AcuEdge Technology ZL38080
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ZL38080LDG1 (pdf) |
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AcuEdge Technology ZL38080 Hands-Free Automotive Audio Processor Product Brief • DSP with Voice Hardware Accelerators • Dual DACs with output sampling up to 48 kHz and internal output drivers • 4 single-ended or 2 differential Output Amps • kHz Stereo Music Playback with Voice • A single Digital Microphone input supporting up to 2 Microphones • Two TDM ports shared between PCM and Inter- IC Sound I2S • Each port provides sample rate conversion and synchronous and asynchronous TDM bus operation • SPI Slave port for host processor interface • Master SPI port for serial Flash interface • 14 General Purpose Input/Output GPIO pins • General purpose UART port • Boots from SPI, UART, or Flash allowing easy firmware updates • Can run unattended controllerless , self- booting into a configured operational state • Ultra-low and Standby off power • Full duplex operation supports AEC up to 256 ms in both Narrowband and Wideband operation 8 kHz or 16 kHz respectively • Psychoacoustic noise reduction • Single microphone • Stationary noise reduction • AGC/ALC • Dynamic Range Compression • Built-in support for G.712 and G.722 • Single and Dual Tone Generation • MiTuner GUI Software • Automated AEC tuning • Hands-Free Phone and Audio capability for Automotive applications Document ID# 149152 Version 2 May 2014 Ordering Information Device OPN 1 ZL38080LDF1 ZL38080LDG1 Package 64-pin QFN 9x9 64-pin QFN 9x9 Packing Tape & Reel Tray The Green package meets RoHS 2 Directive 2011/65/EU of the European Council to minimize the environmental impact of electrical equipment. The Microsemi AcuEdge Technology ZL38080 HandsFree Automotive Audio Processor is designed to provide leading edge acoustic echo cancellation and noise reduction for the Hands-Free Automotive market. The ZL38080 device is a highly adaptable hardware platform designed to support high performance audio processing applications. The ZL38080 provides a powerful DSP with voice specific hardware accelerators, one digital microphone interface, two independent 16-bit DACs, and two flexible TDM interfaces in a single 64-pin QFN package. The Microsemi AcuEdge Technology ZLS38080 license-free Firmware provides Acoustic Echo Cancellation AEC , noise reduction and a variety of other voice enhancements to improve both the intelligibility and subjective quality of voice in harsh acoustic environments. Performance • AEC Tail Length 256 ms • AEC sampling rate 8 and 16 kHz • Single Talk TCLw > 60 dB • Double Talk TCLw > 40 dB • Double Talk Attenuation < 3 dB • Noise reduction up to 30 dB 2014 Microsemi Corporation. All Rights Reserved. ZL38080 Voice Processing Series Solution Overview Designed for world-class high definition voice applications, Microsemi’s new ZL380 series of audio processors features the company’s Microsemi AcuEdge Technology. This innovative technology is a set of highly-complex and integrated algorithms that allows the user to extract more information from the audio environment. The new Microsemi AcuEdge Technology consists of license-free, royalty-free intelligent audio IP algorithms. When combined with Microsemi’s highly-integrated ZL380 series of audio processors, the solution accelerates customers’ time-to-market via validated reference design and easy-to-use development tools including the Microsemi Audio Interface Box AIB Kit which utilizes the MiTuner GUI software. Speaker 1 DAC1 Speaker 2 DAC2 Digital Mics Decimation Filter GPIO GPIO Integrated Memory Hardware Accelerators Host Bus Interface TDM PCM/I2S SPI Slave/I2C Slave PCMA/I2SA PCMB/I2SB Master SPI Flash Crystal UART UART ZL38080 Block Diagram The ZL38080 Hands-Free Automotive Audio Processor provides the following enhanced voice processing feature set. Microsemi ZL38080 Hardware • Host Interface SPI, UART, I2C • Standalone controllerless auto-boot from Flash • Two clock independent TDM ports PCM or I2S • 14 GPIOs, configurable with built-in control features • Crystal-less operation with a valid TDM clock • Digital microphone interface supporting one or two digital microphones 2014 Microsemi Corporation. All Rights Reserved. ZL38080 • Dual 16-bit digital-to-analog converters DACs • Headphone amps capable of four single-ended or two differential outputs • Two independent headphone drivers • 32 mW output drive power into 16 ohms • Impulse pop/click protection Microsemi AcuEdge Technology ZLS38080 Firmware • Wideband and Narrowband Acoustic Echo Cancellation • Initial convergence conditioning • Psychoacoustic noise reduction • Single microphone • Stationary noise reduction • Low active power consumption • Multi-tone generation • Signal mixing • kHz/48 kHz music mixed with 8 kHz/16 kHz voice • Howling detection/cancellation • Various encoding/decoding options • 16-bit 2’s complement linear • G.711 A/u law • G.722 • Send and receive path equalizers • 16-band for Narrowband mode • 22-band for Wideband mode • Comfort noise generation • kHz/48 kHz bypass mode • Configurable Cross-Point Switch AEC Auto-Tuning To optimize the acoustic properties of a given system design, the Audio Processor firmware requires gain and level tuning. The mechanical design, including the speaker and microphone quality and placement, will all affect the system’s acoustic performance. Microsemi has developed MiTuner GUI Software ZLS38508 and the Microsemi Audio Interface Box AIB hardware ZLE38470 to automatically optimize the firmware’s tunable parameters for a given hardware design, facilitating the system design process and eliminating the need for tedious manual tuning. The MiTuner GUI Software provides step-by-step instructions that allow the software’s algorithms to achieve a high level of acoustic performance for a given enclosure. |
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