Cirrus-logic CS4364 Manuale Utente

Copyright © Cirrus Logic, Inc. 2008(All Rights Reserved)http://www.cirrus.com103 dB, 192 kHz 6-Channel D/A ConverterFeatures Advanced Multi-bit Delta

10 DS619F1CS4364POWER AND THERMAL CHARACTERISTICS Notes:4. Current consumption increases with increasing FS within a given speed mode and is signal

DS619F1 11CS4364COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSEThe filter characteristics have been normalized to the sample rate (Fs) and

12 DS619F1CS4364COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE(CONTINED)DSD COMBINED DIGITAL & ON-CHIP ANALOG FILTER RESPONSEParamete

DS619F1 13CS4364DIGITAL CHARACTERISTICS13. Any pin except supplies. Transient currents of up to ±100 mA on the input pins will not cause SCR latch-upP

14 DS619F1CS4364SWITCHING CHARACTERISTICS - PCM(Inputs: Logic 0 = GND, Logic 1 = VLS, CL = 30 pF) Notes:14. After powering up, RST should be held

DS619F1 15CS4364SWITCHING CHARACTERISTICS - DSD(Logic 0 = AGND = DGND; Logic 1 = VLS; CL=30pF) Parameter Symbol Min Typ Max UnitMCLK Duty Cycle 40 -

16 DS619F1CS4364SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT(Inputs: Logic 0 = GND, Logic 1 = VLC, CL=30pF)Notes:16. Data must be held for su

DS619F1 17CS4364SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT (Inputs: Logic 0 = GND, Logic 1 = VLC, CL=30pF)Notes:17. tspi only needed before

18 DS619F1CS43643. TYPICAL CONNECTION DIAGRAM VLSMCL KVDAOUT18320.1 µF+1 µF+2.5 VSDIN191 µF0.1 µF++2021FILT+CMOUT76LRCKSCLKSDIN3SDIN2390.1 µF47 µ

DS619F1 19CS4364 VLSCS4364MCL KVDAOUT18320.1 µF+1 µF+2.5 VSDIN191 µF0

2 DS619F1CS4364TABLE OF CONTENTS1. PIN DESCRIPTION...

20 DS619F1CS43644. APPLICATIONS The CS4364 serially accepts twos complement formatted PCM data at standard audio sample rates including 48,44.1 and 32

DS619F1 21CS43644.2 Mode SelectIn Hardware Mode, operation is determined by the Mode Select pins. The states of these pins are continu-ally scanned f

22 DS619F1CS43644.3 Digital Interface Formats The serial port operates as a slave and supports the I²S, Left-Justified, Right-Justified, and One-Line

DS619F1 23CS4364 4.3.1 OLM #1OLM #1 serial audio interface format operates in Single-, Double-, or Quad-Speed Mode and will slave toSCLK at 128 Fs. Si

24 DS619F1CS43644.5 Interpolation FilterTo accommodate the increasingly complex requirements of digital audio systems, the CS4364 incorporatesselectab

DS619F1 25CS43644.7 ATAPI SpecificationThe CS4364 implements the channel mixing functions of the ATAPI CD-ROM specification. TheATAPI functions are a

26 DS619F1CS4364 Figure 18. DSD Phase Modulation Mode Diagram4.9 Grounding and Power Supply ArrangementsAs with any high resolution converter, the CS

DS619F1 27CS4364 4.11 The MUTEC OutputsThe MUTEC1 pins have an auto-polarity detect feature. The MUTEC output pins are high impedance at thetime of

28 DS619F1CS4364 Figure 21. Recommended Mute Circuitry 4.12 Recommended Power-Up Sequence4.12.1 Hardware Mode1. Hold RST low until the power supplies

DS619F1 29CS4364converted incorrectly by the Hardware Mode settings).4. Set the PDN bit to 0. This will initiate the power-up sequence, which lasts ap

DS619F1 3CS43646.3 PCM Control (Address 03h) ...

