ZL38040
Advanced Audio Processor for Speakerphone
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.Microsemi AcuEdge™ Technology ZL38040 is a hardware platform designed to support advanced acoustic echo canceller and noise reduction with the ZLS38040 firmware pack for speakerphone and conference application.
Simplified Block Diagram
Typical Applications
- Full duplex speaker-phone for digital telephone
- Echo cancellation for video conferences
Features & Benefits
- DSP with voice specific Hardware Accelerators
- Dual ΔΣ DACs with output sampling up to 48 kHz and internal output drivers
- 4 Single-Ended or 2 Differential Output Amps
- 44.1/48 kHz Stereo Music Playback with Voice
- Two Digital Microphone inputs supporting up to 3 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 ports for serial Flash interface
- 14 General Purpose Input/Output (GPIO) pins
- Keypad Scanner (up to a 7x7 array)
- 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 power standby mode
- Full duplex operation supports AEC (up to 256 ms) in Narrowband (8 kHz sampling) or Wideband (16 kHz sampling) operation
Firmware Overview
Microsemi AcuEdge™ Technology ZLS38040 - Firmware for Advanced Hands-free Speakerphones
- Long tail acoustic echo cancellation length (up to 256 ms) in both Narrowband (8 kHz sampling) and Wideband (16 kHz sampling) operation
- G.168 Line Echo Canceller
- Non-linear echo cancellation provides higher tolerance for speaker distortions
- Advanced Noise Reduction reduces background noise from the near-end speech signal using Psycho-Acoustic techniques
- Telephone signal detection and generation
- Programmable tone generation (DTMF)
- DTMF receiver
- Caller ID Type 1&2 receiver
- Call progress tone detection
- 16/22 band equalizer
- Howling cancellation - prevents oscillation in echo canceller audio path
Resources
Documentation
Software Manuals
Application Notes
- ZLE38470 Automatic Tuning Kit
- Mic, Speaker & Amplifier Design Guide
- Timberwolf Host I2C Communication Protocol
Product Previews
Downloads and Drivers
- IBIS Models:
- ZL38040LDG1 IBIS
Evaluation Boards
Reference Designs
Software URLs
Parametric Search
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Parts | Part Status | package Type | Package Carrier | {{attribute.name | noComma}} ({{attribute.type}}) |
Ordering
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
DigiKey | ZL38040LDF1-ND | .. | Tape & Reel | No Stock |
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
DigiKey | ZL38040LDG1-ND | .. | Tray | No Stock | |
Mouser | 494-ZL38040LDG1 | 1,300 | 1 | Tray | Buy Now |