freescale semiconductor feature phone software application product brief ? freescale semiconductor, inc., 2005. all rights reserved. figure 1-1. software system block diagram feature phone application software telephony modules - type 1 & 2 telephony features - caller id parser - echo canceller - full duplex speakerphone line sample buffers audio sample buffers daa control uart buffer line sample buffers keypad (for tdc1) display (for tdc1) lcd driver keypad driver sci driver gpio driver ssi and codec drivers ? fully functional dsp-based telephone with speakerphone and class feature support ? high quality, full duplex speakerphone with performance optimization tools ? support for on-hook gr-30-core services: calling number and name delivery dialable directory number visual message waiting indicator call qualifier ? support for off-hook gr-30-core services: calling identity delivery on call waiting calling waiting deluxe ? adaptive line and acoustic echo cancellation ? multi-line and voip conference bridge ready ? telcordia sr-3004 and sr-tsv-002476 compliant ? supported by performance expert tm (pe) ? an adaptive line echo canceller with a preset tail length of 16ms that is adjustable in 8ms intervals up to 64ms ? an acoustic echo canceller with a preset tail length of 24ms that is adjustable in 8ms intervals up to 64ms ? eia-470 dtmf dialer ? extension-in-use detection control ? tonal ringing generator ? command/control interface via at commands or direct function calls the feature phone application is a fully functional telephone based on the dsp5685x family that provides a highly flexible framework for screenphone and telco service products. this flexibility permits device manufacturers to quickly add a custom user interface and value-added convenience features, such as number and call log directories, voice announce for caller id, and digital answering/paging functions. the feature phone application can be expanded to support multi-line applications with multi-line conferencing. feature phone compatibility with telephone networks is worldwide for call origination, call terminatio n and speakerphone operation. feature phone class features are compatible with gr-30-core compliant networks (north america). figure 1 illustrates the system diagram of the feature phone. the feature phone applications customizable framework uses four telephony dsp modules. the application software contains the main control loop and a real-time kernel that manages the telephone state and makes calls to dedicated pe modules to perform various functions. the application software performs all start-up initialization and buffer allocation for the telephon y modules and hardware drivers and implements communications between device and peripheral drivers and the telephony modules. the feature phone application communicates with the telephony modules through a well-defined api. all input commands and data samples are passed to the modules through one of three data structures contained within the function calls. these data structures are used by the modules to perform their function and pass telephony events such as caller id information back to the application software. a simple serial control interface using at commands is provided to simplify integration into existing products that contain a host controller.
freescale? and the freescale logo are trademarks of freescale semiconductor, inc. all other product or service names are the property of their respective owners. ? 2005 , freescale semiconductor, inc. rev. 1, 1/200 5 dsp5685xsfppb product documentation dsp56800e reference manual detailed peripheral description of the 56800e architecture, 16-bit core processor and instruction set order number: dsp56f800erm dsp56852 users manual detailed description of the memory, peripherals, and interfaces of the dsp56852 order number: dsp56852um dsp5685x users manual detailed description of the memory, peripherals, and interfaces of the dsp5685x family of devices order number: dsp5685xum dsp5685x evaluation module users manual describes in detail the hardware on the dsp56858evm order number: DSP5685XEVMUM targeting freescale dsp5685x platform focuses on specifics of target configuration for freescales dsp56852 and dsp56858 devices included with code warrior feature phone application application documented in targeting manuals programmers guide describes the development environment, software modules and tools for dsp568xx devices and the application programming interfaces (apis) gr-30-core gr-30-core, lssgr: voiceband data transmission interface section 6.6 (a module of lssgr, fr-64) , telcordia technologies, december, 1998. www.telcordia.com sr-3004 sr-3004, testing guidelines for analog type 1, 2, and 3 cpe as described in sr-ins-002726 (a module of adsi, fr-12) , telcordia technologies, january, 1995. sr-tsv-002476 sr-tsv-002476, cpe compatibility considerations for the voiceband data transmission interface , telcordia technologies, december, 1999. ordering information the feature phone application is included in pe. award-winning development environment ? processor expert (pe) provides a rapid application design (rad) tool that combines easy-to-use component-based software application creation with an expert knowledge system. ? the codewarrior integrated development environment is a sophisticated tool for code navigation, compiling, and debugging. a complete set of evaluation modules (evms) and development system cards will support concurrent engineering. ? the feature phone application is supported with the dsp56858evm and the telecommunications daughter card (tdc1). together, pe, codewarrior and evms create a complete, scalable tools solution for easy, fast, and efficient development. -c1yr p hooo&rupauwc2mr ciiyemclea2 &uaaucwodiauefx sclcodiauefx kl&n caller id type 1-2 software module 2820 257 9.6 caller id parser software module 1440 550 generic echo canceller software module (with 8ms tail length) 850 800 12.0 full duplex speaker phone software module (with 24ms tail length) 1650 930 15.0 feature phone application software 1760 1310 1.0
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