30 DS619F1CS43644.14.2.2 I²C ReadTo read from the device, follow the procedure below while adhering to the control port Switching Specifica-tions.1. I

DS619F1 31CS43646. If the INCR bit is set to 0 and further SPI writes to other registers are desired, it is necessary to bringCS high, and follow the

32 DS619F1CS43645. REGISTER QUICK REFERENCE Addr Function 7 6 5 4 3 2 1 001h Chip Revision PART4 PART3 PART2 PART1 PART0 REV2 REV1 REV0default 0 1 1 0

DS619F1 33CS43646. REGISTER DESCRIPTIONNote: All registers are read/write in I²C Mode and write only in SPI, unless otherwise noted.6.1 Chip Revision

34 DS619F1CS43646.2.3 PCM/DSD Selection (DSD/PCM)Default = 00 - PCM1 - DSDFunction:This function selects DSD or PCM Mode. The appropriate data and clo

DS619F1 35CS4364 6.3.2 Functional Mode (FM)Default = 1100 - Single-Speed Mode (4 to 50 kHz sample rates)01 - Double-Speed Mode (50 to 100 kHz sample r

36 DS619F1CS43646.4.2 Direct DSD Conversion (DIR_DSD)Function:When set to 0 (default), DSD input data is sent to the DSD processor for filtering and v

DS619F1 37CS43646.5 Filter Control (Address 05h)6.5.1 Interpolation Filter Select (FILT_SEL) Function:When set to 0 (default), the Interpolation Filte

38 DS619F1CS4364Function:The AOUTAx and AOUTBx volume levels are independently controlled by the A and the B Channel Vol-ume Control Bytes when this f

DS619F1 39CS4364sample rate) if the signal does not encounter a zero crossing. The zero cross function is independentlymonitored and implemented for e

4 DS619F1CS4364LIST OF FIGURESFigure 1. Serial Audio Interface Timing...

40 DS619F1CS43646.8.6 MUTE Polarity and DETECT (MUTEP1:0) Default = 0000 - Auto polarity detect, selected from MUTEC1 pin01 - Reserved 10 - Active low

DS619F1 41CS4364Selects the appropriate digital filter to maintain the standard 15 µs/50 µs digital de-emphasis filter re-sponse at 32, 44.1 or 48 kHz

42 DS619F1CS43646.11 Volume Control (Address 0Bh, 0Ch, 0Eh, 0Fh, 11h, 12h)These six registers provide individual volume and mute control for each of t

DS619F1 43CS43647. FILTER RESPONSE PLOTS 0.4 0.5 0.6 0.7 0.8 0.9 1−120−100−80−60−40−200Frequency(normalized to Fs)Amplitude (dB)0.4 0.42 0.44 0.46 0.4

44 DS619F1CS4364 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5−0.02−0.015−0.01−0.00500.0050.010.0150.02Frequency(normalized to Fs)Amplitude (dB)0.4

DS619F1 45CS4364 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1120100806040200Frequency(normalized to Fs)Amplitude (dB)0.2 0.3 0.4 0.5 0.6 0.7 0.8120100806040200

46 DS619F1CS4364 0.45 0.46 0.47 0.48 0.49 0.5 0.51 0.52 0.53 0.54 0.55109876543210Frequency(normalized to Fs)Amplitude (dB)0 0.05 0.1 0.15 0.2 0.250

DS619F1 47CS43648. REFERENCES1. How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Converters, by Steven Harris. Paperpresented at the

48 DS619F1CS436410.PACKAGE DIMENSIONSINCHES MILLIMETERSDIM MIN NOM MAX MIN NOM MAXA --- 0.055 0.063 --- 1.40 1.60A1 0.002 0.004 0.006 0.05 0.10 0.15B

DS619F1 49CS436411.ORDERING INFORMATIONProduct Description Package Pb-Free Grade Temp Range Container Order #CS4364114 dB, 192 kHz 6-channel D/A Conve

DS619F1 5CS4364LIST OF TABLESTable 1. Single-Speed Mode Standard Frequencies ...

50 DS619F1CS436412.REVISION HISTORY Release ChangesA1 Initial ReleaseF1Corrected DAC Pair Disable register description in “DAC Pair Disable (DACx_DIS)

6 DS619F1CS43641. PIN DESCRIPTIONPin Name # Pin DescriptionVD 4Digital Power (Input) - Positive power supply for the digital section. Refer to the Rec

DS619F1 7CS4364FILT+ 20Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling cir-cuits. Requires the capacitive d

8 DS619F1CS43642. CHARACTERISTICS AND SPECIFICATIONSRECOMMENDED OPERATING CONDITIONS(GND = 0 V; all voltages with respect to ground.)ABSOLUTE MAXIMUM

DS619F1 9CS4364DAC ANALOG CHARACTERISTICSTest Conditions (unless otherwise indicated): VA = VLS = VLC = 5 V; VD = 2.5 V; TA = 25 °C; Full-Scale 997 Hz