Cirrus Logic CS4227-KQ, CS4227-BQ, CS4227 Datasheet

Six Channel, 20-Bit Codec

CS4227

Features

l Stereo 20-bit A/D Converters l Six 20-bit D/A Converters l 108 dB DAC Signal-to-Noise Ratio (EIAJ) l Mono 20-bit A/D Converter l Programmable Input Gain & Output

Attenuation

l On-chip Anti-aliasing and Output Smoothing

Filters

l De-emphasis for 32 kHz, 44.1 kHz, 48 kHz

PDN

LRCK

SCLK SDIN1 SDIN2 SDIN3

SDOUT1 SDOUT2

OVL

DEM

SCL/CCLK

DEM

CLKOUT XTI XTO

Serial Audio Data Interface

Clock Osc/

SDA/CDOUT

Control Port

MUX

Divider

AD1/CDIN AD0/CS SPI/I2C

DAC#1

DAC#2

DAC#3

DAC#4

Digital Filters

DAC#5

DAC#6

Mono

ADC Left

ADC

Digital Filters

HOLD

Right

ADC

DATAUX

Description

The CS4227 is a si ng le- c hi p codec providing st ereo analog-to-digital and six digital-to-anal og converters us ing delta-sigma conversion techniques. This +5 V device also contains volume controls that are independently selectable for each of the six D/A chan nels. Applications include Dolby

3™ home theater syste ms, DSP based car audio sy stems, and other multi-channel applications.

ORDERING INFORMATION

CS4227-KQ -10° to +70° C 44-pin TQFP CS4227-BQ -40° to +85° C 44-pin TQFP CDB4227 Evaluation Board

Volume

Control

Volume

Control

Volume

Control

Volume

Control

Volume

Control

Volume

Control

Auxiliary Input

LRCKAUX SCLKAUX DGND1 DGND2

Pro-logic™, THX®, and Dolby Digital AC-

VD+

VA+

Input

Voltage

Reference

Output Stage

Analog Low Pass and

Gain

Input MUX

CMOUT AOUT1

AOUT2

AOUT3

AOUT4

AOUT5

AOUT6 AINAUX

AIN1L AIN1R

AIN2L AIN2R

AIN3L AIN3R

AGND1 AGND2

Preliminary Product Information

P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com

This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.

DS281PP2

SEP ‘99

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

ANALOG CHARACTERISTICS................................................................................................ 4

SWITCHING CHARACTERISTICS ....... ....... ...... ....... ...... ...... ....... ...... ....... ...... ....... ...... ....... ..... 6

SWITCHING CHARACTERISTICS - CONTROL PORT........................................................... 8

ABSOLUTE MAXIMUM RATINGS .........................................................................................10

RECOMMENDED OPERATING CONDITIONS.....................................................................10

DIGITAL CHARACTERISTICS...............................................................................................10

2. FUNCTIONAL DESCRIPTION ...............................................................................................12

2.1 Overview ..........................................................................................................................12

2.2 Analog Inputs ................................................................................................................... 12

2.2.1 Line Level Inputs .................................................................................................12

2.2.2 Adjustable Input Gain ..........................................................................................13

2.2.3 High Pass Filter ...................................................................................................13

2.3 Analog Outputs ................................................................................................................ 13

2.3.1 Line Level Outputs .............................................................................................. 13

2.3.2 Output Level Attenuator ...................................................................................... 14

2.4 Clock Generation ............................................................................................................. 14

2.4.1 Clock Source .......................................................................................................14

2.4.2 Master Clock Output ...........................................................................................14

2.4.3 Synchronization ................................................................................................... 14

2.5 Digital Interfaces .............................................................................................................. 15

2.5.1 Audio DSP Serial Interface Signals ..................................................................... 15

2.5.2 Audio DSP Serial Interface Formats ...................................................................15

2.5.3 Auxiliary Audio Port Signals ................................................................................15

2.5.4 Auxiliary Audio Port Formats ...............................................................................15

2.6 Control Port Signals .........................................................................................................17

