Hayes Microcomputer Products RCV56HCF HOST-BASED Dsvd Mode, FULL-DUPLEX Speakerphone Fdsp Mode

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RCV56HCF PCI/CardBus Modem Designer’s Guide

2.6.1 Online Voice Command Mode

This mode results from the connection to the telephone line or a voice/audio I/O device (e.g., microphone, speaker, or handset) through the use of the +FCLASS=8 and +VLS commands. After mode entry, AT commands can be entered without aborting the connection.

2.6.2 Voice Receive Mode

This mode is entered when the +VRX command is active in order to record voice or audio data input at the RXA_L1 pin, typically from a microphone/handset or the telephone line.

Received analog voice samples are converted to digital form and compressed for reading by the host. AT commands control the codec bits-per-sample rate.

Received analog mono audio samples are converted to digital form and formatted into 8-bit unsigned linear or μ-Law PCM format for reading by the host. AT commands control the bit length and sampling rate. Concurrent DTMF/tone detection is available.

2.6.3 Voice Transmit Mode

This mode is entered when the +VTX command is active in order to playback voice or audio data to the TXA1_L1 output, typically to a speaker/handset or to the telephone line. Digitized audio data is converted to analog form then output to the TXA1_L1 output.

2.6.4 Tone Detectors

The tone detector signal path is separate from the main received signal path thus enabling tone detection to be independent of the configuration status. In Tone Mode, all three tone detectors are operational.

2.6.5 Speakerphone Modes

Speakerphone modes are selected in voice mode with the following commands:

Speakerphone ON/OFF (+VSP). This command turns the Speakerphone function ON (+VSP = 1) or OFF (+VSP = 0).

Microphone Gain (+VGM)=<gain>. This command sets the microphone gain of the Speakerphone function. <gain> is an unsigned octet where values greater than 128 indicate a gain larger than nominal and values smaller than 128 indicate a gain smaller than nominal.

Speaker Gain (+VGS=<gain>). This command sets the speaker gain of the Speakerphone function. <gain> is an unsigned octet where values greater than 128 indicate a gain larger than nominal and values smaller than 128 indicate a gain smaller than normal.

2.7 SIMULTANEOUS AUDIO/VOICE AND DATA (AudioSpan)

The modem can operate in AudioSpan Mode if the remote modem is also configured for AudioSpan Mode operation.

AT commands are used to select the AudioSpan Mode, to enable automatic AudioSpan modulation selection or select a specific AudioSpan modulation, and to enable AudioSpan data burst operation.

V.61 modulation supports 4800 bps data speed with audio, and a data-only speed of 4800 bps.

The AudioSpan audio interface defaults to the local handset connected to the modem and can be configured to interface through the modem microphone and speaker pins to support use of a headset or a speakerphone.

2.8 HOST-BASED DSVD MODE

Host-based DSVD operation is enabled by the -SSE or -SMS command. In Host-based DSVD Mode, the modem supports the transfer of data and voice occurs simultaneously during a data connection.

2.9 FULL-DUPLEX SPEAKERPHONE (FDSP) MODE

The modem operates in FDSP mode when +FCLASS=8 and +VSP=1 (see 2.6.5).

In FDSP Mode, speech from a microphone or handset is converted to digital form, shaped, and output to the telephone line through the line interface circuit. Speech received from the telephone line is shaped, converted to analog form, and output to the speaker or handset. Shaping includes both acoustic and line echo cancellation.

2.10 VOICEVIEW

Voice and data can be alternately sent and received in a time-multiplexed fashion over the telephone line whenever the +FCLASS=80 command is active. This command and other VoiceView commands embedded in host communications

