Cirrus Logic CS4383-KQ, CS4383-BQ, CDB4383 Datasheet

CS4383

114 dB, 192 kHz 8-Channel D/A Converter

Features



24-Bit Conversion



Up to 192 kHz Sample Rates



114 dB Dynamic Range



-100 dB THD+N



Supports PCM and DSD Data Formats



Selectable Digital Filters



Volume Control with Soft Ramp

–1dBStepSize
– Zero Crossing Click-Free Transitions



Dedicated DSD inputs



Low Clock Jitter Sensitivity



µC or Stand-Alone Operation



3 Mute Control pins for Left, Right, and
Surrounds

I

DSD_SCLK(M 3)

SCL/CCLK(M1)

SDA/CDIN(M2) AD0/CS(M0)

Description

The C S4383 is a com plete 8-channel digital-to-analog
system including digital i nterpolation, fifth-order delta­sigma digital-to-analog conversion, digital de-em phas is,
volume control and analog filtering. The advantages of
this architecture include: ideal differential linearity, no
distortion mechanism s due to resistor matching errors,
no linearity drift over time and temperat ure and a high
tolerance to clock jitter.

The CS4383 accepts PCM data at sample rates from
4 k Hz to 192 kHz, DSD audio data, and operates over a
wide power supply range. These features are ideal for
multi-channel audio systems including D VD players,
SACD players, A/V receivers, digital T V’s and VCR’s,
mixing consoles, effects processors, set-top boxes, and
automotive audio systems.

ORDERING INFORM ATION

CS4383-KQ -10 to 70 °C 48-pin LQ FP
CS4383-BQ -40 to 85 °C 48-pin LQ FP
CDB4383 Evaluation Board

VLC

MUTEC1

MUTEC3MUTEC2

RST

VLS
SCLK
LRCK

SD IN1
SD IN2
SD IN3

SD IN4

MCLK

DSDxx

Serial Port

2

÷

8

Control Port(Stand-Alone M ode Select)

Volume Control

Mixer

Volum e Control

Volume Control

Mixer

Volum e Control

Volume Control

Mixer

Volum e Control ∆Σ

Volume Control

Mixer

Volum e Control

Preliminary Product Information

P.O. Box 17847, Austin, Texas 78760
[phone] FAX: [phone]
http://www.cirrus.com

External

Mute Control

VA

∆Σ

∆Σ

∆Σ

∆Σ

∆Σ

∆Σ

∆Σ

DAC

DAC

DAC

DAC

DAC

DAC

DAC

DAC

Analog Filter

Analog Filter

Analog Filter

Analog Filter

Inte rpolation Filte r A nalog Filte r

Interp olation Filte r

In te r p o la ti o n F ilte r A n a lo g F ilte r

Interpolation Filter

In te r p o la ti o n F ilte r A n a lo g F ilte r

Interpolation Filter

In te r p o la ti o n F ilte r A n a lo g F ilte r

Interpolation Filter

GNDVD

GND

This document contains information for a new product.
Cirrus Logic reserves the right to modify this product withoutnotice.

CopyrightCirrus Logic, Inc. 2002

(All Rights Reserved)

AOUTA1+
AOUTA1-

AOUTB1+
AOUTB1-

AOUTA2+
AOUTA2-

AOUTB2+
AOUTB2-

AOUTA3+
AOUTA3-

AOUTB3+
AOUTB3-

AOUTA4+
AOUTA4-

AOUTB4+
AOUTB4-

VQ

FILT+

MAR ‘02

DS548PP2

1

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ................................................................. 4

2. REGISTER QUICK REFERENCE ................................................................................... 14

3. REGISTER DESCRIPTION ............................................................................................. 15

4. PIN DESCRIPTION .......................................................................................................... 24

5. APPLICATIONS .............................................................................................................. 27

5.1 Grounding and Power Supply Decoupling ........................................................... 27

5.2 Oversampling Modes ........................................................................................... 27

5.3 Recommended Power-up Sequence ................................................................... 27

5.4 Analog Output and Filtering ................................................................................. 27

5.5 Interpolation Filter ................................................................................................ 27

5.6 Using DSD mode ................................................................................................. 28

6. CONTROL PORT INTERFACE ....................................................................................... 28

6.1 Enabling the Control Port ..................................................................................... 28

6.2 Format Selection .................................................................................................. 28

2

6.3 I

C Format ............................................................................................................ 28

6.3.1 Writing in I2C Format .......................................................................28

6.3.2 Reading in I

6.4 SPI Format ........................................................................................................... 29

6.4.1 Writing in SPI ..................................................................................29

6.5 Memory Address Pointer (MAP) ..................................................................... 30

7. PARAMETER DEFINITIONS ........................................................................................... 38

8. REFERENCES ................................................................................................................. 38

9. PACKAGE DIMENSIONS ............................................................................................... 39

2

C Format ....................................................................29

CS4383

LIST OF FIGURES

Figure 1 . Serial Mode Input Timing .................................................................................................8

Figure 2. Direct Stream Digital - Serial Audio Input Timing.............................................................9

Figure 3. Control Port Timing - I

Figure 4 . Contro l PortTiming - SPI Format...................................................................................11

Figure 5 . Typical Connection Diagram Control Port...................................................................... 12

Contacting Cirrus Logic Support

For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts

IMPORTANT NOTICE
"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. "Advance" product informa-

tion describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided "AS IS" without warranty of any
kind (express or implied). Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied
onis current and complete. All products aresoldsubject to the termsand conditions of salesupplied at thetimeof order acknowledgment,includingthosepertaining
to warranty, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of thisinformatio nas
the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document isthe property of Cirrus and by furnishing
this information, Cirrus grantsno license, express or impliedunderany patents, mask workrights, copyrights, trademarks, trade secretsor other intellectual property
rights. Cirrus owns the copyrights of the information containedhereinand gives consent for copies to be made of the information only for usewithin your organization
with respect to Cirrus integrated circuitsor other parts of Cirrus. This consent does not extend to other copying such as copying for general distribution, advertising
or promotional purposes, or for creating any work for resale.

An export permit needs to be obtained fromthe competent authorities of the Japanese Government if any of the products or technologies described in this material
and controlled under the"Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export license and/or quota needs to be obtained
from the competent authorities of the ChineseGovernment if any of the products or technologies described in this material is subject to thePRC Foreign Trade Law
and is to be exported or taken out of the PRC.

CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROP­ERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TOBE
SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH
APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK.

Purchase of I
those components in a standard I

Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. A ll otherbrand and product names inthis document may be trademarks
or service marks of their respective owners.

2

C components of Cirrus Logic, Inc., or one of its sublicensed Associated Companies conveys a license under the Phillips I2C Patent Rights to use

2

Csystem.

2

C Format ...................................................................................10

2

CS4383

Figure 6 . Typical Connection Diagram Stand-Alone..................................................................... 13

Figure 7. Control Port Timing, I

Figure 8 . Control Port Timing, SPI Format....................................................................................29

Figure 9 . Single Speed (fast) Stopband Rejection........................................................................ 31

Figure 1 0. Single Speed (fast) Transition Band ............................................................................ 31

Figure 1 1. Single Speed (fast) Transition Band (detail) ................................................................31

Figure 1 2. Single Speed (fast) Passband Ripple .......................................................................... 31

Figure 13. Single Speed (slow) Stopband Rejection..................................................................... 31

Figure 14. Single Speed (slow) Transition Band........................................................................... 31

Figure 1 5. Single Speed (slow) Transition Band (detail)............................................................... 32

Figure 16. Single Speed (slow) Passband Ripple......................................................................... 32

Figure 1 7. Double Spee d (fast) Stopband Rejection ..................................................................... 32

Figure 1 8. Double Spee d (fast) Transition Band........................................................................... 32

Figure 1 9. Double Spee d (fast) Transition Band (detail)............................................................... 32

Figure 2 0. Double Spee d (fast) Passband Ripple......................................................................... 32

Figure 2 1. Double Speed (slow) Stopband Rejection ................................................................... 33

Figure 2 2. Double Speed (slow) Transition Band .........................................................................33

Figure 2 3. Double Speed (slow) Transition Band (detail) .............................................................33

Figure 2 4. Double Speed (slow) Passband Ripple ....................................................................... 33

Figure 2 5. Quad Speed (fast) Stopband Rejection....................................................................... 33

Figure 2 6. Quad Speed (fast) Transition Band ............................................................................. 33

Figure 2 7. Quad Speed (fast) Transition Band (detail).................................................................34

Figure 2 8. Quad Speed (fast) Passband Ripple ...........................................................................34

Figure 2 9. Quad Speed (slow) Stopband Rejection...................................................................... 34

Figure 3 0. Quad Speed (slow) Transition Band............................................................................ 34

Figure 3 1. Quad Speed (slow) Transition Band (detail)................................................................34

Figure 3 2. Quad Speed (slow) Passband Ripple.......................................................................... 34

Figure 3 3. Format 0 - Left Justified up to 24-bit Data.................................................................... 35

Figure 34. Format1 - I

Figure 3 5. Format 2 - Right Justified 16-bit Da ta .......................................................................... 35

Figure 3 6. Format 3 - Right Justified 24-bit Da ta .......................................................................... 35

Figure 3 7. Format 4 - Right Justified 20-bit Da ta .......................................................................... 36

