W6630CR
STEREO AUDIO DAC
GENERAL DESCRIPTION
The W6630CR is a stereo audio DAC chip incorporating
8X digital interpolatioin filters, 64X
multi-level
oversampling delta-sigma modulators, analog low-pass
filter and output amplifiers. The 16 or 18 Bit linear input
data for DAC consists of two formats, normal format
and I
2
S format. In addition, the device includes two
control modes. One is hardware mode which can control
mute and digital de-emphasis. The other one is software
mode, where 4x9 bits internal control registers can be
controlled by the serial setup port (SSP). Many functions
such as 256 step attenuation, DAC mute, digital de-
emphasis and format conversions can be set up through
these registers.
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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
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Load
High Performance Audio Output: 100 dB SNR, 96
dB Dynamic Range and -90 dB THD+N typically
Two Control Function Modes: Hardware Mode and
Software Mode Selected by Mode Pin
Software Mode controlled by 4x9 bits Registers via
Serial Setup Port (SSP)
Main Control Functions: De-emphasis, Mute, 256
Step Attenuation, Channel Output Combination,
Input Format Select such as 16 or 18 Bit, I
2
S or
Normal
20 pin SSOP Package
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FEATURES
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Power Supply: from +2.7 to +5.25 Volt, typically +5
Volt, for Analog and Digital Power
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Sampling Clock Rate: 32 K, 44.1 K, and 48 K Hz
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Master Clock Rate: 384 or 256 times of Sampling
Clock Rate
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Stereo 16 or 18 Bits Linear PCM Data Input
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Two Types Linear PCM Data Input Format: Normal
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APPLICATIONS
W6630CR is for digital audio applications, such as
Audio CD,Video CD, DVD, MP-3 player, STB,
Multimedia PC and other digital audio/video equipment.
Functional Block
Delta-Sigma DAC-Filter
VOL
VAGL
VOR
VAGR
LPF &
Output
Amplifier
LPF &
Output
Amplifier
64X
L_DAC
Pin Configuration
Data
Conversion
8X Digital
Oversampling
Interpolation
Multi-Bit
Filter
Delta-Sigma
Modulator
Serial
Setup
Port
(SSP)
&
Control
Registers
SSP_EN/MUTE
SSPCLK/DE1
SSPDIN/DE0
FSLR
H/W or
S/W Mode
Function
Control
Serial
Data
Port
(SDP)
BCLK
DINLR
XTALI
DGND
DVDD
FSLR
DINLR
BCLK
ZERO
VAGR
VOR
AGND
1
2
3
R_DAC
ZERO
Zero Detector
4
5
SSOP-20
6
15
14
7
13
8
12
9
10
(TOP VIEW)
11
20
19
18
17
16
XTALO
CLKO
SSP_EN/MUTE
SSPCLK/DE1
SSPDIN/DE0
/RESET
MODE
VAGL
VOL
AVDD
Power Supply
Management System
Sequence and
Control System
AGND AVDD DGND DVDD
/RESET XTALI XTALO CLKO
MODE
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
Apr. 1999
Details are subject to change without notice. All trademarks are property of their respective holders.
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1