2.6.1 SPI Mode ............................................................................................................17

2C®

2.6.2 I

2.6.3 Control Port Bit Definitions ..................................................................................18

2.7 Power-up/Reset/Power Down Mode ................................................................................18

2.8 DAC Calibration ...............................................................................................................19

2.9 De-Emphasis ...................................................................................................................19

2.10 Hold Function .................................................................................................................19

Mode ...........................................................................................................18

CS4227

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/

Dolby is a registered trademark of Dolby Labratories Licensing Corporation. Pro Logic, and AC-3 are trademarks of Dolby Labratories Licensing Corporation. THX is a registered trademark of LucasArts Entertainment Company. Preliminary product info rmation describes products which are i n p r od ucti on, b ut for which full characteriza ti on da t a i s not yet available. Advance produ ct i nf or -

mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained in this document is accurate and reli able. However , the i nformati on is sub ject to change with out no tice and i s provi ded “AS IS” withou t warranty of

any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This document i s the propert y of Cirru s Logic, Inc. and implie s no licen se under patent s, copyri ghts, trademarks, or tr ade secrets. No part of this publication may be copied, reproduced , stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the pri or wri tt en consen t of Ci rrus Logic, Inc. Items from any Cirrus Logic websi t e or di sk may be pri nted for use by the user. However, no part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at http://www.cirrus.com.

2 DS281PP2

2.11 Power Supply, Layout, and Grounding .......................................................................... 19

2.12 ADC and DAC Filter Response Plots ............................................................................ 20

3. PIN DESCRIPTIONS ....................... ...... ....... ............................................. ...... ....... ................ 29

4. PARAMETER DEFINITIONS .................................................................................................. 33

5. PACKAGE DIMENSIONS ...................................................................................................... 34

LIST OF FIGURES

Figure 1. Audio Ports Master Mode Timing..................................................................................... 7

Figure 2. Audio Ports Slave Mode and Data I/O Timing................................................................. 7

Figure 3. Control Port SPI Mode..................................................................................................... 8

Figure 4. Control Port I

Figure 5. Recommended Connection Diagram............................................................................. 11

Figure 6. Optional Line Intput Buffer............................................................................................. 12

Figure 7. Butterworth Filters................... ...... ....... ...... ............................................. ....................... 13

Figure 8. Audio DSP and Auxiliary Port Data Input Formats ........................................................ 16

Figure 9. Audio DSP Port Data Output Formats ........................................................................... 16

Figure 10. One Data Line Modes..................................................................................................16

Figure 11. Control Port Timing, SPI Mode .................................................................................... 17

Figure 12. Control Port Timing, I

Figure 13. De-emphasis Curve..................................................................................................... 19

Figure 14. Suggested Layout Guideline........................................................................................ 20

Figure 15. 20-bit ADC Filter Response......................................................................................... 21

Figure 16. 20-bit ADC Passband Ripple....................................................................................... 21

Figure 17. 20-bit ADC Transition Band......................................................................................... 21

Figure 18. DAC Frequency Response.......................................................................................... 21

Figure 19. DAC Passband Ripple................................................................................................. 21

Figure 20. DAC Transition Band................................................................................................... 21

CS4227

C Mode.......................... ...... ....... ...... ...... ....... ...... ....... ...... ......................... 9

2C®

Mode................................................................................... 18

LIST OF TABLES

Table 1. Single-ended vs Differential Input Pin Assignments.............................................................. 12

Table 2. High Pass Filter Characteristics ............................................................................................ 13

Table 3. DSP Serial Input Ports........................................................................................................... 15

DS281PP2 3

1. CHARACTERISTICS AND SPECIFICATIONS

CS4227

ANALOG CHARACTERISTICS (T

Fs = 44.1 kHz; Measurement Bandwidth is 20 Hz to 20 kHz; Local components as shown in Figure 5; SPI mode, Format 3, unless otherwise specified.)