Figure 3 8. Format 5 - Right Justified 18-bit Da ta .......................................................................... 36

Figure 3 9. De-Emphasis Curve..................................................................................................... 36

Figure 4 0. Chann el Pair Routing Diagram (x = C hannel Pair 1, 2, 3, or 4)................................... 36

Figure 4 1. ATAPI Block Diagram (x = channel pair 1, 2, 3, or 4)..................................................37

Figure 4 2. Recommended Output Filter........................................................................................37

2

S up to 24-bit Data................................................................................... 35

2

C Format .................................................................................... 29

LIST OF TABLES

Table 1. Digital Interface Formats - PCM Mode............................................................................ 16

Table 2. Digital Interface Formats - DSD Mode............................................................................16

Table 3. ATAPI Decode ................................................................................................................ 21

Table 4. Example Digital Volume Settings ....................................................................................22

Table 5. Commo n Clock Frequenc ies........................................................................................... 26

Table 6. Digital Interface Format, Stand-Alone M ode Options...................................................... 26

Table 7. Mode Selection, Stand-Alone Mode O ptions..................................................................26

Table 8. Direct Stream Digital (DSD), Stand-Alone Mode Options............................................... 26

3

CS4383

1. CHARACTERISTICS AND SPECIFICATIONS

ANALOG CHARACTERISTICS (Full-Scale Output Sine Wave, 997 Hz; Measuremen t Bandwid th

10 Hz to 20 kHz, unless otherwise specified; Test load R
For Single speed Mode Fs = 48 kHz, SCLK = 3.072 MHz, MCLK = 12.288 MHz;

For Double Speed Mode Fs = 96 kHz, SCLK = 6. 144 MHz, MCLK = 12.288 MHz;
For Quad Speed Mode Fs = 192 kHz, SCLK = 12.288 MHz, MCLK = 24.576 MHz;
For Direct Stream Digital Mode Fs = 128 x 48 kHz, DSD_S CLK = 6.144 MHz, MCLK = 12.288 MHz).

Parameters Symbol Min Typ Max Unit

CS4383-KQ Dynamic Performance - All PCM mo des and DSD (Note 1)

Specified Temperature Range T
Dynamic Range (Note 2) 24-bit unweighted

A-Weighted

16-bit unweighted

(Note 3) A-Weighted

Total Harmonic Distortion + Noise (Note 2 )

24-bit 0 dB

-20 dB

-60 dB

16-bit 0 dB

(Note 3) -20 dB

-60 dB
Idle Channel Noise / Signal-to-noise ratio - 114 - dB
Interchannel Isolation (1 k Hz ) - 90 - dB

CS4383-BQ Dynamic Performance - All PCM mo des and DSD (Note 4)

Specified Temperature Range T
Dynamic Range (Note 2) 24-bit unweighted

A-Weighted

16-bit unweighted

(Note 3) A-Weighted

Total Harmonic Distortion + Noise (Note 2 )

24-bit 0 dB

-20 dB

-60 dB

16-bit 0 dB

(Note 3) -20 dB

-60 dB
Idle Channel Noise / Signal-to-noise ratio - 114 - dB
Interchannel Isolation (1 k Hz ) - 90 - dB

=3kΩ,CL= 100 pF, VA = 5 V, VD = 3.3V (see Figure 5)

L

A

THD+N

A

THD+N

-10 - 70 °C

105
108

-

-

-

-

-

-

-

-

-40 - 85 °C

102
105

-

-

-

-

-

-

-

-

111
114

94
97

-100

-91

-51

-94

-74

-34

111
114

94
97

-100

-91

-51

-94

-74

-34

-

-

-

-

-94

-

-

-

-

-

-

-

-

-

-91

-

-

-

-

-

dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

dB
dB
dB
dB

dB
dB
dB
dB
dB
dB

Notes: 1. CS4383-KQ parts are tested at 25 °C .

2. One-halfLSB of triangular PDF dither is added to data.

3. Performance limited by 16-bit quantizationnoise.

4. CS4383-BQ parts are tested at the extremes of the specified temperature range and Min/Max
performance numbers are guaranteed across the s pecified temperature range, T
takenat25°C.

4

. Typical numbers are

A

CS4383

ANALOG CHARACTERISTICS (Continued)

Parameters Symbol Min Typ Max Units

Analog Output - All PCM mo des an d DSD

FullScaleDifferential Output Voltage (Note 5) V
Quiescent Voltage V
Max Currentfrom V

Q

FS

I

QMAX

Q

Interchannel Gain Mismatch - 0.1 - dB
Gain Drift - 100 - ppm/°C
Output Impedance (Note 5) Z
AC-Load Resistance R
Load C apacitance C

OUT

L
L

POWER AND THERMAL CHARACTERISTICS

Parameters Symbol Min Typ Max Units

Power Supplies

Power Supply Current normal operation, V
(Note 6) V

Interface current, VLC=5V (Note 7, 8)

power-down state (all supplies) (Note 9)

Power Dissipation (Note 6)
VA = 5 V, VD = 3.3 V normal operation

power-down (Not e 9)

VA = 5 V, VD = 5 V normal operation

power-down (Not e 9)

Package Thermal Resistance θ

Power Supply Rejection Ratio (Note 10) (1 k Hz )

A
D

V

=3.3V

D

VLS=5V

(60 Hz)

=5V
=5V

88% V

A

92% V

A

94% V

A

Vpp

-50%VA-VDC

-1 -µA

- 100 - Ω

3- -kΩ

- - 100 pF

I

A

I

D

I

D

I

LC

I

LS

I

pd

JA

θ

JC

PSRR -

-

-

-

-

-

-

-

-

-

-

-

-

60
45
30

2

84

200

400

1

525

1

48
15

60

-

40

66
70
46

-

-

-

485

-

680

-

-

-

-

-

mA
mA
mA

µA
µA
µA

mW
mW
mW
mW

°C/Watt
°C/Watt

dB
dB

Notes: 5. VFSis tested under load RLand includes attenuation due to Z

6. Current consumption increases with increasing FS within a given speed mode andis s ignal dependant.
Max values are based on highest FS and highest MCLK.

7. I

measured wi th no external loading on the SDA pin.

LC

8. This specification is violated when the VLC supply is greater than VD and when pin 16 (M1 /SDA ) i s tied
or pulled low. Logic tied to pin 16 needs to be able to sink this current.

9. Power down mode is defined as RST

pin = L ow w ith all clock and data lines held static.

10. Valid with the recommended capacitor values on FILT+ and VQ as shown in Fi gures 5 and 6.

OUT

5

CS4383

ANALOG FILTER RESPONSE

Fast Roll-Off Slow Roll-Off (Note 11)

Parameter

Combined Digital and On-chip Analog Filter Response - Single Speed Mode (Note 12)

Passband (Note 13) to -0.01 dB corner

to -3 dB corner00
Frequency Response 10 Hz to 20 k Hz -0.01 - +0.01 -0.01 - +0.01 dB
StopBand .547 - - .583 - - Fs
StopBand Attenuation (Note 14) 90 - - 64 - - dB
Group Delay - 12/Fs - - 6.5/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.41/Fs - ±0.14/Fs s
De-emphasis Error (Note 1 5) Fs = 32 kHz
(Relative to 1kHz) Fs = 44.1 kHz

Fs = 48 kHz

Combined Digital an d On -chip Analog Filter Response - Double Speed Mode - 96kHz (Note 12)

Passband (Note 13) to -0.01 dB corner

to -3 dB corner00
Frequency Response 10 Hz to 20 kHz -0.01 - 0.01 -0.01 - 0.01 dB
StopBand .583 - - .792 - - Fs
StopBand Attenuation (Note 14) 80 - - 70 - - dB
Group Delay - 4.6/Fs - - 3 .9/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.03/Fs - ±0.01/Fs s

Combined Digital and On-chip Analog Filter Respons e - Quad Speed Mode - 192kHz (Note 12)

Passband (Note 13) to -0.01 dB corner

to -3 dB corner00
Frequency Response 10 Hz to 20 kHz -0.01 - 0.01 -0.01 - 0.01 dB
StopBand .635 - - .868 - - Fs
StopBand Attenuation (Note 14) 90 - - 75 - - dB
Group Delay - 4.7/Fs - - 4 .2/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - - ±0.01/Fs - ±0.01/Fs s

Combined Digital and On-chip Analog Filter Response - DSD Mode (Note 12)

Passband (Note 13) to -0.1 dB c orner

to -3 dB corner
Frequency Response 10 Hz to 20 kHz - - - -.01 - 0.1 dB

Notes: 11. Slow Roll-Offinterpolationfilter is only availablein control port mode.

12. Filter response is not tested but is guaranteed by design.

13. Response is clock dependent and will scale with Fs. Note that the response plots(Figures 9 t o 32) have
been normalized to Fs and can be de-normalized by multiplying the X-axis scale by Fs.

14. Single and Double Speed Mode Measurement Bandwidth is from stopband to 3 Fs.
Quad Speed Mode Measurement Bandwidth is from stopband to 1.34 Fs.