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Contents RCV56HCF RCV56HCF PCI/CardBus Modem Designer’s Guide Table of Contents Command SET Rockwell Proprietary Information List of Figures List of Tables Summary FeaturesRCV56HCF PCI/CardBus Modem Designer’s Guide Marketing Modem Models and FunctionsModel Number1 FdspPC Software RCV56HCF Hardware Configuration Block Diagram Data Pump BUS Technical Overview General DescriptionOperating Modes Host-Controlled Modem Software Downloadable Modem Data Pump FirmwareHardware Interfaces RCV56HCF PCI/CardBus Modem Designer’s Guide Typical Audio Signal Interface U.S Relay Positions VoiceView Mode Typical Signal Routing Voice Mode+VLS= VOICE# CIDL1#This page is intentionally blank Establishing Data Modem Connections Data ModeVOICE/AUDIO Mode Error Correction and Data CompressionMNP 10EC Enhanced Cellular Connection FAX Class 1 OperationHOST-BASED Dsvd Mode FULL-DUPLEX Speakerphone Fdsp ModeVoiceview LOW Power Sleep Mode DiagnosticsCaller ID World Class Country SupportHardware Interface Hardware Signal Pins and DefinitionsTqfp 11229 BUS InterfaceRCV56HCF MDP PIN Tqfp R6776Bus Interface 176-Pin Tqfp Hardware Interface Signals Bus Interface 176-Pin Tqfp Pin Signals Pin Signal Label Type1 Interface DEVSEL# Bus Interface Pin Signal Definitions SystemPCI BUS Interface Serial Eeprom Interface NMC93C56 or Equivalent Bus Interface Pin Signal Definitions Cont’dDAA Interface ReservedMDP Interface Isdn Interface Isdn Models Isdn Interface NON-ISDN ModelsMDP 144-Pin Tqfp Hardware Interface Signals MDP 144-Pin Tqfp Pin Signals Pin Signal Label Interface3 Type1 MDP Pin Signals 144-Pin TqfpPllgnd PLL Overhead Signals MDP Pin Signal DefinitionsBIF to MDP Interface MDP to Siemens PSB2186 S/T InterfacePllgnd Connection. Connect to Agnd MDP Signal Definitions ContdModem INTERCONNECT/NO Connect Power and Maximum Ratings ELECTRICAL,SWITCHING,AND Environmental CharacteristicsCurrent and Power Requirements Maximum RatingsPCI Bus AC Specifications for 3.3V Signaling PCI Bus DC Specifications for 3.3V SignalingSymbol Parameter Condition Min Max Units PCI BusMDP Digital Electrical Characteristics Parameter Symbol Min Typ Max Units Test Conditions3 MDP Name Type Characteristic Value 10. Analog Electrical CharacteristicsTELINL1 TXA1L1PCI Bus Timing Interface Timing and WaveformsSerial Eeprom Timing 11. Timing Serial Eeprom InterfaceExternal Device Bus Timing Symbol Description Min Typ Max Units Test Conditions Read12. Timing External Device Bus Interface WriteISDNCS# DWR# DD0-DD7 ISDNCS# DRD# DD0-DD713. Timing IOM-2 Interface IOM-2 InterfaceThis page is intentionally blank Component Placement PC Board Layout GuidelinesGeneral Principles Signal Routing Modem Pin Noise Characteristics PowerDevice Function Noise Source Neutral Noise Sensitive MDP VDD, VAAGround Planes Crystal Circuit7 VCL1 and Vref Circuit Optional Configurations CRYSTAL/OSCILLATOR SpecificationsOther Considerations Telephone and Local Handset InterfaceCharacteristic Value Crystal Specifications Surface MountElectrical MechanicalCrystal Specifications Through Hole Package Dimensions 144-Pin Tqfp Package DimensionsRCV56HCF PCI/CardBus Modem Designer’s Guide This page is intentionally blank Vendor ID Field PCI Configuration RegistersDevice ID Field Bit Offset 3124 2316 158 HexCommand Register Status RegisterBit Description Base Address Register Serial Eeprom Interface Eeprom Configuration DataEeprom Address Copied to CIS RAMCommand Set Summary Functional Use Sort Command SETData Compression Command Set Summary Functional Use Sort Cont’dVoice Commands Command Set Summary Alphanumeric Sort Command Set Summary Alphanumeric Sort Cont’d RCV56HCF PCI/CardBus Modem Designer’s Guide Inside Back Cover Regional Sales Offices
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