ZL38AMB
Ambarella Advanced IP Camera Audio Processor
Overview
Designed for world-class high definition voice applications, Microsemi’s new ZL380 series of audio processors feature 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 Timberwolf™ ZL38AMB is a hardware platform designed specifically for Ambarella video processors to support advanced features such as far field microphone, sound locator, beam forming, acoustic echo canceller and noise reduction with the ZLS38AMB firmware pack and ZLS38110 audio driver for IP camera application. |
Simplified Block Diagram

Typical Applications
- IP Camera HD Voice 2 way audio
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
- Two Digital Microphone inputs supporting up to 4 Microphones
- Two TDM ports shared between PCM and Inter-IC Sound (I2S)
- Provide sample rate conversion and synchronous TDM bus operation
- SPI Slave port for host processor interface
- Master SPI ports 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 power standby mode
Firmware Overview
Microsemi AcuEdge™ Technology ZLS38AMB - Firmware for IP Camera
- Far Field Microphone Processing
- Microphone Beamforming
- Sound Location Estimation
- Wideband and Narrowband Acoustic Echo Cancellation (for up to 3 microphones)
- Full duplex operation supports AEC (up to 256 ms) in Narrowband (8 kHz sampling) or Wideband (16 kHz sampling) operation
- 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
- Signal mixing
- 48 kHz stereo music record and playback with 16 kHz voice processing
- Howling detection/cancellation
- Prevents oscillation in AEC audio path
- Various encoding/decoding options:
- 16-bit 2’s complement (linear)
- G.711 A/μ law
- G.722
- Comfort noise generation
- 48 kHz bypass mode
Resources
Documentation
Software Manual
Application Notes
- ZLE38470 Automatic Tuning Kit
- Timberwolf WLCSP Package PCB Design Guidelines
- Mic, Speaker & Amplifier Design Guide
- Timberwolf Host I2C Communication Protocol
Product Previews
Downloads and Drivers
- IBIS Models:
- ZL38AMBLDG1 IBIS
Evaluation Boards
Software URLs
Parametric Search
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Ordering
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
Microchip Technology Inc. | .. | .. | .. | .. | Buy Now |
DigiKey | ZL38AMBLDF1-ND | 2700 | Tape & Reel | No Stock |
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
Microchip Technology Inc. | .. | .. | .. | .. | Buy Now |
DigiKey | ZL38AMBLDG1-ND | 1300 | Tray | No Stock |
Distributor | SKU | Stock | MOQ | Pkg | |
---|---|---|---|---|---|
DigiKey | ZL38AMBUGB2-ND | .. | Tape & Reel | No Stock |