15. De-emphasis is available only in Single Speed Mode; Only 44.1kHz De-emphasis is av ailable in Stand­Alone Mode

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

.454
.499

±0.23
±0.14
±0.09

.430
.499

.105
.490

-

-

0
0

-

-

-

0
0

0
0

0
0

-

-

-

-

-

-

-

-

-

-

-

0.417

0.499

±0.23
±0.14
±0.09

.296
.499

.104
.481

20

120

UnitMin Typ Max Min Typ Max

kHz
kHz

Fs
Fs

dB
dB
dB

Fs
Fs

Fs
Fs

6

CS4383

DIGITAL CHAR ACTERISTICS (For KQ T

=-10to+70°C;ForBQTA=-40to+85°C;VLC=VLS=

A

1.8 V to 5.5 V)

Parameters Symbol Min Typ Max Units

High-Level Input Voltage Serial Data Port

Control P ort

Low-Level Input Voltage Serial Data Port

Control P ort

Input Leakage Current (Note 8) I

V
V

V
V

IH
IH

IL
IL

in

70% VLS
70% VLC

-

-

-

-

-

20% VLS

-

20% VLCVV

-

-

--±10µA

V
V

Input Capacitance - 8 - pF
Maximum MUTEC Sink Current - 3 - mA
MUTEC High-Level Output Voltage V
MUTEC Low-Level Output Voltage V

OH

OL

-VA-V

-0-V

ABSOLUTE MAXIMUM RATINGS (GND = 0V; all voltages wi th respect to ground.)

Parameters Symbol Min Max Units

DC Power Supply Analog power

Digital internal power

Serial data port interface power

Control port interface power
Input Current, Any Pin Except Supplies I
Digital InputVoltage Serial data port interface

Control port interface
Ambient Operating Temperature (power applied) T
Storage Temperature T

WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation is

not gu aranteed at these extremes.

VD
VLS
VLC

V

IND-S

V

IND-C

VA

stg

-0.3

-0.3

-0.3

-0.3

in

-±10mA

-0.3

-0.3

A

-55 125 °C

6.0

6.0

6.0

6.0

VLS+ 0.4
VLC+ 0.4

V
V
V
V

V
V

-65 150 °C

RECOMMENDED OPERATING CONDITIONS (GND = 0V; all voltages with respect to ground.)

Parameters Symbol Min Typ Max Units

DC Power Supply Analog powe r

Digital internal power

Serial data port interface power

Control port interface power

VA

VD
VLS
VLC

4.5

3.0

1.8

1.8

5.0

3.3

5.0

5.0

5.5

5.5

5.5

5.5

V
V
V
V

7

CS4383

SWITCHING CHARACTERISTI CS (For KQ T

1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLS, C

=-10to+70°C;ForBQTA=-40to+85°C;VLS=

A

= 30pF)

L

Parameters Symbol Min Typ Max Units

MCLK Frequency (Note 16)

Single Speed Mode 1.024 - 51.2 MHz

Double Speed Mode 6.400 - 51.2 MHz

Quad Speed Mode 6.400 - 51.2 MHz
MCLK Duty Cycle 40 50 60 %
Input S ample Rate Single Speed Mode

Double Speed Mode

Quad Speed Mode

Fs
Fs
Fs

4

50

100

-

-

-

50
100
200

kHz
kHz

kHz
LRCK Duty Cycle 45 50 55 %
SCLK Pulse Wi dth Low t
SCLK Pulse Width High t
SCLK Period t

(Note 17) t

SCLK rising to LRCK edge delay t
SCLK rising to LRCK edge setup t im e t
SDATA valid to SCLK rising setup time t
SCLK rising to SDATA hold time t

sclkl

sclkh

sclkw

sclkw

slrd

slrs

sdlrs

sdh

20 - - ns
20 - - ns

2

------------------

MCLK

4

------------------

MCLK

--ns

--ns

20 - - ns
20 - - ns
20 - - ns
20 - - ns

Notes: 16. See Table 5 on page 26 for suggested MCLK frequencies

17. This serial clock is available only in Control Port Mode when the MCLK Divide bit is enabled.

.

LRCK

t

t

slrd

SCLK

t

sdlrs

SDATA

Figure 1. Serial Mode Input Timing

slrs

t

sclkl

t

sdh

t

sclkh

8

CS4383

DSD - SWITCHING CHARACTERISTICS (

Logic 0 = GND; VLS = 1.8 V to 5.5 V; Logic 1 = VLS Volts; C

Parameter Symbol Min Typ Max Unit

Master Clock Frequency (Note 18) 4.096 - 38.4 MHz
MCLK Duty Cycle (All DSD modes) 40 50 60 %
DSD_SCLK Pulse Width Low t
DSD_SCLK Pulse W idth High t
DSD_SCLK Frequency (64x Oversam pled)

(128x Oversampled)
DSD_L / _R valid to DSD_SCLK rising setup time t
DSD_SCLK rising to DSD_L or DSD_R hold time t

Note: 18. Min is 4 times 64 x DSD or 2 times 128x DSD, and Max is 12 times 64x DSD or 6 times 128x DSD. The

proper MCLK to DSD_SCLK ratio must be set either by the DIF registers or the M0:2 pins

For KQ TA=-10to+70°C; For BQ TA=-40to+85°C;

=30pF)

L

sclkl

sclkh

sdlrs

sdh

20 --ns
20 --ns

1.024

2.048
20 --ns
20 --ns

t

sclkh

t

sclkl

-

-

3.2

6.4

MHz
MHz

DSD_SCLK

DSD_L, DSD_R

Figure 2. Direct Stre am Digital - Serial Audio Input Timing

sdlrstsdh

t

9

CS4383

SWITCHING CHARACTERISTICS - CONTROL PORT - I2CFORMAT (For KQ T

=-10to+70°C; For BQ TA=-40to+85°C; VLC = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLC,
C

=30pF)

L

Parameter Symbol Min Max Unit

SCL Clock Frequency f

Rising Edge to Start t

RST
Bus F ree Time Between Transmissions t
Start Condition Hold Time (prior to first clock pulse) t
Clock Low time t
Clock High Time t
Setup Time for Repeated Start Condition t
SDA Hold Time from SCL Falling (Note 17) t
SDA Setup time to SCL Rising t
Rise Time of SCL and SDA t
Fall TimeSCL and SDA t
Setup Time for Stop Condition t
Acknowledge Delay from SCL Falling (Note 18) t

scl

irs

buf

hdst

low
high
sust

hdd
sud

rc,trc

fc,tfc

susp

ack

- 100 kHz

500 - ns

4.7 - µs

4.0 - µs

4.7 - µs

4.0 - µs

4.7 - µs
0-µs

250 - ns

-1µs

- 300 ns

4.7 - µs

-(Note21)ns

A

Notes: 19. Dat a must be held for sufficient time to bridge the transition time, t

20. The acknowledge delay is based on MCLK and can limit the maximum transaction speed.

15

21. forSingle-Speed Mode, forDouble-Speed Mode, for Quad-SpeedMode.

RST

SDA

SCL

--------------------­256 Fs×

t

irs

Stop S t a rt

t

buf

t

hdst

t

low

t

hdd

t

high

15

-------------------- ­128 Fs×

t

sud

t

ack

Repeated

t

Figure 3. Control Port Timing - I2CFormat

,ofSCL.

fc

----------------- ­64 Fs×

Start

t

sust

15

t

hdst

Stop

rd

t

rc

t

fd

t

fc

t

susp

10

CS4383

SWITCHING CHARACTERISTI CS - CONTROL PORT - SPI FORMAT

(For KQ TA=-10to+70°C; For BQ TA=-40to+85°C; VLC = 1.8 V to 5.5 V; Inputs: Logic 0 = GND, Logic 1 = VLC,
C

=30pF)

L

Parameter Symbol Min Max Unit

CCLK Clock Fr equency f

RST

Rising Edge to CS Falling t

CCLK Edge to CS

High Time Between Transmissions t

CS

Falling to CCLK Edge t

CS

Falling (Note 20) t

CCLK Low Time t

sclk

srs

spi
csh
css

scl

-MHz

MCLK

----------------- ­2

500 - ns
500 - ns

1.0 - µs
20 - ns

1

----------------- ­MCLK

-ns

CCLK High Time t

CDIN to CCLK Rising Setup Time t
CCLK Rising to DATA Hold Time (Note 21) t
Rise Time of CCLK and CDIN (Note 22) t
Fall Time of CCLK and CDIN (Note 22) t

Notes: 22. t

only needed before first falling edge of CS after RST rising edge. t

spi

23. Data must be held for sufficient time to bridge t he transition time of CCLK.

24. For F

SCK

<1MHz.

