CS48DV2B-CQZR Cirrus Logic Inc, CS48DV2B-CQZR Datasheet - Page 6

• Manufacturer Part Number: CS48DV2B-CQZR
• Description: IC DSP AUDIO 32BIT 2CH 48-LQFP
• Manufacturer: Cirrus Logic Inc
• Type: Fixed Pointr

Specifications of CS48DV2B-CQZR

• Interface: I²C, SPI
• Clock Rate: 150MHz
• Voltage - I/o: 3.30V
• Voltage - Core: 1.80V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Non-volatile Memory: -
• On-chip Ram: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

CS48DV2B Data Sheet
32-bit Audio DSP for Dedicated Dolby Volume and Audistry by Dolby
3. Code Overlays
6
library of overlays. The overlays have been divided into three main groups called Matrix-processors,
Virtualizer-processors, and Post-processors. All software components are defined below:
configure the overlays and boot the DSP. This small image can either be stored in an external serial
FLASH/EEPROM, or downloaded via a host controller through the
requested. Each overlay can be reloaded independently without disturbing the other overlays. For
example,
need to be reloaded — only the new matrix-processor. This fact is also true for the other overlays.
Firmware User’s Manual for the latest listing of application codes and Cirrus Framework
available.
The suite of software available for the CS48DV2B DSP consists of an operating system (OS) and a
The bulk of each overlay is stored in ROM within the CS48DV2B, but a small image is required to
The overlay structure reduces the time required to reconfigure the DSP when a processing change is
Table 2
2. Matrix-processor- Any Module that performs a matrix decode on PCM data to produce more
3. Virtualizer-processor - Any module that encodes PCM data into fewer output channels than
4. Post-processors - Any module that processes audio I/O buffer PCM data in-place after the
1. OS/Kernel - Encompasses all non-audio processing tasks, including loading data from external
output channels than input channels (2 n channels). Examples are Dolby
DTS Neo:6
audio I/O buffer.
input channels (n 2 channels) with the effect of providing “phantom” speakers to represent the
physical audio channels that were eliminated. Examples are Dolby Headphone
Virtual Speaker
audio I/O buffer.
matrix- or virtualizer-processors. Examples are the Dolby Volume and Audistry by Dolby
firmware, bass management, audio manager, tone control, EQ, delay, and customer-specific
effects
memory, processing host messages, calling audio-processing subroutines, error concealment,
etc.
lists the firmware available based on device selection. Please refer to AN298, CS485xx
when a new matrix-processor is selected, the OS, virtualizer-, and post-processors do not
™
. Generally speaking, these modules increase the number of valid channels in the
®
. Generally speaking, these modules reduce the number of valid channels in the
Copyright 2009 Cirrus Logic
CONFIDENTIAL
SPI
™
/I
2
C
®
serial port.
®
Pro Logic
®
and Dolby
™
®
IIx and
modules
DS875F2
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