W6631CS
STEREO AUDIO DAC
Winbond Corporate Headquarters
Tel : 886-3-5790666
Fax : 886-3-5796139
Taipei Sales Office
Tel : 886-2-7190505
Fax : 886-2-7197502
Winbond Electronics North America Corp.
Tel : 1-408-9436666
Fax : 1-408-9436668
Winbond Electronics H.K. Ltd.
Tel : 852-27513100
Fax : 852-27552064
Details are subject to change without notice. All trademarks are property of their respective holders. Apr. 1999
GENERAL DESCRIPTION
The Winbond W6631CS is a low cost stereo audio DAC
chip incorporating 8X digital interpolatioin filters, 64X
multi-level oversampling delta-sigma modulators,
analog low-pass filter and output amplifiers. The
operation voltage for this chip can be from 3.0 volt to
5.25 volt. Moreover, the 16 Bit linear input data for
DAC consists of two formats, normal format and I
2
S
format. In addition, the device provides DAC mute,
digital 44.1KHz de-emphasis and format conversions
can be set up by external pins.
FEATURES
Power Supply: from +3.0 to +5.25 Volt, typically +5
Volt
Sampling Clock Rate: 32 K, 44.1 K, and 48 K Hz
Master Clock Rate: 384 or 256 times of Sampling
Stereo 16 or 18 Bits Linear PCM Data Input
Two Types Linear PCM Data Input Format: Normal
and I
2
S Format
Delta-Sigma DAC built-in digital De-emphasis filter,
8X Interpolator, 64X Oversampling Multi-Bit
Modulator
Stereo DAC Output built-in Analog Low Pass Filter
and Ouput Amplifier with 5K
Load
Main Control Functions: 44.1khz De-emphasis,
Mute,
I
2
S or Normal Format
14 pin SOP Package
APPLICATIONS
W6631CS is for digital audio applications, such as
Audio CD, Video CD, MP-3 player, STB, Multimedia
PC and other digital audio/video equipment.
Clock rate
FUNCTIONAL BLOCK Pin Configuration
Delta-Sigma DAC-Filter
Serial
Data
Port
(SDP)
Sequence and
Control System
FSLR
DINLR
Data
Conversion
8X Digital
Interpolation
Filter
64X
Oversampling
Multi-Bit
Delta-Sigma
Modulator
L_DAC
R_DAC
LPF &
Output
Amplifier
LPF &
Output
Amplifier
BCLK
Power Supply
VOL
VAG
VOR
VDD
GND
MCLK MUTE FMT
DEEMP
NC
MCLK
NC
FSLR
BCLK
VAG
VOR
DINLR
GND
FMT
DEEMP
MUTE
VOL
VDD
SOP-14
1
2
3
4
5
6
7
14
13
12
11
10
9
8
(TOP VIEW)
NC
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