RST

t

srs

CS

t

t

spi

css

t

scl

t

sch

CCLK

sch

dsu

dh

r2
f2

1

----------------- ­MCLK

-ns

40 - ns
15 - ns

- 100 ns

- 100 ns

= 0 at all other times.

spi

t

csh

CDIN

t

r2

t

f2

t

dsu

t

dh

Figure 4. Control Port Timing - SPI Format

11

CS4383

+3.3Vto+5V

+1.8Vto+5V

PCM

Digital

Audio

Source

DSD

Audio

Source

1µF

0.1 µF

9
8

11
12
13

43

48

47
46
45

44
42

+

0.1 µF

6
7

3
2
1

VD

MCLK
LRCK

SCLK
SDIN1
SDIN2
SDIN3
SDIN4

VLS

DSDA1
DSDB1
DSDA2

DSDB2

DSDA3
DSDB3

DSDA4

DSDB4
DSD_SCLK

4

CS4383

32

VA

AOUTA1+

AOUTA1-

MUTEC1

AOUTB1+

AOUTB1-

MUTEC2

AOUTA2+

AOUTA2-

AOUTB2+

AOUTB2-

AOUTA3+

AOUTA3-

AOUTB3+

AOUTB3-

AOUTA4+

AOUTA4-

AOUTB4+

AOUTB4-

MUTEC3

0.1 µ F

39
40

41

38
37

22

35
36

34
33

29
30

28
27

25
26

24
23

19

+

1µF

Analog Conditioning

and Muting

Analog Co nditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

+5 V

+1.8Vto+5V

12

Micro-

C o n t ro ller

Ω

2K

Note*

Note: Necessary for I2C
control port operation

18

RST

14

SCL/CC LK

15

SDA/CDIN

16

ADO/CS

Ω

2K

20

FILT+

0.1 µF

17

VLC

GND

5

GND

31

VQ

21

0.1 µ

Figure 5. Typical Connection Diagram Control Port

+

F

F

1µF

+

0.1 µ

47 µF

CS4383

+3.3Vto+5V

Note

VLS

+1.8Vto+5V

DSD

PCM
Digital
Audio

Source

DSD

Audio

Source

47 K

1µF

Ω

0.1 µ F

6
7

9

8
11
12

13

43

48

47

46
45

44

+

0.1 µF

3
2
1

MCLK
LRCK
SCLK
SDIN1
SDIN2
SDIN3
SDIN4

VLS

DSDA1
DSDB1
DSDA2

DSDB2
DSDA3

DSDB3
DSDA4

DSDB4

4

VD

CS4383

32

VA

AOUTA1+

AOUTA1-

MUTEC1

AOUTB1+

AOUTB1-

MUTEC2

AOUTA2+

AOUTA2-

AOUTB2+

AOUTB2-

AOUTA3+

AOUTA3-

AOUTB3+

AOUTB3-

AOUTA4+

AOUTA4-

AOUTB4+

AOUTB4-

0.1 µF

39

40

41

38
37

22

35

36

34

33

29

30

28

27

25

26

24

23

+

1µF

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

Analog Conditioning

and Muting

+5 V

Stand-Alone

Mode

Configuration

+1.8Vto+5V

VLC

Note

: If series resistors are
used they must be <1k Ohm . If
possible tie VLC to the VD supply
to reduce pos sible excess current
consum ption from V LC.

47 K

Note

Note

Ω

VLC

DSD

0.1 µ F

42

M3(DSD_SCLK

14

M2

15

M1

16

M0

18

RST

17

VLC

GND

5

MUTEC3

GND

31

FILT+

VQ

19

20

21

Figure 6. Typical Connection Diagram Stand-Alone

+

47 µF

F

F

0.1 µ

Note

1) LR CK must be tied to VLS and
remain sta tic high .

2) M 3 PC M s tand-alone configuration
pin becom es DSD _SCLK

1µF

+

DSD

: F or D SD operation:

0.1 µ

13

CS4383

2. REGISTER QUICK REFERENCE

Addr Function 7 6 5 4 3 2 1 0

01h Mode Control 1 CPEN FREEZE

default

02h Mode Control 2 Reserved DIF2 DIF1 DIF0 Reserved Reserved Reserved Reserved

default

03h Mode Control 3 SZC1 SZC0 SNGLVOL RMP_UP MUTEC+/- AMUTE Reserved Reserved

default

04h Filter Control Reserved Reserved Reserved FILT_SEL Reserved DEM1 DEM0 RMP_DN

default

05h Invert Control INV_B4 I NV_A4 INV_B3 INV_A3 INV_B2 INV_A2 INV_B1 INV_A1

default

06h Mixing Control

Pair 1 (AOUTx1)

default

07h Vol. Control A1 A1_MUTE A1_VOL6 A1_VOL5 A1_VOL4 A1_VOL3 A1_VOL2 A1_VOL1 A1_VOL0

default

08h Vol. Control B1 B1_MUTE B1_VOL6 B1_VOL5 B1_VOL4 B1_VOL3 B1_VOL2 B1_VOL1 B1_VOL0

default

09h Mixing Control

Pair 2 (AOUTx2)

default

0Ah Vol.Control A2 A2_MUTE A2_VOL6 A2_VOL5 A2_VOL4 A2_VOL3 A2_VOL2 A2_VOL1 A2_VOL0

default

0Bh Vol.Control B2 B2_MUTE B2_VOL6 B2_VOL5 B2_VOL4 B2_VOL3 B2_VOL2 B2_VOL1 B2_VOL0

default

0Ch Mixing Control

Pair 3 (AOUTx3)

default

0Dh Vol. Control A3 A3_MUTE A3_VOL6 A3_VOL5 A3_VOL4 A3_VOL3 A3_VOL2 A3_VOL1 A3_VOL0

default

0Eh Vol.Control B3 B3_MUTE B3_VOL6 B3_VOL5 B3_VOL4 B3_VOL3 B3_VOL2 B3_VOL1 B3_VOL0

default

0Fh Mixing Control

Pair 4 (AOUTx4)

default

10h Vol. Control A4 A4_MUTE A4_VOL6 A4_VOL5 A4_VOL4 A4_VOL3 A4_VOL2 A4_VOL1 A4_VOL0

default

11h Vol. Control B4 B4_MUTE B4_VOL6 B4_VOL5 B4_VOL4 B4_VOL3 B4_VOL2 B4_VOL1 B4_VOL0

default

12h Chip Revision PART3 PART2 PART1 PART0 Reserved Reserved Reserved Reserved

default

00

00000000

10000100

00000000

00000000

P1_A=B P1ATAPI4 P1ATAPI3 P1ATAPI2 P1ATAPI1 P1ATAPI0 P1FM1 P1FM0

00100100

00000000

00000000

P2_A=B P2ATAPI4 P2ATAPI3 P2ATAPI2 P2ATAPI1 P2ATAPI0 P2FM1 P2FM0

00100100

00000000

00000000

P3_A=B P3ATAPI4 P3ATAPI3 P3ATAPI2 P3ATAPI1 P3ATAPI0 P3FM1 P3FM0

00100100

00000000

00000000

P4_A=B P4ATAPI4 P4ATAPI3 P4ATAPI2 P4ATAPI1 P4ATAPI0 P4FM1 P4FM0

00100100

00000000

00000000

1010----

MCLKDIV

0

DAC4_DIS DAC3_DIS DAC2_DIS DAC1_DIS PDN

00001

14

CS4383

3. REGISTER DESCRIPTION

Note: All registers are read/write in I2C mode and write only in S PI, unless otherwise noted.

3.1 Mode Control 1 (address 01h)

76543210

CPEN FREEZE MCLKDIV DAC4_DIS DAC3_DIS DAC2_DIS DAC1_DIS PDN

00

0

3.1.1 CONTROL PORT ENABLE (CPEN)

Default = 0

0 - Disabled
1-Enabled

00001

Function

:

This bit defaults to 0, allowing the device to power-up in Stand-Alone mo de. The Control port mode
can be accessed by setting this bit to 1. This will allow the operation of the device to be controlle d by
the registers and the pin definitions will conform to Control Port Mode. To accomplish a clean power­up, the user should write this bit within 10 ms following the release of Reset.

3.1.2 FREEZE CONTROLS (FREEZE)

Default = 0

0 - Disabled
1-Enabled

Function:

This func tion allows modifications to be made to the registers w ithout the changes taking effect until
the FREEZE is di sa bled. To make multiple changes in the Control port registers take effect simulta­neously, enable the FREEZE Bit, make all register changes , then Disable the FREEZE bit.

3.1.3 MASTER CLOCK DIV IDE ENABLE (MCLKDIV)

Default = 0

0 - Disabled
1-Enabled

Function:

The M CLKDIV bit enables a circuit which divides the externally applied MCLK signal by 2 prior t o all
other internal circuitry.

3.1.4 DAC PAIR DISABLE ( DACX_DIS)

Default = 0

0-Enabled
1 - Disabled

Function:

When enabled the res pectiveDAC channel pair x (AOUTAx and AOUTBx) will remain in a reset state.
It is advised that changes to these bits be made while the power down bit is enabled to eliminate the
possibility of audible artifacts.

15

CS4383

3.1.5 POWER DOWN (PDN)

Default = 1

0 - Disabled
1-Enabled

Function:

The entire device will enter a low-power state w hen t his function is enabled, and the contents of the
control registers are retained in this mode. The p ower-down bit defaults to ‘enabled’ on power-up and
must be disabled before normal operation in Control Port mode can occur.

3.2 Mode Control 2 (address 02h)

76543210

Reserved DIF2 DIF1 DIF0 Reserved Reserved Reserved Reserved

00000000

3.2.1 DIGITAL INTERFACE FORMAT (DIF)

Default = 000 - Format 0 (Left Justified, up to 24-bit data)

Function:

These bits s elect the interface format for the serial audio input. The Functional Mode bits determine
whether PCM or DS D mode is selected.

PCM Mode: The required relationship b etwe en the Left/Rightclock, serial clock and serialdata is defined
by the Di gital Interface Format and the options are detailed in Figures 33-38.

