay...

Страница 24: ...itors Methods to decouple power lines are similar to decoupling telephone lines 7 Locate high frequency circuits in a separate area to minimize capacitive coupling to other circuits 8 Locate cables an...

Страница 25: ...cket to the host board and inserting the Socket Modem into the socket The second way is to solder the Socket Modem directly to the host board The most efficient way to do this is through a wave solder...

Страница 26: ...c Electronic AG Seite 26 30 5 5 P PA AC CK KA AG GE E D DI IM ME EN NS SI IO ON NS S Package Dimensions are shown in Figure 5 1 Figure 5 1 AL2094S Socket Modem Physical Dimensions 20 3 mm 3 5 mm 3 4mm...

Страница 27: ...signals Other components not intended for use with this design may affect the network access characteristics of the modem and may therefore invalidate the type approvals permits and or licences In bo...

Страница 28: ...rts of other assemblies inside the host b if applicable the PSTN connection traces TIP and RING routed through the host system motherboard and any other conductive area i e traces through holes SMD pa...

Страница 29: ...e host using or generating voltages greater than 300 V rms or dc advice from a competent telecommunications safety engineer must be obtained If these clearance and creepage distances cannot be provide...

Страница 30: ...EN 55024 1998 A1 2001 EN 61000 6 2 2001 industrial environment 6 3 2 Installation in Host Systems European Countries It is assumed that the Socket Modem will only assembled in host systems that comply...

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