CS495313-CVZ Cirrus Logic Inc, CS495313-CVZ Datasheet - Page 5

• Manufacturer Part Number: CS495313-CVZ
• Description: IC, AUDIO DECODER DSP, LQFP-128
• Manufacturer: Cirrus Logic Inc

Specifications of CS495313-CVZ

• Audio Control Type: Decoder
• Control Interface: I2C, Parallel, SPI, UART
• Control / Process Application: DVD AV Player, Audio Decoder, Audio Post-Processor, Audio Encoder
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Code Overlays
DS705PP2
overlays. The overlays have been divided into three main groups called Decoders, Mid-processors, and Post-
processors. All software components are defined below:
processing host messages, calling audio-processing subroutines, error concealment, etc.
decoding/processing algorithms listed below require delivery of PCM or IEC61937-packed, compressed data
via I
processors. Generally speaking, these modules alter the number of valid channels in the audio I/O buffer
through processes like Virtualization (n 2 channels) or Matrix Decoding (2 n channels). Examples are Dolby
ProLogic IIx and DTS Neo:6.
Examples are Bass Management, Audio Manager, Tone Control, EQ, Delay, Customer-specific Effects, Dolby
Headphone/Virtual Speaker, etc.
requested. Each overlay can be reloaded independently without disturbing the other overlays. For example,
when a new decoder is selected, the OS, mid-, and post-processors do not need to be reloaded — only the
new decoder (the same is true for the other overlays).
User’s Manual for the latest listing of application codes and Cirrus Framework
The suite of software available for the CS4953xx family consists of an operating system (OS) and a library of
1. OS/Kernel - Encompasses all non-audio processing tasks, including loading data from external memory,
2. Decoders - Any Module that initially writes data into the audio I/O buffers, e.g. AC-3
3. Mid-processors - Any module that processes audio I/O buffer PCM data in-place before the Post-
4. Post-processors - Any module that processes audio I/O buffer PCM data in-place after the Mid-Processors.
The overlay structure reduces the time required to reconfigure the DSP when a processing change is
Table 2
2
S- or LJ-formatted digital audio to the CS4953xx.
below lists the firmware available based on device selection. Please refer AN288 CS4953xx Firmware
®Copyright 2008 Cirrus Logic, Inc.
™
32-bit Audio Decoder DSP Family
modules available.
®
, DTS, PCM, etc. All the
CS4953xx Data Sheet
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