DIF2 DIF1 DIF0 DESCRIPTION Format F IGURE

000
001
010
011
100
101
110
111

Left Justified, up to 24-bit data
I2S, up to 24-bit data
Right J us tified, 16-bit data
Right J us tified, 24-bit data
Right J us tified, 20-bit data
Right J us tified, 18-bit data
Reserved
Reserved

033
134
235
336
437
538

Table1.DigitalInterfaceFormats-PCMMode

DSD Mode: The relationship between the oversampling ratio of the DSD audio data and the required
Master clock to DS D data rate is defined by the Digital I nterface Format pins.

DIF2 DIF1 DIFO DESCRIPTION

0 0 0 64x oversampled DSD data with a 4x MCLK to DSD data rate
0 0 1 64x oversampled DSD data with a 6x MCLK to DSD data rate
0 1 0 64x oversampled DSD data with a 8x MCLK to DSD data rate
0 1 1 64x oversampled DSD data with a 12x M CLK to DSD data rate
1 0 0 128x oversam pled DSD data with a 2x MCLK to DSD data rate
1 0 1 128x oversam pled DSD data with a 3x MCLK to DSD data rate
1 1 0 128x oversam pled DSD data with a 4x MCLK to DSD data rate
1 1 1 128x oversam pled DSD data with a 6x MCLK to DSD data rate

Table 2. Digital Interface Formats - DSD Mode

16

CS4383

3.3 Mode Control 3 (address 03h)

76543210

SZC1 SZC0 SNGLVOL RMP_UP MUTEC+/- AMUTE Reserved Reserved

10000100

3.3.1 SOFT RAMP AND ZERO CROSS CONTROL (SZC)

Default = 10

00 - Immediate Change
01 - Zero Cross
10 - Soft Ramp
11 - So ft Ramp on Zero Crossings

Function:

Immediate Change

When Immediate Change is selected all level changes will take effect immediately in one step.

Zero Cross

Zero Cross Enable dictates that signal level changes, either by attenuation changes or muting, will
occur on a sig nal zero crossing to minimize audible artifacts. The requested level change will occur
after a timeout period between 512 and 1024 sampl e periods (10.7 ms to 21.3 ms at 48 kHz sample
rate) if the signal does not encounter a zero crossing. The zero cross function is independently mon­itored and im plemented for each channe l.

Soft Ramp

Soft Ramp allows level changes, both muting and attenuation, to be implemented by incrementally
ramping, in 1/8 dB steps, from the c urrent level to the new level at a rate of 1 dB per 8 left/right clock
periods.

Soft Ramp on Zero Crossing

Soft Ramp and Zero Cross Enable dictates that signal level changes, either by attenuation changes
or muting, will occur in 1/8 dB steps and be implemented on a signal zero crossing. The 1/8 dB level
change will occur after a time out period between 512 and 1024 sample periods (10.7 m s to 21.3 ms
at 48 kHz sample rate) if the signal does not enco unter a zero crossing. The zero cross function is
independently monitored and implemented for each channel.

17

3.3.2 SINGLE VOLUME C ONTROL (SNGLVOL)

Default = 0

0 - Disabled
1-Enabled

Function:

The individual channel volum e levelsare independently cont rolled by their respective Volume Control
Bytes when this func tion is disabled. The volume on all channels is determined by the A 1 Channel
Volume Control Byte, and the other Volume Control Bytes are ignored when this function is enabled.

3.3.3 SOFT VOLUME RAMP -UP A FTER ERROR (RMP_UP)

Default = 0

0 - Disabled
1-Enabled

Function:

An un-mute will be performed after executing a filter mode change, after a LRCK/MCLK ratio change
or error, and after changing the Functional Mode. When this feature is enabled, this un-mute is ef ­fected, similar to attenuation changes, by the Soft an d Ze ro Cros s bits in the ModeControl 3 register.
When disabled, an immediate un-mute is performed in these instances.

CS4383

Note: For best results, it is recommended that this feature be used in conjunction with the RMP_DN
bit.

3.3.4 MUTEC POLARITY (MUTEC +/-)

Default = 0

0-ActiveLow
1-ActiveHigh

Function:

The active polarity of the MUTEC pin(s) is determined b y this register. When set to 0 (default) the
MUTEC pins are low when active . When set to 1 the M UTE C pin(s) are high when active.

Note: When the on board mute circuitry is designed for active high, the MUTEC outputs will be low
(un-muted) for the period of time during reset and before this bit is enabled to 1.

3.3.5 AUTO-MUTE (AMUTE)

Default = 1

0 - Disabled
1-Enabled

Function:

The Digital-to-Analog converter output will mute following the reception of 8192 consecutive audio
samples of s tatic 0 or -1. A s ingle sample of non-static data will release the mute. Detection and
muting is done independently for each channel. The quiescent voltage on the output will be retained
and the Mute Control pin will go active during t he mutepe riod. Themuting funct ion is af fected,similar
to volume control changes, by the Soft and Zero Cross bits in t he Mod e Control 3 register.

18

CS4383

3.4 Filter Control (address 04h)

76543210

Reserved Reserved Reserved FILT_SEL Reserved DEM1 DEM0 RMP_DN

00000000

3.4.1 INTERPOLATION FILTER SELECT (FILT_SEL)

Default = 0

0-Fastroll-off
1 - Slow roll-off

Function

:

This Function allows t he user to select whether the interpolation filter has a fast or slow roll off. For
filter characteristics pleas e see Section 1.

3.4.2 DE-EMPHASIS CONTROL (DEM)

Default = 00

00 - Disabled
01 - 44.1 kHz
10 - 48 kHz
11 - 32 kHz

Function:

Selects the appropriate digital filter to maintain the standa rd 15 µs/50 µs digital de-emphasis filter re­sponse at 32, 44.1 or 48 kHz sam ple rates. (see Figure 39)

De-emphasis is only available in Single Speed Mode.

3.4.3 SOFT RAMP-DOWN BE FORE FILTER MODE CHANGE (RMP_DN)

Default = 0

0 - Disabled
1-Enabled

Function:

A mute will be performed prior to executing a filter mode change. When this feature is enabled, this
mute is effected, simi lar to attenuation changes, by the Soft and Z ero Cross bits in the Mode Control
3 register. When disabl ed, an immediate mute is performed prior to exec uting a filter mode change.

Note: F or bes t results, it is recommended that this feature be used in conjunction with the RMP_UP
bit.

19

CS4383

3.5 Invert control (address 05h)

76543210

INV_B4 INV_A4 INV_B3 INV_A3 INV_B2 I NV_A2 INV_B1 INV_A1

00000000

3.5.1 INVERT SIGNAL POLARITY (INV_XX)

Default = 0

0 - Disabled
1-Enabled

Function:

When enabled, these bits will in vert the signal polarity of their respective channels.

3.6 Mixing Control Pair 1 (Channels A1 & B1)(address 06h)
Mixing Control Pair 2 (Channels A2 & B2)(address 09h)
Mixing Control Pair 3 (Channels A3 & B3)(address 0Ch)
Mixing Control Pair 4 (Channels A4 & B4)(address 0Fh)

76543210

Px_A=B PxATAPI4 PxATAPI3 PxATAPI2 PxATAPI1 PxATAPI0 PxFM1 PxFM0

00100100

3.6.1 CHANNEL A V OLUME = CHANNEL B VOLUME (A=B)

Default = 0

0 - Disabled
1-Enabled

Function:

The AOUTAx and AOUTBx volume levels are independently controlled by the A and the B Channel
Volume Control Bytes when this func tion i s disabled. The volume on both AOUTAx and AOUTBx are
determined by the A Channel Attenuation and Volume Control Bytes (per A-B pair), and the B Chan­nel Bytes are ignored when this function is enabled.

3.6.2 ATAPI CHANNEL MIXING AND MUTING (ATAPI)

Default = 01001 - AOUTA x =aL, AO UTB x =bR (Stereo)

Function:

The CS4383 implements the channel mixing functions of t he A TAPI CD-ROM specification. The ATAPI
functions are applied per A-B pair. Refer to Table 3 and Figure 41 for additional information

20

.

ATAPI4 ATAPI3 ATAPI2 ATAPI1 ATAPI0 AOUTAx AOUTBx

00000 MUTE MUTE
00001 MUTE bR
00010 MUTE bL
00011 MUTE b[(L+R)/2]
00100 aR MUTE
00101 aR bR
00110 aR bL
00111 aR b[(L+R)/2]
01000 aL MUTE
01001 aL bR
01010 aL bL
01011 aL b[(L+R)/2]
01100 a[(L+R)/2] MUTE
01101 a[(L+R)/2] bR
01110 a[(L+R)/2] bL
0 1 1 1 1 a[(L+R)/2] b[(L+R)/2]
10000 MUTE MUTE
10001 MUTE bR
10010 MUTE bL
1 0 0 1 1 MUTE [(aL+bR)/2]
10100 aR MUTE
10101 aR bR
10110 aR bL
1 0 1 1 1 aR [(bL+aR)/2]
11000 aL MUTE
11001 aL bR
11010 aL bL
1 1 0 1 1 aL [(aL+bR)/2]
1 1 1 0 0 [(aL+bR)/2] MUTE
1 1 1 0 1 [(aL+bR)/2] bR
1 1 1 1 0 [(bL+aR)/2] bL
1 1 1 1 1 [(aL+bR)/2] [(aL+bR)/2]

Tabl e 3. ATAPI Decode

CS4383

3.6.3 FUNCTIONAL MODE (FM)

Default = 00

00 - Single-Speed Mode (4 to 50 kHz sample rates)
01 - Double-Speed Mode (50 to 100 kHz sample rates)
10 - Quad-Speed Mode (100 to 200 kHz sample rates)
11 - Direct Stream Digital Mode

Function:

Selects the required r ange of input sam ple rates or DSD Mode. When DSD mode is selected for any
channel pair then all pairs will switch to DSD mode.

