ZL38004 ZLS38500/1 ZLS38500 ZLS38501 ZL38004/ PP5941 - Datasheet Archive

 

FOR HANDS-FREE COMMUNICATION ZL38004 & ZLS38500/1 PRODUCT PREVIEW Zarlink's ZL38004 dedicated voice processor is a fully

 

DEDICATED VOICE PROCESSOR FOR HANDS-FREE COMMUNICATION ZL38004 ZL38004 & ZLS38500/1 ZLS38500/1 PRODUCT PREVIEW Zarlink's ZL38004 ZL38004 dedicated voice processor is a fully featured platform for hands-free communication systems, including car kits and speakerphones. The platform integrates Zarlink's voice processor, 16-bit dualchannel codec, on-board memory and multiple interfaces with Zarlink's firmware. The ZLS38500 ZLS38500 firmware pack for hands-free car kits and the ZLS38501 ZLS38501 firmware pack for speakerphones deliver measurable voice quality improvements. The echo tail cancellation capability is programmable up to 256 ms to cancel echo in a variety of environments, including mid- to large-size offices and vehicles. Unlike most competing devices, the ZL38004 ZL38004 voice processor platform provides high performance full-duplex operation. The platform incorporates an advanced algorithm that allows convergence in double-talk situations. Integrated Platform (ZL38004 ZL38004) for Hands-Free Communication Systems 100 MHz (200 MIPs) Zarlink voice processor Dual /ADCs with input buffer gain selection programmable to 8 KHz sampling Dual /DACs with output sampling of 8 KHz PCM port supports TDM (ST BUS, GCI or McBSP framing) or SSI modes Dual function inter-IC sound (I2S) or secondary TDM port Separate slave (micro controller) and master (flash) SPI ports 11 GPIO (general purpose input/ output) pins Integrated Firmware (ZLS38500/1 ZLS38500/1) Features ZL38004 ZL38004 Block Diagram ZL38004 ZL38004 Simplified Block Diagram To Speaker From Mic Clock Generator CODEC (0) Zarlink Voice Processor To Speaker From Mic PCM Audio to Telematics Processor or Bluetooth Supports AEC and LEC Master/Slave SPI System Clock Line Interface Timing Flash or External Device Control PCM Interface ST-BUS/GCI/ I2S/SSI Hardware Accelerators UART 11 GPIOs Clipping compensation Programmable sidetone Converges double-talk CODEC (1) Integrated Memory Programmable echo tail up to 256 ms Debug Port Control Buttons or Status LED Cancels echo with up to 10 dB echo return Advanced noise reduction (up to 30 dB) Customer Support The ZL38004 ZL38004 voice processor platform is supported by evaluation boards, reference designs, a full firmware package and Zarlink's Applications Hands-free car kits Conference phones and videoconference units Intercom and security systems Speakerphones network of in-house field application and design engineers. DEDICATED VOICE PROCESSOR ZL38004 ZL38004 & ZLS38500/1 ZLS38500/1 FOR HANDS-FREE COMMUNICATION APPLICATION Hands-Free Communication Systems Demand for higher quality hands-free communication is growing. Government legislation is requiring drivers to install hands-free car kits if they want to communicate inside a moving vehicle. Hands-free technology is also a key element in speakerphones and videoconference units, as well as voice-enabled security, door entry, elevator and restaurant drive-thru intercom systems. The ZL38004 ZL38004 voice processing platform is a highly integrated solution that helps manufacturers reduce cost and speed design time. The platform integrates a 16-bit dual-channel codec with Zarlink's voice processor and firmware. The platform's firmware delivers excellent performance in double-talk situations. While most solutions deliver only half-duplex operation, the ZLS38500/1 ZLS38500/1 firmware is able to continuously converge and track changes in the echo path to support fullduplex operation during double-talk situations. Illustrated below, the ZL38004 ZL38004 chip with ZLS38500/1 ZLS38500/1 firmware simplifies design and delivers measurable voice quality performance improvements in hands-free car kits and speakerphones. The sytem can cancel up to 256 ms echo tail, maintain a constant background noise and converge during double-talk situations. The algorithms can reduce noise of up to 30 dB. Hands-free communication systems must typically operate in locations such as cars and meeting rooms where echo and background noise degrade voice quality. Hands-free Car Kit Application Flash SPI Bluetooth Module 12V DC from car Speakers PCM ZL38004/ ZL38004/ ZLS38500 ZLS38500 Power Supply 1.2 V/3.3 V Analog Analog Amplifier Microphone SPI/UART Microprocessor Vol Up Vol Down Mute LEDs Figure 1 Hands-free Car Kit Application Speakerphone Application Flash SPI Line Interface DNIC or ISDN Interface PCM/ Analog Phantom Power from Line Power Supply 1.2V/3.3V Speakers ZL38004/ ZL38004/ ZLS38501 ZLS38501 Analog Analog Amplifier Microphone SPI/UART Microprocessor LCD ON/OFF Hook Keypad Figure 2 Speakerphone Application 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, ZLE and the Zarlink logo are trademarks of Zarlink Semiconductor Inc. AdvancedTCA is a trademark of PCI Industrial Computer Manufacturers Group. © 2006, Zarlink Semiconductor Inc. All Rights Reserved. Publication Number PP5941 PP5941 www.ZARLINK.com