Sharp UX-258TH, FO-475TH manual Modem R96V24 block, Introduction

Page 48

(4) Modem (R96V24) block

INTRODUCTION

The Rockwell R96V24 MONOFAX ® facsimile modem family provides 9600 bps half-duplex capability with options supporting DigiTalk™ voice and ADPCM audio codecs, DigiTalk™ full-duplex speakerphone, and V.23 full-duplex. The modem models are identified in Table.

These functions are supplied in a single VLSI device or two-device set (for speakerphone). The MDP (modem data pump) is packaged in a 100-pin PQFP. The MDP contains an internal integrated analog codec (IIA) and is pin-compatible with the R96V24 MONOFAX modems.

This device family enables cost-effective development of a common fac- simile machine design with digital answering machine and/or full-duplex speakerphone.

The modem can operate at 9600, 7200, 4800, 2400, or 300 bps, and can perform HDLC framing per T.30 at all rates. A programmable DTMF detector, three programmable tone detectors, and Caller ID demodulator are provided.

The DigiTalk™ V24 voice coder/decoder (codec) compresses voice at an average rate of 2.9 kbps or at a fixed rate of 4.7 kbps with near toll quality playback. An average rate of 2.9 kbps provides 24 minutes of stored voice messages in 4 Mbits of memory. This voice codec allows the host controller to efficiently store and playback digital incoming mes- sages (ICMs) and outgoing messages (OGMs).

The ADPCM audio codec compresses audio signals (e.g., music/voice) at 32 kbps or 24 kbps for highest fidelity coding and reproduction. Selectable error correction coding allows storage in audio grade RAMs (ARAMs). Echo cancellation techniques employed during playback al- low DTMF and tone detection during voice/audio codec operation to support user selectable features. The coder can record messages from either the IIA or XIA. Dual/single tone transmission is available when the decoder is disabled.

UX-258TH

FO-475TH

FEATURES

•Group 3 facsimile transmission/reception

–ITU-T V.29, V.27 ter, T.30, V.21 Channel 2, T.4

–HDLC framing at all speeds

–Receive dynamic range: 0 dBm to –43 dBm

–Automatic adaptive equalization

–Fixed and programmable digital compromise equalization

•V.27 ter short train

•V.21 channel 2

–DTMF detect and tone detect

•Caller ID reception

–Compromise equalizer

•DigiTalk™ voice codec

–24 minutes of voice storage per 4 Mbit memory

–Near toll quality voice recording and playback

–Programmable AGCs

–Error correction coding allows ARAM usage

–DTMF detect, tone detect, and tone transmit

–Pitch synchronized fast and slow playback

–Near-end echo cancellation

•ADPCM audio codec

–High fidelity recording and playback of audio signals

–32 kbps and 24 kbps

–Programmable AGC

–DTMF detect, tone detect, and tone transmit

–Near-end echo cancellation

•8-bit or 16-bit high quality audio mode transmission/reception

5 – 6

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Contents Facsimile Il y a danger d’explosion s’ il y a remplacement incorrect Specifications Operation panel Transmittable documents Installation Use of Document Carrier SheetSite selection ConnectionsOriginal document support Loading the fax paperClearing a jammed document Clearing jammed fax paperUsing the answering machine Quick reference guideFunction key menu Transmitting documentsAdjustments Diagnostics and service soft switch Operating procedure Entering the diagnostic modeDiagnostic items Diagnostic items description Soft switch mode Aging modeCheck pattern mode Signal send modeHow to make soft switch setting Entry data receiveFlash memory check Flash memory clearSoft switch description DataOption No. = X 60 sec = 5 min Recall times Binary input Light Dark Darker TEL 0~9 No. = CNG detection in STAND-BY mode Yes Fax switching when A.M. full Yes 10 ~ 25 dBm No. = 12 dB AGC eref access code line Reserved Speaker volume 5 stages Soft switch function description SW-A6 No CNG transmission in manual TX mode SW-B4 No Auto dial mode Delay timer of before line connectSW-B4 No Auto dial mode Delay timer of after line connect SW-B4 No Dial modeSW-D1 No Automatic switching manual to auto receive mode SW-E1 No Tel/Fax Automatic switching modeSW-E1 No CNG detect time at TEL/FAX mode SW-F2 No CNG detection in STAND-BY modeSW-H2 No Fax switching when A.M. full SW-I2 No Alarm during two way recordingSW-H1 No Reserved SW-H1 No Busy tone continuous sound detect timeSW-J1 No Sender’s phone number setting SW-J1 No , No Ringer volumeSW-J2 No ~ No Speaker volume 5 stages SW-K1 No Entering Diag mode by pressing Speed keyTroubleshooting ATTError code table Communication error code table G3 TransmissionG3 Reception General description Documents requiring use of document carrier Document release GeneralCross section view Recording block 5-1. General viewDisassembly and assembly procedures Handset cover and paper support guidePWB case top, bottom and PWB Screwdriver Hook CIS support 11 ,13 Stopper plate Operation panel unit and scanner frameDocument guide upper unit and head frame Document guide upper Operation panel GAP Hopper Guide R Guide LLCD PWB 1211 Drive unit, PWB and cutterRib Speaker and paper sensor leverDrive frame 1811Wire treatment TEL/LIUPWB Block diagram CutterWiring diagram Power Supply PWB UnitControl PWB Unit TEL/LIU PWB UnitPoint- to-point diagram Circuit description Circuit description of control PWB Description of each block Main control blockFC200 IC2 Terminal descriptions Ledctl 4XC Lcdcs 1XCGPIO0 2XC GPIO1/SASTXD 2XCPanel control block Mechanism/recording control blockModem R96V24 block IntroductionR96V24 IC1 Hardware Interface Signals Pin Signals 100-Pin PqfpBlock diagram Circuit description of TEL/LIU PWBTEL/LIU block operational description Circuit descriptionSignal/DTMF transmission level & receiving level Signal selectionExternally connected TEL OFF Hook detection circuit section CI detection circuitExample TEL speaking Circuit description of power supply PWB Circuit description of CIS unitCircuit Block ControlPWBMemory block 44PIN TsopModem IC3Other block 2902Video processing/Motor drive / Thermal block ULN2003AAnalog signal block IC5Control PWB parts layout Top side Control PWB parts layout Bottom side These marks are all safety-critical parts TEL/LIU PWB circuitTEL/LIU PWB parts layout Power supply PWB circuit NJM78M05FAPower supply PWB parts layout Operation panel PWB circuit IC101 74HC147Operation Flowchart ProtocolPower on sequence Service tools ListRelay board unit Description Relay board unit OFFShading paper IC signal name IC13 VHiULN2003AN/ ULN2003AIC7 VHiW24257S7LL W24257S-70LLT IC3 VHiMC74HCU04FMC74HCU04F IC6, 10 VHiHCF4053M1T HCF4053BIC11, 12 VHiLM2902D/-1 LM2902D IC8 VHi27C02015Ti IC5 VHiHEF4051BT1 HEF4051BTIC4 VHiMC34119DR2 MC34119DR2 IC100 VHiPST596CMT1 PST596CNRIC1 VHiR96FC20V24 R96V24 IC2 VHiR96FC20V24 FC200 IC1 VHiNJM2904D-1 NJM2904D
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