21

CS4383

3.7 Volume control (addresses 07h, 08h, 0Ah, 0Bh, 0Dh, 0Eh, 10h, 11h)

76543210

xx_MUTE xx_VOL6 xx_VOL5 xx_VOL4 xx_VOL3 xx_VOL2 xx_VOL1 xx_VOL0

00000000

3.7.1 MUTE (MUTE)

Default = 0

0 - Disabled
1-Enabled

Function:

The Digital-to-Analog converter output will mute when enabled. The quiescent voltage on the output
will be retained. The muting function is effected, simi lar to attenuation changes, by the Soft and Zero
Cross bits. The MUTEC pins will go active during the m ute period according to the MUTEC register.

3.7.2 VOLUME CONTROL (XX_VOL)

Default = 0 (No attenuation)

Function:

The Digital Volume Control registers allow independent control of the signal levels in 1 dB increments
from 0 to -127 dB. Volume settings are decoded as shown in Table 4. The volume changes are imple­mented as dictated by the Soft and Zero Cross bits. All volume settings less than -127 dB are equivalent
to enabling the MUTE bit.

Binary Code Decimal Value Volume Setting

0000000 0 0 dB
0010100 20 -20 dB
0101000 40 -40 dB

0111100 60 -60 dB
1011010 90 -90 dB

Tabl e 4. Examp le Digital Volume Settings

22

CS4383

3.8 Chip Revision (address 12h)

76543210

PART3 PART2 PART1 PART0 Reserved Reserved Reserved Reserved

1011- - - -

3.8.1 PART NUMBER ID (PART) [READ ONLY]

1011 - CS4383

Function:

This read-only register c an be used to identify the model number of the device.

23

4. PIN DESCRIPTION

LRCK (DSD_EN)

DSDA2

DSDB1

DSDA1

VD

GND

MCLK

SDIN1
SCLK

TST

SDIN2

SDIN3

AOUTA1 -

MUTEC1

VLS

M3(DSD_SCLK)

DSDB4

DSDB3

DSDA4

DSDB2

DSDA3

48 47 46 45 44 43 42 41 40 39 38 37

1
2
3
4
5
6
7
8
9
10
11
12

13 14 15 16 17 18 19 20 21 22 23 24

CS4383

CS4383

AOUTB1 -

AOUTA1 +

AOUTB1+

36

AOUTA2-

35

AOUTA 2+
AOUTB 2+

34

AOUTB2-

33
32

VA

31

GND

AOUTA 3-

30

AOUTA3+

29

AOUTB 3+

28
27

AOUTB3­AOUTA4-

26

AOUTA4+

25

RST

SDIN4

VLC

M0(AD0/CS )

M1(SDA/CDIN)

M2(SCL/CCLK)

VQ

FILT+

MUTEC2

MUTEC3

AOUTB4-

AOUTB4 +

Pin Name # Pin Description

VD 4

GND 531Ground (Input) - Ground reference. Should be connected to analog ground.

MCLK 6 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. Table 5 illustrates

LRCK 7 LeftRight Clock (Input) - Determines which channel, Left or Right, is currently active on the s erial audio

SDIN1
SDIN2
SDIN3
SDIN4

SCLK 9 Serial Clock (Input) - Serial clock for the serial audio interface.

VLC 17 Control Port Power (Input) - Determines the required signal level for the control port. Refer to the Rec-

RST

FILT+ 20 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.

VQ 21

Digital Power (Input) - Positive power supply for the digital section. Refer to the Recommended Operat-

ing Conditions for appropriate voltages.

several standardaudio sample rates and the required master clock frequency.

data line. The frequency of the left/right clock must be at the audio sample rate, Fs.
Serial Audio Data Input (Input)- Input for two’s complement serial audio data.

8
11
12
13

ommended Operating Conditions for appropriate voltages.

18 Reset (Input) - The device enters a low power mode and all internal registers are reset to their default

settings when low.

Requires the capacitivedecoupling to analog ground, as shown in the Typical Connection Di agram.
Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively

coupled to analog gr ound, as shown i n the Typical Connection Diagram. The nominal voltage level is
specified in the Analog Characteristics and Specifications section. VQ presents an appreciable source
impedance and any current drawn from this pin will alter device performance.However,VQ can be
used to bias the analog circuitry assuming there is no AC signal component and the DC current is less
than the maximum specified in the Analog Characteristics and Specificati ons section.

24

CS4383

Pin Name # Pin Description

MUTEC1
MUTEC2
MUTEC3

AOUTA1 +,­AOUTB1 +,­AOUTA2 +,­AOUTB2 +,­AOUTA3 +,­AOUTB3 +,­AOUTA4 +,­AOUTB4 +,-

VA 32

VLS 43 Ser ial Audio Interface Power (Input) - Determines the required signal level for the serial audio inter-

Control Port Definitions

SCL/CCLK 14 Serial Control Port Clock (I nput) - Serial clock for the serial control port. Requires an external pull-up

SDA/CDIN 15 Serial Control Data (Input/Output) - SDA is a data I/O line in I

AD0/CS 16 Address Bit 0 (I2C) / Control Port Chip Select (SPI) (Input)-AD0isachipaddresspininI

Stand-Alone Definitions

M0
M1
M2
M3

DSD Definitions

DSD_SCLK 42 DSD SerialClock (Input) - Serial clock for t he Direct Stream Digital audio interface.
DSD_EN 7 DSD-Enable (Input) - When held at logic ‘1’ the device will enter DSD mode (Stand-Alone mode only).
DSDA1

DSDB1
DSDA2
DSDB2
DSDA3
DSDB3
DSDA4
DSDB4

TST 10 Test - This pin needs to be tied to analog ground.

41

Mute Control (Output) - The Mute Control pins go low during power-up initialization, reset, muting,

22

power-down or if the master clock to left/right clock frequency ratio is incorrect.These pins are intended

19

to be used as a control for external mute circuits to preventthe c licks and pops that can occur in any sin­gle supply system. The use of external mute ci rcuits are not mandatory but may be desired for designs
requiring the absolute minimum in extraneous clicks and pops.

39, 40

Differential Analog Output (Output) - The full scale differential analog output level is specified in the

38, 37

Analog Char acteristics specificationtable.
35, 36
34, 33
29, 30
28, 27
25, 26
24, 23

Analog Power (Input) - Positive power supply for the analog section. Refer t o the Recommended Oper-

ating Conditions for appropriate voltages.

face. Refer to the Recommended OperatingConditions for appropriate voltages.

resistor to the logic interface voltage in I

resistor to t he logic interface voltage, as shown in the Typical Connection Diagram. CDIN is the input

data line for the control port interface in SPI mode.

CS is the chip s elect signal for SPI format.

16

Mode Selection (Input) - Determines the operational mode of the device as detailed in Tables 6 and 7.

15
14
42

3

Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data.

2

1
48
47
46
45
44

2

C mode as shown in the TypicalConnection Diagram.

2

C mode and requires an external pull-up

2

C mode;

25

CS4383

Mode

(sample-rate range)

MCLK Ratio 256x 384x 512x 768x 1024x*

Single Speed

(4 to 50 kHz)

MCLK Ratio 128x 192x 256x 384x 512x*

Double Speed

(50 to 100 kHz)

MCLK Ratio 64x 96x 128x 192x 256x*

Quad Speed

(100 to 200 kHz)

*Note: These modes are only available in control port mode by setting the MCLKDIV bit = 1.

M1

(DIF1)

00
01

10
11

M0

(DIF0)

Sample

Rate

(kHz)

32 8. 1920 12.2880 16.3 840 24.5760 32.7680

44.1 11.2896 16.9344 22.5792 33.8688 45.1584
48 12.2880 18.4320 24.5760 36.8640 49.1520

64 8. 1920 12.2880 16.3 840 24.5760 32.7680

88.2 11.2896 16.9344 22.5792 33.8688 45.1584
96 12.2880 18.4320 24.5760 36.8640 49.1520

176.4 11.2896 16.9344 22.5792 33.8688 45.1584
192 12.2880 18.4320 24.5 760 36.8640 49.1520

Table 5. Common Clock F requencies

DESCRIPTION FORMAT FIGURE

Left Jus ti fied, up to 24-bit data

2

S, up to 24-bit data

I
Right J us tified, 16-bit Data
Right J us tified, 24-bit Data

Table 6. Digital Interface Format, Stand-Alone Mode Op tions

MCLK (MHz)

033
134

235
336

Control port

only modes

M3 M2

(DEM)

00
01
10
11

DSD_Mode

(LRCK1)

1000
1001
1010
1011
1100
1101
1110
1111

M2 M1 M0 DESCRIPTION

Single-Speed without De-Emphasis (4 to 50 kHz s ample rates)
Single-Speed with 44.1kHz De-Emphasis; see Figure 39
Double-Speed (50 to 100 kHz s ample rates)
Quad-Speed (100 to 200 kHz sample rates)

Tabl e 7. Mode Selection, Stand-Alone Mode Options

Table 8. Direct Stream Digital (DSD), Stand-Alone Mode Options

DESCRIPTION

64x ov ers ampled DSD data with a 4x MCLK to DSD data rate
64x ov ers ampled DSD data with a 6x MCLK to DSD data rate
64x ov ers ampled DSD data with a 8x MCLK to DSD data rate
64x ov ers ampled DSD data with a 12x MCLK to DSD data rate
128x oversampled DSD data with a 2x MCLK to DSD data rate
128x oversampled DSD data with a 3x MCLK to DSD data rate
128x oversampled DSD data with a 4x MCLK to DSD data rate
128x oversampled DSD data with a 6x MCLK to DSD data rate

26

CS4383

5. APPLICATIONS

5.1 Grounding and Power Supply Decoupling

As with any high resolution converter, the CS4383
requires careful attention to power supply and
grounding arrangements to optimize performance.
Figures 5 & 6 show the recommended power ar­rangement with VA, VD, VLS and VLC connected
to clean supplies. Decoupling capacitors should be
located as close to the device package as possible.
If desired, all supply pins may be connected to the
same supply, but a decoupling capacitor shouldstill
be placed on each supply pin (see Section 1 for rec­ommended voltages).