Parameter Symbol

Analog Input Characteristics

ADC Resolution Stereo Audio channels

Total Harmonic Distortion THD 0.003 - 0.003 - % Dynamic Range (A weighted, Stereo)

Total Harmonic -1 dB, Stereo (Note 1) Distortion + Noise -1 dB, Mono (Note 1)

Interchannel Isolation - 90 - - 90 - dB Interchannel Gain Mismatch - 0.1 - - 0.1 - dB Programmable Input Gain Span 8 9 10 8 9 10 dB Gain Step Size 2.7 3 3.3 2.7 3 3.3 dB Offset Error (with high pass filter) - - 0 - - 0 LSB Full Scale Input Voltage (Single Ended): 0.90 1.0 1.10 0.90 1.0 1.10 Vrms Gain Drift - 100 - - 100 -

Input Resistance (Note 2) 10 - - 10 - - k Input Capacitance - - 15 - - 15 pF CMOUT Output Voltage - 2.3 - - 2.3 - V

- Minimum gain setting (0 dB) Differential Input; unless otherwise specified.

Mono channel

(unweighted, Stereo)

(A weighted, Mono)

= 25 °C; VA+, VD+ = +5 V; Full Scale Input Sine wave, 997 kHz;

CS4227-KQ CS4227-BQ

UnitsMin Typ Max Min Typ Max

16 16

THD+N -

95 92

-88--82

-72

16 16

90 87

93 90

-86--80

-70

Bits Bits

dB dB dB

dB dB

ppm/°C

Ω

A/D Decimation Filter Characteristics

Passband (Note 3) 0.02 - 20.0 0.02 - 20.0 kHz Passband Ripple - - 0.01 - - 0.01 dB Stopband (Note 3) 27.56 Stopband Attenuation (Note 4) 80 - - 80 - - dB

Group Delay (Fs = Output Sample Rate)

Group Delay Variation vs. Frequency

(Note 5) t

∆

- 15/Fs - - 15/Fs - s

--0--0µs

5617.2

27.56 -

5617.2

kHz

Notes: 1. Referenced to typical full-scale differential input voltage (2Vrms).

2. Input resistance is for the input selected. Non-selected inputs have a very high (>1MΩ) input resistance. The input resistance will vary with gain value selected, but will always be greater than the min. value specified.

3. Filter characteristics scale with output sample rate.

4. The analog modulator samples the input at 5.6448 MHz for an output sample rate of 44.1 kHz. There is no rejection of input signals which are multiples of the sampling frequency (n x 5.6448 MHz ±20.0 kHz where n = 0,1,2,3...).

5. Group delay for Fs = 44.1 kHz, t

4 DS281PP2

= 15/44.1 kHz = 340 µs

CS4227

ANALOG CHARACTERISTICS (Continued)

CS4227-KQ CS4227-BQ

Parameter Symbol

High Pass Filter Characteristics

Frequency Response: -3 dB (Note 3)

-0.13 dB Phase Deviation @ 20 Hz (Note 3) - 10 - - 10 - Deg. Passband Ripple - - 0 - - 0 dB

Analog Output Characteristics

DAC Resolution 16 - 20 16 - 20 Bits Signal-to-Noise/Idle (DAC muted, A weighted)

Channel Noise Dynamic Range (DAC not muted, A weighted)

(DAC not muted, unweighted) Total Harmonic Distortion THD - 0.003 - - 0.003 - % Total Harmonic Distortion + Noise (Stereo) THD+N - -88 -83 - -86 -81 dB Interchannel Isolation - 90 - - 90 - dB Interchannel Gain Mismatch - 0.1 - - 0.1 - dB Attenuation Step Size (All Outputs) 0.7 1 1.3 0.7 1 1.3 dB Programmable Output Attenuation Span -84 -86 - -84 -86 - dB Offset Voltage (relative to CMOUT) - ±15 - - ±15 - mV

Full Scale Output Voltage 0.92 1.0 1.08 0.92 1.0 1.08 Vrms Gain Drift - 100 - - 1 00 -

Out-of-Band Energy (Fs/2 to 2Fs) - -60 - - -60 - dBFs Analog Output Load Resistance:

- Minimum Attenuation, 10 k, 100 pF load; unless otherwise specified.

