CS492305-CL

Manufacturer Part NumberCS492305-CL
DescriptionCirrus Logic [Multi-Channel Digital Audio Decoders]
ManufacturerCirrus Logic, Inc.
CS492305-CL datasheet
 
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
Page 1/56

Download datasheet (646Kb)Embed
Next
Multi-Channel Digital Audio Decoders
l
CS4923/4/5/6/7/8 features
— Optional Virtual 3D Output
— Simulated Surround and Programmable Effects
— Real Time Autodetection of Dolby Digital
®
DTS
, MPEG Multi-Channel and PCM
— Flexible 6-channel master or slave output
l
CS4923/4/5/6/7/8/9 features
— IEC60958/61937 transmitter for compressed-
data or linear-PCM output
— Dedicated 8 kilobyte input buffer
— DAC clock via analog phase-locked loop
— Dedicated byte wide or serial host interface
— Multiple compressed data input modes
— PES layer decode for A/V synchronization
— 96-kHz-capable PCM I/O, master or slave
— Optional external memory and auto-boot
— +3.3-V CMOS low-power, 44-pin package
l
CS4923/4/5/6 features
®
— Capable of Dolby Digital
Group A Performance
— Dolby bass manager and crossover filters
— Dolby Surround Pro Logic
l
CS4925/7: MPEG-2 Multi-Channel Decoder
l
CS4926/8: DTS Multi-Channel Decoder
l
CS4929: AAC 2-Channel (Low Complexity)
and MPEG-2 Stereo Decoder
RESET
CMPDAT,
SDATAN2
Compressed
Data Input
CMPCLK,
Interface
SCLKN2
CMPREQ,
LRCLKN2
SCLKN1,
Digital
STCCLK2
Audio
LRCLKN1
Input
Interface
SDATAN1
CLKIN
CLKSEL
Clock Manager
FILT2
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
Description
The CS4923/4/5/6/7/8 is a family of multi-channel digital
audio decoders, with the exception of the CS4929 as the
®
only stereo digital audio decoder. The CS4923/4/5/6 are
,
designed for Dolby Digital and MPEG-2 Stereo decoding. In
addition the CS4925 adds MPEG-2 multi-channel decoding
capability and the CS4926 provides DTS decoding. The
CS4927 is an MPEG-2 multi-channel decoder and the
CS4928 is a DTS multi-channel decoder. The CS4929 is an
AAC 2-channel and MPEG-2 stereo decoder. Each one of
the CS4923/4/5/6/7/8/9 provides a complete and flexible
solution for multi-channel (or stereo in the case of the
CS4929) audio decoding in home A/V receiver/amplifiers,
DVD movie players, out-board decoders, laser-disc players,
HDTV sets, head-end decoders, set-top boxes, and similar
products.
Cirrus Logic’s Crystal Audio Division provides a complete set
of audio decoder and auxiliary audio DSP application
programs for various applications. For all complementary
analog and digital audio I/O, Crystal Audio also provides a
complete set of high-quality audio peripherals including:
multimedia CODECs, stereo A/D and D/A converters and
IEC60958 interfaces. Of special note, the CS4226 is a
complementary CODEC providing a digital receiver, stereo
®
Decoding
A/D converters, and six 20-bit DACs in one package.
ORDERING INFORMATION
CS4923xx-CL 44-pin PLCC (xx = ROM revision)
CRD4923
CDB4923
RD,
WR,
SCDIO,
DATA7:0,
R/W,
DS,
SCDOUT,
EMAD7:0,
EMOE,
EMWR,
PSEL,
A0,
CS
GPIO7:0
GPIO11
GPIO10
GPIO9
SCCLK
SCDIN
Parallel or Serial Host Interface
Framer
24-Bit
Shifter
DSP Processing
Input
Buffer
RAM
RAM
Controller
Program
Data
Memory
Memory
RAM
Output
ROM
ROM
RAM Input
Program
Data
Buffer
Buffer
Memory
Memory
PLL
STC
FILT1
VA
AGND
DGND[3:1]
VD[3:1]
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
Cirrus Logic, Inc. 1999
(All Rights Reserved)
CS4923/4/5/6/7/8/9
Reference design with CS4226
Evaluation board
A1,
ABOOT,
EXTMEM,
INTREQ
GPIO8
DD
DC
MCLK
SCLK
Output
LRCLK
Formatter
AUDATA[2.0]
XMT958
AUG ‘99
DS262F2
1

CS492305-CL Summary of contents