5.2 Oversampling Modes

The CS4383 operates in one of three oversampling
modes based on the input sample rate. Mode selec­tion is determined by the M3 and M2 pins in Stand­Alone mode or the FM bits in Control Port mode.
Single-Speed mode supports input sample rates up
to 50 kHz and uses a 128x oversampling ratio.
Double-Speed mode supports input sample rates up
to 100 kHz and uses an oversampling ratio of 64x.
Quad-Speed mode supports input sample rates up
to 200 kHz and uses an oversampling ratio of 32x.

5.3 Recommended Power-up Sequence

1. Hold RST low until the power supply, master,

and left/right clocks are stable. In this state, the
control port is reset to its default settings and VQ
will remain low.

2. Bring RST high. The device will remain in a low

power state with VQ low and will initiate the
Stand-Alone power-up sequence. The control port
will be accessible at this time. If Control Port oper­ation is desired, write the CPEN bit prior to the
completion of the Stand-Alone power-up se­quence, approximately 512 LRCK cycles in Sin-

gle-Speed Mode (1024 LRCK cycles in Double­Speed Mode, and 2048 LRCK cycles in Quad­Speed Mode). Writing this bit will halt the Stand­Alone power-up sequence and initialize the control
port to its default settings. The desired register set­tings can be loaded while keeping the PDN bit set
to 1.

3. If Control Port Mode is selected via the CPEN
bit, set the PDN bit to 0 which will initiate the pow­er-up sequence.

5.4 Analog Output and Filtering

The application note “Design Notes for a 2-Pole
Filter with Differential Input” discusses the sec­ond-order Butterworth filter and differential to sin­gle-ended converter which was implemented on the
CS4383 evaluation board, CDB4383, as seen in
Figure 42. The CS4383 does not include phase or
amplitude compensation for an external filter.
Therefore, the DAC system phase and amplitude
response will be dependent on the external analog
circuitry.

5.5 Interpolation Filter

To accommodate the increasingly complex re­quirements of digital audio systems, the CS4383
incorporates selectable interpolation filters for each
mode of operation. A “fast” and a “slow” roll-off
filter is available in each of Single, Double, and
Quad Speed modes. These filters have been de­signed to accommodate a variety of musical tastes
and styles. The FILT_SEL bit is used to select
which filter is used (see the control port section for
more details).

When in stand-alone mode, only the “fast” roll-off
filter is available.

Filter specifications can be found in Section 1, and
filter response plots can be found in Figures 9 to 32.

27

CS4383

5.6 Using DSD mode

In stand-alone mode, DSD operation is selected by
holding DSD_EN(LRCK) high and applying the
DSD data and clocks to the appropriate pins. The
M2:0 pins set the expected DSD rate and MCLK
ratio.

In control-port mode the FM bits set the device into
DSD mode (DSD_EN pin is not required to be held
high). The DIF register then controls the expected
DSD rate and MCLK ratio.

During DSD operation, the PCM related pins
should either be tied low or remain active with
clocks (except LRCK in Stand-Alone mode).
When the DSD related pins are not being used they
should either be tied static low, or remain active
with clocks (except M3 in Stand-Alone mode).

6. CONTROL PORT INTERFACE

The control port is used to load all the internal set­tings. The operation of the control port may be
completely asynchronous with the audio sample
rate. However, to avoid potential interference prob­lems, the control port pins should remain static if
no operation is required.

The CS4383 has MAP auto increment capability,
enabled by the INCR bit in the MAP register,
which is the MSB. If INCR is 0, then the MAP will
stay constant for successive writes. If INCR is set
to 1, then MAP will auto increment after each byte
is written from register 01h to 08h and then from
09h and 11h, allowing block reads or writes of suc­cessive registers in two separate sections (the
counter will not auto-increment to register 09h
from register 08h).

control port is enabled, these pins are dedicated to
control port functionality.

To prevent audible artifacts the CPEN bit (see Sec­tion 3.1.1) should be set prior to the completion of
the Stand-Alone power-up sequence, approximate­ly 1024 LRCK cycles. Writing this bit will halt the
Stand-Alone power-up s equence and initialize the
control port to its default settings. Note, the CP_EN
bit can be set any time after RST
ever, setting this bit after the Stand-Alone power­up sequence has completed can cause audible arti­facts.

goes high; how-

6.2 Format Selection

The control port has 2 formats: SPI and I2C, with
the CS4383 operating as a slave device.

2

C operation is desired, AD0/CS should be tied

If I
to VLC or GND. If the CS4383 ever detects a high
to low transition on AD0/CS
ter the control port is activated , SPI format will be
selected.

after power-up and af-

6.3 I2C Format

In I2C Format, SDA is a bidirectional data line.
Data is clocked into and out of the part by the clock,
SCL, with a clock to data relationship as shown in
Figure 7. The receiving device should send an ac­knowledge (ACK) after each byte received. There
is no CS
dress and should be tied to VLC or GND as re­quired. The upper 6 bits of the 7 bit address field
must be 001100.

Note: MCLK is required during all I
tions. Please see reference 4 for further details.

pin. Pin AD0 forms the partial chip ad-

2

C transac-

6.1 Enabling the Control Port

On the CS4383 the control port pins are shared
with stand-alone configuration pins. To enable the
control port, the user must set the CPEN bit. This

2

is done by performing a I

28

C or SPI write. Once the

6.3.1 Writing in I2C Format

To communicate with the CS4383, initiate a
START condition of the bus. Next, send the chip
address. The eighth bit of the address byte is the

bit (low for a write). The next byte is the

R/W
Memory Address Pointer, MAP, which selects the
register to be read or written. The MAP is then fol-

CS4383

lowed by the data to be written. To write multiple
registers, continue providing a clock and data,
waiting for the CS4383 to acknowledge between
each byte. To end the transaction, send a STOP
condition.

6.3.2 Reading in I2C Format

To communicate with the CS4383, initiate a
START condition of the bus. Next, send the chip
address. The eighth bit of the address byte is the

bit (high for a read). The contents of the reg-

R/W
ister pointed to by the MAP will be output after the
chip address. To read multiple registers, continue
providing a clock and issue an ACK after each
byte. To end the transaction, send a STOP condi­tion.

6.4 SPI Format

In SPI format, CS is the CS4383 chip select signal,
CCLK is the control port bit clock, CDIN is the in­put data line from the microcontroller and the chip

address is 0011000. CS

, CCLK and CDIN are all
inputs and data is clocked in on the rising edge of
CCLK.

Note that the CS4383 is write-only when in SPI
format.

6.4.1 Writing in SPI

Figure 8 shows the operation of the control port in
SPI format. To write to a register, bring CS
The first 7 bits on CDIN form the chip address and
must be 0011000. The eighth bit is a read/write in­dicator (R/W

), which must be low to write. The
next 8 bits form the Memory Address Pointer
(MAP), which is set to the address of the register
that is to be updated. The next 8 bits are the data
which will be placed into register designated by the
MAP. To write multiple registers, keep CS
continue providing clocks on CCLK. End the read
transaction by setting CS

high.

low.

low and

Note 1

SDA

SCL

Start

Note: If o peration is a write, this byte co nta in s the M em ory A ddress P ointer, M A P.