Capacitance:

3.4

101 108 - 99 106 - dB

100

3.4

100

Combined Digital and Analog Filter Characteristics

Frequency Response 10 Hz to 20 kHz - ±0.1 - - ±0.1 - dB Deviation from Linear Phase - ±0.5 - - ±0.5 - Deg. Passband: to 0.01 dB corner (Notes 6, 7) 0 - 20.0 0 - 20.0 kHz Passband Ripple (Note 7) - - ±0.01 - - ±0.01 dB Stopband (Notes 6 ,7) 24.1 - - 24.1 - - kHz Stopband Attenuation (Note 8) 70 - - 70 - - dB Group Delay (Fs = Input Word Rate) (Note 5) tgd - 16/Fs - - 16/Fs - s

Analog Loopback Performance

Signal-to-noise Ratio (CCIR-2K weighted, -20 dB input)

CCIR-2K

-71- -71-dB

Power Supply

Power Supply Current Operating

Power Down

Power Supply Rejection (1 kHz, 10 mV

Notes: 6. The passband and stopband edges scale with frequency. For input word rates, Fs, other than 44.1 kHz,

the 0.05 dB passband edge is 0.4535xFs and the stopband edge is 0.5465xFs.

7. Digital filter characteristics.

8. Measurement bandwidth is 10 H z to 3Fs. Specifications are subject to change without notice

) - 45 - - 45 - dB

rms

901113

9011153mA

UnitsMin Typ Max Min Typ Max

Hz Hz

dB dB

ppm/°C

Ω

k pF

DS281PP2 5

CS4227

384

()

--------------------- 20+

SWITCHING CHARACTERISTICS (T

= 25 °C; VA+, VD+ = +5 V ±5%; outputs loaded with 30 pF.)

Parameter Symbol Min Typ Max Unit

Audio ADC’s and DAC’s Sample Rate Fs 4 - 50 kHz XTI Frequency XTI = 256, 384, or 512 Fs 1.024 - 26 MHz XTI Pulse Width High XTI = 512 Fs

XTI = 384 Fs XTI = 256 Fs

XTI Pulse Width Low XTI = 512 Fs

XTI = 384 Fs XTI = 256 Fs

10 21 31

XTI Jitter Tolerance - 500 - ps CLKOUT Jitter (Note 9) - 200 - psRMS CLKOUT Duty Cycle (high timer/cycle time) (Note 10) 40 50 60 %

PDN

Low Time (Note 11) SCLK Falling Edge to SDOUT Output Valid DSCK = 0 t LRCK edge to MSB valid t SDIN Setup Time Before SCLK Rising Edge DSCK = 0 t SDIN Hold Time After SCLK Rising Edge DSCK = 0 t

dpd lrpd

ds dh

500 - - ns

- - Note 12 ns

- - 40 ns

- - 25 ns

Master Mode

SCLK Falling to LRCK Edge DSCK = 0 t

mslr

-±10-ns SCLK Period (Note 14) - - - - SCLK Duty Cycle - 50 - %

Slave Mode

SCLK Period t SCLK High Time t SCLK Low Time t SCLK Rising to LRCK Edge DSCK = 0 t LRCK Edge to SCLK Rising DSCK = 0 t

sckw

sckh

sckl

lrckd

lrcks

Note 13 - - ns

40 - - ns 40 - - ns 20 - - ns 40 - - ns

Notes: 9. CLKOUT Jitter is for 256x Fs selected as output frequency measured from falling edge to falling edge.

Jitter is greater for 384x Fs and 512x Fs as selected output frequency.

