Silicon Ocean Ultra Low Power WMA Decoder ASIC Core (WMA-SO2)

The WMA-SO2 decoder ASIC core is designed for low power WMA decoding applications.  The WMA-SO2 can be seamlessly integrated with Silicon Ocean MP3 decoder MP3-SO3E for a new generation of low power, low cost MP3/WMA decoding chips.

 

1.   Important Features

 

·     All WMA decoding functions implemented at RTL level

·     Gate count 75 K gates plus 22K bytes data RAM

·     Lowest power consumption (clock required 9 MHz)

·     Single clock synchronous design

·     Support WMA audio decoding

·     Straightforward interfaces for SoC applications

·     Ten-bands equalizer with 64 steps for -20 to 20 dB gain

·     Thirty-two steps volume control

·     Fully synthesizable technology independent of verilog RTL code

 

2. Function Overview

 

WMA-SO2 takes any WMA bitstream, automatically detects the header and extracts all header/side information, and then uses the information to decode compressed WMA bit stream. The output from the WMA-SO2 is 16 bits PCM samples. These PCM samples can be transferred to audio DAC via I2S bus or through a rate converter to a low cost fixed sample rate audio DAC.

 

3. WMA-SO2 top level interface

 

 

 

 

 

 

 

Deliverables

 

·      Synthesizable verilog source code

·      Verilog testbench

 

 

Please email info@SiliconOcean.com for more information