CS

CCLK

CDIN

001100

ADDR
AD0

Figure 7. Control Port T iming, I2CFormat

CHIP

ADDRESS

0011000

MAP = Memory Address Pointer

Figure 8. Control Port Timing, SPI Format

R/W

ACK

R/W

DATA
1-8

MAP

ACK

MSB

byte 1

DATA
1-8

DATA

ACK

LSB

byte n

Stop

29

6.5 Memory Address Pointer (MAP)

76543210

INCR Reserved Reserved MAP4 MAP3 MAP2 MAP1 MAP0

00000000

6.5.1 INCR (AUTO MAP INCREME NT E NABLE)

Default = ‘0’
0 - Disabled
1-Enabled

Note: When Auto Map Increment is enabled, the register must be written it two separate blocks: from
register 01h to 08h and then from 09h and 11h. The counter will not auto-increment to register 09h from
register 08h

6.5.2 MAP4-0 (MEMORY ADDR ESS POINTER)

Default = ‘00000’

CS4383

30

CS4383

0

20

40

60

Amplitude (dB)

80

100

120

0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

0

20

40

60

Amplitude (dB)

80

100

120

0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6

Frequency(normalized to Fs)

Figure 9. Single Speed (fast) Stopband Rejection Figure10. Single Speed (fast) T ransition Band

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.02

0.015

0.01

0.005

0

Amplitude (dB)

0.005

0.01

0.015

0.02
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

Frequency(normalized to Fs)

Figure 11. Single Speed (fast) Transition Ban d (detail) Figure 12. Single Speed (fast) Passband Ripple

0

20

40

60

Amplitude (dB)

80

100

120

0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

0

20

40

60

Amplitude (dB)

80

100

120

0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6

Frequency(normalized to Fs)

Figure 13. Single Speed (slow) Stopband Rejection Figure 14. Single Speed (slow) Transition Band

31

CS4383

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.02

0.015

0.01

0.005

0

Amplitude (dB)

0.005

0.01

0.015

0.02
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

Frequency(normalized to Fs)

Figure 15. Single Speed (slow) Tr ansition Band (detail) Figure 16. Single Speed (slow) Passband Ripple

0

20

40

60

Amplitude (dB)

80

0

20

40

60

Amplitude (dB)

80

100

120

0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

100

120

0.4 0.42 0.44 0.46 0.48 0.5 0.52 0.54 0.56 0.58 0.6

Frequency(normalized to Fs)

Figure 17. Do uble Speed (fast) Stopband Rejection Figure 18. Do uble Speed (fast) Transition Band

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.02

0.015

0.01

0.005

0

Amplitude (dB)

0.005

0.01

0.015

0.02
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5

Frequency(normalized to Fs)

Figure 19. Double Speed (fast) Transition Band (detail) Figure 20. Double Speed (fast) Passband Ripple

32

CS4383

0

20

40

60

Amplitude (dB)

80

100

120

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

0

20

40

60

Amplitude (dB)

80

100

120

0.2 0.3 0.4 0.5 0.6 0.7 0.8

Frequency(normalized to Fs)

Figure 21. Do uble Speed (slow) Stopband Rejection Fi g ure 22. Double Speed (slow) Tr a nsi tion Band

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.02

0.015

0.01

0.005

0

Amplitude (dB)

0.005

0.01

0.015

0.02
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35

Frequency(normalized to Fs)

Figure 23. DoubleSpeed (slow) T ransition Band (detail) Figure 24. Double Speed (slow) P assba nd Ripple

0

20

40

60

Amplitude (dB)

80

100

120

0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

0

20

40

60

Amplitude (dB)

80

100

120

0.2 0.3 0.4 0.5 0.6 0.7 0.8

Frequency(normalized to Fs)

Figure 25. Qua d Speed (fast) Stopband Rejection Figure 26. Quad Speed (fast) Transition Band

33

CS4383

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.2

0.15

0.1

0.05

0

Amplitude (dB)

0.05

0.1

0.15

0.2
0 0.05 0.1 0.15 0.2 0.25

Frequency(normalized to Fs)

Figure 27. Qua d Speed (fast) Transition Ba nd (detail) Figure 28. Quad Speed (fast) Passba nd Ripple

0

20

40

60

Amplitude (dB)

80

0

20

40

60

Amplitude (dB)

80

100

120

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

Frequency(normalized to Fs)

100

120

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

Frequency(normalized to Fs)

Figure 29. Quad Speed (slo w) Stopband Rejectio n Figure 30. Quad Speed (slow) Transition Band

0

1

2

3

4

5

Amplitude (dB)

6

7

8

9

10

0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55

Frequency(normalized to Fs)

0.02

0.015

0.01

0.005

0

Amplitude (dB)

0.005

0.01

0.015

0.02
0 0.02 0.04 0.06 0.08 0.1 0.12

Frequency(normalized to Fs)

Figure 31. Quad Speed (slow) Transition Band (detail) Figure 32. Quad Speed (slow) Passband Ripple

34

CS4383

LRCK

SCLK

SDINx +3 +2 +1+5 +4-1 -2 -3 -4 -5 +3 +2 +1+5 +4

MSB LSB MSB LSB

Left Channel

-2 -3 -4

-1

Right Channel

Figure 33. Format 0 - L eft Justified up to 24-bit Data

LRCK

SCLK

SDINx +3 +2 +1+5 +4

MSB

-1 -2 -3 -4 -5

Left Channel

MSBLSB LSB

-1 -2 -3 -4

Right Channel

Figure 34. Format 1 - I2S up to 24-bit Data

LRCK

SCLK

Left Channel

Right Channel

+3 +2 +1+5 +4

SDINx

LRCK

SCLK

SDINx

15 14 13 12 11 10

32 clocks

6543210987

15 14 13 12 11 10

6543210987

Figure 35. Format 2 - Right Justified 16-bit Data

Left Channel

0

23 22 21 20 19 18

32 clocks

65432107

23 22 21 20 19 18

Right Channel

65432107

Figure 36. Format 3 - Right Justified 24-bit Data

35

CS4383

LRCK

SCLK

SDINx

10 6543210987

17 16 17 16

19 18 19 18

Left Channel

15 14 13 12 11 10

32 clocks

6543210987

15 14 13 12 11 10

Figure 37. Format 4 - Right Justified 20-bit Data

LRCK

SCLK

SDINx

10

LeftChannel

654321098715 14 13 12 11 10

32 clocks

Figure 38. Format 5 - Right Justified 18-bit Data

Gain

dB

Right Channel

Right Channel

654321098715 14 13 12 11 1017 16 17 16

SDINx

T1=50 µs

0dB

T2 = 15 µs

-10dB

F1 F2

3.183 kHz 10.61 kHz

Frequency

Figure 39. De-Emphasis Curve

L

DAC

Channel

Pair x

Control

R

DAC

Figure 40. Channel Pair Routing Diagram (x = Channel Pair 1, 2, 3, or 4)

AOUTAx+

AOUTAx-

AOUTBx+

AOUTBx-

36

CS4383

SDINx

Left Channel

Audio Data

Right Channel

Audio Data

Figure 41. ATAPI Block Diagram (x = channel pair 1, 2, 3, or 4)

A Channel

Volume

Control

MUTE

AoutAx

ΣΣ

B Channel

Volume

Control

MUTE

AoutBx

Figure 42. Recommended Output Filter

37

7. PARAMETER DEFINITIONS

To tal Harmonic Distortion + Noise (THD+N)

The ratio of the rms value of the signal to the rms sum of all other spectral component s over the specified
bandwidth (typically 10Hz to 20kHz), including distortion components. Expressed in decibels.

Dynamic Range

The ratio of the full scal e rms value of the signal to the rms sum of all oth er spectral comp onents over the
specified bandwidth. Dynamic range is a signal-to-noise measurem ent over the specified bandwidth
made with a -60 dBFS signal. 60 dB is thenadde d to the resulting measurementto refer the measurement
to full scale. This technique ensures that the distortion component s are below the noise level and do not
effect the m eas urement. This measurement technique has been accepted by the A udio Engineering So­ciety, AES17-1991, and the Electronic Industries Association of Japan, EIAJ CP-307.

Interchannel Isolation

A measure of crosstalk between the left and right channels. Measured for each channel at the converter's
output with al l zeros to the input under test and a full-scale signal applied to t he other cha nnel. Units in
decibels.

Interchannel Gain Mismatch

The gain dif fe re nc e betwee n left and right channels. Units in decibels.

CS4383

Gain Error

The deviation from the nominal full scale analog output for a full s cale digital input.

Gain Drift

The change in gain value with temperature. Units in ppm/°C.

8. REFERENCES

1. "How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Convert ers" by Steven Harris.
Paper presented at the 93rd Convention of the Audio Engineering Society, October 1992.

2. CDB4383 Evaluation Board Datasheet

3. “Design Notes for a 2-Pole Filter with Differential Input” by Steven Green. Cirrus Logic Application Note
AN48

4. “The I

2

C-Bus Spec ification: Version 2.0” Philips S emiconductors, December 1998.

http://www.semiconductors.philips.com

38

9. PACKAGE DIMENSIONS

48L LQFP PACKAGE DRAWING

D1

D

CS4383

E

E1

1

e

∝

B

A

A1

L

INCHES MILLIMETERS

DIM MIN NOM MAX MIN NOM MAX

A --- 0.055 0.063 --- 1.40 1.60

A1 0.002 0.004 0.006 0.05 0.10 0.15

B 0.007 0.009 0.011 0.17 0.22 0.27

D 0.343 0.354 0.366 8.70 9.0 BSC 9.30

D1 0.272 0.28 0.280 6.90 7.0 BSC 7.10

E 0.343 0.354 0.366 8.70 9.0 BSC 9.30

E1 0.272 0.28 0.280 6.90 7.0 BSC 7.10

e* 0.016 0.020 0.024 0.40 0.50 BSC 0. 60

L 0.018 0.24 0.030 0.45 0.60 0.75

∝

* Nominal pin pitch is 0.50 mm

0.000° 4° 7.000° 0.00° 4° 7.00°

Controlling dimension is mm.
JEDEC Designation: MS022

39