10. For CLKOUT frequency equal to 1x Fs, 384x Fs, and 512x Fs. See Master Clock Output section.

11. After powering up the CS4227, PDN

should be held low for 1 ms to allow the power supply to settle.

12.

13.

14.

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

()

128

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

256()

6 DS281PP2

SCLK* SCLKAUX* (output)

LRCK LRCKAUX (output)

SDOUT1 SDOUT2

Figure 1. Audio Ports Master Mode Timing

LRCK

LRCKAUX

(input)

lrckd

lrcks

sckh

mslr

sckl

CS4227

SCLK*

SCLKAUX*

(input)

SDIN1 SDIN2 SDIN3

DATAUX

SDOUT1

SDOUT2

*SCLK, SCLKAUX shown for DSCK = 0 and ASCK = 0. SCLK & SCLKAUX inverted for DSCK = 1 and ASCK = 1, respectively.

lrpd

MSB

sckw

dpd

MSB-1

Figure 2. Audio Ports Slave Mode and Data I/O Timing

DS281PP2 7

CS4227

SWITCHING CHARACTERISTICS - CONTROL PORT (T

Inputs: logic 0 = DGND, logic 1 = VD+; C

= 30 pF)

= 25 °C; VA +, VD+ = +5 V ± 5 %;

Parameter Symbol Min Max Unit

SPI Mode (SPI/I2C = 0)

CCLK Clock Frequency f CS

High Time Between Transmissions

Falling to CCLK Edge CCLK Low Time t CCLK High Time t CDIN to CCL Rising Setup Time t CCLK Rising to DATA Hold Time (Note 15) t CCLK Falling to CDOUT stable t Rise Time of CDOUT t Fall Time of CDOUT t Rise Time of CCLK and CDIN (Note 16) t Fall Time of CCLK and CDIN (Note 16) t

t t

sck csh

css

scl sch dsu

dh pd

r1 f1 r2 f2

-6MHz

1.0 - µs 20 - ns 66 - ns

66 - ns 40 - ns 15 - ns

-45ns

-25ns

- 100 ns

Notes: 15. Data must be held for sufficient time to bridge the transition time of CCLK.

16. For F

< 1 MHz.

SCK

CCLK

CDIN

CDOUT

css

scl

sch

dsu

Figure 3. Control Port SPI Mode

csh

8 DS281PP2

CS4227

SWITCHING CHARACTERISTICS - CONTROL PORT (T

Inputs: logic 0 = DGND, logic 1 = VD+; C

Parameter Symbol Min Max Unit

I2C® Mode (SPI/I2C = 1) (Note 17)

SCL Clock Frequency f Bus Free 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 for SCL Falling (Note 18) t SDA Setup Time to SCL Rising t Rise Time of Both SDA and SCL Lines t Fall Time of Both SDA and SCL Lines t Setup Time for Stop Condition t

2C®

Notes: 17. I

is a registered trademark of Philips Semiconductors.

18. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.

Stop Start

= 30 pF)

scl

buf

hdst

low high sust hdd sud

r f

susp

Repeated

Start

= 25 °C; VA+, VD+ = +5 V ± 5 %;

-100kHz

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

Stop

SDA

SCL

buf

hdst

low

high

hdd

sud

sust

hdst

susp

Figure 4. Control Port I2C Mode

DS281PP2 9

CS4227

ABSOLUTE MAXIMUM RATINGS (AGND, DGND = 0 V, all voltage with respect to 0 V.)

Parameter Symbol Min Max Unit

Power Supplies Digital

Analog Input Current (Note 19) - ±10 mA Analog Input Voltage (Note 20) -0.7 (VA+) + 0.7 V Digital Input Voltage (Note 20) -0.7 (VD+) + 0.7 V Ambient Temperature (Power Applied) -55 +125 °C Storage Temperature -65 +150 °C

Notes: 19. Any pin except supplies. Transient currents of up to ±100 mA on the analog input pins will not cause

SCR latch-up.

