VOICE CONTROL PROCESSOR LE79112 PRODUCT PREVIEW The Le79112 Voice Control Processor (VCP) is a digital signal processing platform that works with the Zarlink VE790 Series of chip sets using the MPI interface, PCM port, and an interrupt line from the codec/filter. The primary functions of the Le79112 VCP are to program and control the codec/filter via an Application Programming Interface (API). Firmware residing in the DSP’s RAM provides enhanced call processing and test capabilities. Features Software interface using VP API-II Software downloadable, field upgradable, expandable Provides expanded line and circuit testing in conjunction with Zarlink’s VE790 Series of chip sets DTMF detection Quad tone and howler tone generation Arbitrary single tone detection 15-kHz energy detection SNR tests Dial pulse measurement The Le79112 VCP in combination with a VE790 Series chip set, supports up to 32 channels of universal telephone line interface with high-level voice functionality. The solution enables the design of a low-cost, highperformance, fully software programmable line interface for multiple country applications. All of the AC, DC, signaling parameters, and data are fully programmable via the Host Bus Interface (HBI) through the combination of the HBI and a slave PCM port. Additionally, the Le79112 VCP has integrated self-test and line-test capabilities to resolve faults to the line or line circuit. The integrated test capability is crucial for remote applications where dedicated test hardware is not cost effective. Applications There are four firmware options offered for the Le79112 VCP device: LineCare™ Call Control – Le79112SLNT LineCare™ Basic Test – Le79112SLBT LineCare™ Advanced Test – Le79112SLAT LineCare™ Advanced Test Plus – Le79112SLATP Le79228 SLAC™ Device codec 1 Le79112 VCP PCm Highway Voice Signal Processor Microcontroller Backplane I/F Test Functions* codec 2 codec 3 codec 4 Le79228 SLAC™ Device codec 1 Test Function Measurements • Voltage • Current • Resistance • Capacitance • Tone • Noise Voice Signal Processor Test Functions* codec 2 codec 3 codec 4 CO IVD PBX KTS Internal Balanced Ring Le79252 SLIC Device Le79252 SLIC Device or External Unbalanced Ring “Ring” Signal Le79232 SLIC Device Le75282 LCAS (optional) Le79232 SLIC Device Le75282 LCAS (optional) SLAC™ devices are also available in 2-, 4-, and 8-channel versions. LE79112 VOICE CONTROL PROCESSOR Major Call Control Features Minor Call Control Features 32-Channel Call Control Loadable Image • Control/Coordination of Call Processing • Field firmware updates (compressed image support) Programmable on/off for each fault type Automatic switch to “Active” (Talk) on ring-trip/off-hook • CID high level interface • Control for Metering DTMF Detection • Minimizes the delay for ring-trip; no host interaction needed • Up to 16 lines simultaneously Automatic Ringing and Metering Cadencing Smooth polarity reversal control Checksum over Program Code space while in-service • Q.24 compliant Pulse Dial Timing with Decode • 32 simultaneous channels • Adjustable timing parameters for Make, Break, Flash, and Disconnect Zero-Cross Detection for ringing on/off control Optional make-before-break, or break-before-make (with LCAS) Adjustable delays for internal ringing AC and DC fault detection with automatic disconnect of the line Slow ramp from Disconnect to Standby • Programmable ramp time (0-4000ms) Read loop conditions while in service • Line Current (Metallic and Longitudinal) • Sensed Voltage • Current battery supply voltages Howler Tone generation The VCP Package Supported Line Circuit Configurations Host Code Document and source code for high-level algorithms. Host Algorithms API-II Software Host Controller Application Programming Interface (API) that presents a unified programming interface to all of Zarlink’s Voice Termination Devices (VTD). VP API-II QISLAC Le79232 SLIC Le79252 SLIC EMR*/LCAS 790 Series External Ringing 790 Series Internal Ringing * Optional VCP Firmware Control aggregation, DTMF Detection, Line Testing, Pulse dial timing, Zero cross detection, CID. QISLAC HBI Voice Control Processor VoiceportTM 2-CH ABS MPI 880 Series Line Configuration Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries is believed to be reliable. The products, their specifications, services and other information appearing in this publication are subject to change by Zarlink without notice. ZARLINK, ZL, and the Zarlink logo are trademarks of Zarlink Semiconductor Inc. © 2010, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number 10ZS210 www.ZARLINK.com