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W681512 Dataheets PDF



Part Number W681512
Manufacturers Nuvoton Technology
Logo Nuvoton Technology
Description SINGLE-CHANNEL VOICEBAND CODEC
Datasheet W681512 DatasheetW681512 Datasheet (PDF)

W681512 SINGLE-CHANNEL VOICEBAND CODEC www.DataSheet.co.kr Data Sheet Revision C17 Datasheet pdf - http://www.DataSheet4U.net/ W681512 1. GENERAL DESCRIPTION The W681512 is a general-purpose single channel PCM CODEC with pin-selectable -Law or A-Law companding. The device is compliant with the ITU G.712 specification. It operates from a single +5V power supply and is available in 20-pin SOG (SOP), SSOP and TSSOP package. Functions performed include digitization and reconstruction of voice .

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W681512 SINGLE-CHANNEL VOICEBAND CODEC www.DataSheet.co.kr Data Sheet Revision C17 Datasheet pdf - http://www.DataSheet4U.net/ W681512 1. GENERAL DESCRIPTION The W681512 is a general-purpose single channel PCM CODEC with pin-selectable -Law or A-Law companding. The device is compliant with the ITU G.712 specification. It operates from a single +5V power supply and is available in 20-pin SOG (SOP), SSOP and TSSOP package. Functions performed include digitization and reconstruction of voice signals, and band limiting and smoothing filters required for PCM systems. The filters are compliant with ITU G.712 specification. W681512 performance is specified over the industrial temperature range of –40C to +85C. The W681512 includes an on-chip precision voltage reference and an additional power amplifier, capable of driving 300 loads differentially up to a level of 6.3V peak-to-peak. The analog section is fully differential, reducing noise and improving the power supply rejection ratio. The data transfer protocol supports both long-frame and short-frame synchronous communications for PCM applications, and IDL and GCI communications for ISDN applications. W681512 accepts seven master clock rates between 256 kHz and 4.096 MHz, and an on-chip pre-scaler automatically determines the division ratio for the required internal clock. ApplIcations 2. FEATURES            Single +5V power supply Typical power dissipation of 30 mW, power-down mode of 0.5 W Fully-differential analog circuit design and output signals Differential Analog Outputs On-chip precision reference of 1.575 V for a 0 dBm TLP at 600 (775mVRMS) Push-pull power amplifiers with external gain adjustment with 300  load capability Seven master clock rates of 256 kHz to 4.096 MHz Pin-selectable -Law and A-Law companding (compliant with ITU G.711) CODEC A/D and D/A filtering compliant with ITU G.712 Industrial temperature range (–40C to +85C) Pb-Free Packages: 20-pin SOG (SOP), SSOP and TSSOP   www.DataSheet.co.kr VoIP, Voice over Networks equipment Digital telephone and communication systems Wireless Voice devices DECT/Digital Cordless phones Broadband Access Equipment Bluetooth Headsets Fiber-to-curb equipment Enterprise phones Digital Voice Recorders        -2- Publication Release Date: January 2011 Revision C17 Datasheet pdf - http://www.DataSheet4U.net/ W681512 3. BLOCK DIAGRAM Receive PCM Interface BCLKR FSR PCMR BCLKT FST PCMT Re Int PC cei erf M ve ace Transmit PCM Interface Tra Int ns PC erf mitM ace G.712 CODEC G.711 /A - Law PAO+ PAOPAI RORO RO+ AO AI+ AI/A-Law 512 kHz 256 kHz MCLK 256 kHz, 512 kHz, 1536 kHz, 1544 kHz, 2048 kHz, 2560 kHz & 4096 kHz Pre -Scaler scaler 8 kHz Voltage reference V AG Power Conditioning www.DataSheet.co.kr VDD PUI VSS -3- Publication Release Date: January 2011 Revision C17 Datasheet pdf - http://www.DataSheet4U.net/ W681512 4. TABLE OF CONTENTS 1. GENERAL DESCRIPTION .................................................................................................................. 2 2. FEATURES ......................................................................................................................................... 2 3. BLOCK DIAGRAM ............................................................................................................................... 3 4. TABLE OF CONTENTS ...................................................................................................................... 4 5. PIN CONFIGURATION ....................................................................................................................... 6 6. PIN DESCRIPTION ............................................................................................................................. 7 7. FUNCTIONAL DESCRIPTION ............................................................................................................ 8 7.1. Transmit Path................................................................................................................................. 8 7.2. Receive Path .................................................................................................................................. 9 7.3. Power Management ..................................................................................................................... 10 7.3.1. Analog and Digital Supply ..................................................................................................... 10 7.3.2. Analog Ground Reference Voltage Output............................................................................ 10 7.4. PCM Interface .............................................................................................................................. 10 7.4.1. Long Frame Sync .................................................................................................................. 10 7.4.2. Short Frame Sync ............................


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