20. The maximum over or under voltage is limited by the input current.

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

Normal operation is not guaranteed at these extremes.

RECOMMENDED OPERATING CONDITIONS (AGND, DGND = 0 V, all voltage with respect to

0 V.)

VD+

VA+

-0.3

6.0

Parameter Symbol Min Typ Max Unit

Power Supplies Digital |VA+ - VD+| < 0.4 V Analog

Operating Ambient Temperature T

DIGITAL CHARACTERISTICS (T

Parameter Symbol Min Max Unit

High-level Input Voltage (Except XTI) V Low-level Input Voltage (Except XTI) V High-level Output Voltage (Except XTO) V Low-level Out put Voltage (Except XTO) V Input Leakage Current (Digital Inputs) - 10 µA Output Leakage Current (High-Impedance Digital Outputs) - 10 µA

= 25 °C; VA+, VD+ = +5 V ±5%)

VD+

VA+

4.75

-10 25 70 °C

2.8 (VD+) + 0.3 V

-0.3 0.8 V

(VD+) - 1.0 - V

5.0

-0.4V

5.25

10 DS281PP2

CS4227

+5V Supply

To Optional

Input and

Output Buffers

From Optional Input Buffer

Digital

Audio

Source

Ferrite Bead

10 µF

1 µF 0.1 µF

S S

27 2

2.0

Ω

VA+ VD+

CMOUT

AIN1L

AIN1R

AIN2L

AIN2R

AIN3L

AIN3R

AINAUX

DEM HOLD

DATAUX LRCKAUX

SCLKAUX

1 µF 0.1 µF

CS4227

AOUT1

AOUT2

AOUT3

AOUT4

AOUT5

AOUT6

SCL/CCLK

SDA/CDOUT

AD0/CS

AD1/CDIN

ANALOG FILTER

3 4 6 5

Microcontroller

Mode

Setting

R = 50

Ω

All unused digital inputs should be tied to 0V. Unused analog inputs should be left unconnected.

* Optional if analog inputs biased to within 1% of CMOUT

PDN

SPI/I2C

AGND1, 2 DGND1, 2 NC XTO XTI

39412018

29 28

SDIN1 SDIN2

SDIN3

SDOUT1 SDOUT2

LRCK

SCLK

CLKOUT

OVL

C1** C2**

34 33

36 35 37 38 31 30

External Clock Input

Audio

R R

DSP

Figure 5. Recommended Connection Diagram

(Also see recommended layout diagrams, Figure 14)

DS281PP2 11

+ 25 hidden pages

Cirrus Logic CS4227-KQ, CS4227-BQ, CS4227 Datasheet

Features

Description

ORDERING INFORMATION

TABLE OF CONTENTS

Contacting Cirrus Logic Support

LIST OF FIGURES

LIST OF TABLES

1. CHARACTERISTICS AND SPECIFICATIONS

ANALOG CHARACTERISTICS (T

Analog Input Characteristics

A/D Decimation Filter Characteristics

High Pass Filter Characteristics

Analog Output Characteristics

Combined Digital and Analog Filter Characteristics

Analog Loopback Performance

Power Supply

SWITCHING CHARACTERISTICS (T

Master Mode

Slave Mode

Figure 1. Audio Ports Master Mode Timing

Figure 2. Audio Ports Slave Mode and Data I/O Timing

SWITCHING CHARACTERISTICS - CONTROL PORT (T

SPI Mode (SPI/I2C = 0)

Figure 3. Control Port SPI Mode

I2C® Mode (SPI/I2C = 1) (Note 17)

Figure 4. Control Port I2C Mode

ABSOLUTE MAXIMUM RATINGS (AGND, DGND = 0 V, all voltage with respect to 0 V.)

RECOMMENDED OPERATING CONDITIONS (AGND, DGND = 0 V, all voltage with respect to

DIGITAL CHARACTERISTICS (T