Cirrus Logic CS49300, Reference Design, Page: 1 / 51

1
Copyright

Cirrus Logic, Inc. 2003
(All Rights Reserved)
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Preliminary Product Information
Features
Supports 4 digital S/PDIF
(IEC60958/IEC61937) inputs
8 Discrete analog inputs using the CS42528
+ 3 external CS5351 ADCs for 8 analog
channels of input at 48 kHz and 96 kHz
2 Channel upsampling supported
8 Discrete analog outputs from the CS42528
2 Digital S/PDIF (IEC60958/IEC61937)
outputs using the CS42528 Mux and
XMT958 transmitter on the CS49300
On board SRAM for AAC 5.1 discrete
channel decoding
In system programmable Flash, capable of
holding 16 DSP programs
Description
The CRD42528 is a reference design for the CS49300
DSP family and the CS42528 CODEC. It supports up to
8 channels of analog input at 48 and 96 kHz, or
2 channels of analog input at 192 kHz. One of four
digital S/PDIF inputs may be selected. Additionally, up
to 2 channels of digital S/PDIF output and 8 channels of
analog output at up to 192 kHz are supported. The on
board SRAM is included to allow for AAC 5.1 discrete
channel decoding, and on-board flash memory is
included to allow in-system programming of up to
16 DSP images. The DSP supports the following
algorithms, including (but not limited to) AAC, Dolby
Digital (AC-3), Dolby Digital EX, DTS, DTS-ES, DTS
Neo:6, Cirrus Original Surround (including COS 6.1),
SRS CircleSurround, SRS TruSurround, Pro Logic II,
MPEG Multichannel (including EX), and HDCD.
The control interface to the CRD42528 is the UDSP
System Platform. All control and data I/O is connected
to headers, which allows the CRD42528 to be used
easily in a end system or as a reference design. A larger
block diagram is shown on the next page.
ORDERING INFORMATION
CRD42528 Reference Design
CDI
AUDATA0
SAI
CX_SDIN1
AIN
RXP0
AOUT1
CS42528
IEC60958
8 x
ANALOG
4 x
SPDIF
CS493XX-IBA
(or CS492XX)
CS5351
DAI
Ext ADC
In
External
SRAM/Flash
EMAD
RXP1
RXP2
RXP3
AIN
SDOUT
CS5351
AIN
SDOUT
CS5351
AIN
SDOUT
CX_SDIN2
CX_SDIN3
CX_SDIN4
AUDATA1
AUDATA2
AUDATA3
L
R
Ls
Rs
C
Sub
SBL
SBR
L
R
Ls
Rs
C
Sub
SBL / Lt
SBR / Rt
AOUT2
AOUT3
AOUT4
AOUT5
AOUT6
AOUT7
AOUT8
CRD42528
Reference Design for the CS49300 and CS42528
MAY’ 03
DS586RD2