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Freescale Semiconductor Feature Phone Software Application Product Brief
* * * 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 ExpertTM (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
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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 termination 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 application's 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 telephony 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.
Feature Phone Application Software
Telephony Modules - Type 1 & 2 Telephony Features - Caller ID Parser - Echo Canceller - Full Duplex Speakerphone Line Sample Buffers Line Sample Audio Sample DAA Control Buffers Buffers SSI and CODEC Drivers GPIO Driver UART Buffer SCI Driver Keypad (for TDC1) Display (for TDC1)
Keypad Driver LCD Driver
Figure 1-1. Software System Block Diagram
(c) Freescale Semiconductor, Inc., 2005. All rights reserved.
Table 1-1. Performance
Application Caller ID Type 1-2 software module Caller ID Parser software module Generic Echo Canceller software module (with 8ms tail length) Full Duplex Speaker Phone software module (with 24ms tail length) Feature Phone application software Program (words) 2820 1440 850 Data (words) 257 550 800 MIPS 9.6 -- 12.0
1650
930
15.0
1760
1310
1.0
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.
PRODUCT DOCUMENTATION
DSP56800E Reference Manual Detailed peripheral description of the 56800E architecture, 16-bit core processor and Order Number: instruction set DSP56F800ERM Detailed description of the memory, peripherals, and interfaces of the DSP56852 Order number: DSP56852UM Order number: DSP5685XUM Order number: DSP5685XEVMUM
DSP56852 User's Manual
DSP5685x User's Manual
Detailed description of the memory, peripherals, and interfaces of the DSP5685x family of devices Describes in detail the hardware on the DSP56858EVM
DSP5685x Evaluation Module User's Manual Targeting Freescale DSP5685x Platform Feature Phone Application Programmer's Guide
Focuses on specifics of target configuration for Freescale's DSP56852 and DSP56858 devices Application documented in Targeting manuals Describes the development environment, software modules and tools for DSP568xx devices and the Application Programming Interfaces (APIs) GR-30-CORE, LSSGR: Voiceband Data Transmission Interface Section 6.6 (a module of LSSGR, FR-64), Telcordia Technologies, December, 1998. SR-3004, Testing Guidelines for Analog Type 1, 2, and 3 CPE as Described in www.telcordia.com SR-INS-002726 (a module of ADSI, FR-12), Telcordia Technologies, January, 1995. SR-TSV-002476, CPE Compatibility Considerations for the Voiceband Data Transmission Interface, Telcordia Technologies, December, 1999. Included with Code Warrior
GR-30-CORE
SR-3004
SR-TSV-002476
ORDERING INFORMATION
The Feature Phone Application is included in PE.
FreescaleTM 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, 1/2005 DSP5685XSFPPB

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