Cirrus-logic CS4365 Manual do Utilizador

Copyright © Cirrus Logic, Inc. 2008(All Rights Reserved)http://www.cirrus.com114 dB, 192 kHz 6-Channel D/A ConverterFeatures Advanced Multi-bit Delta

10 DS670F2CS4365DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DQZ) Test Conditions (unless otherwise specified): VA = 4.75 to 5.25 V; VLS = 1.71 to 5.25 V

DS670F2 11CS4365POWER AND THERMAL CHARACTERISTICS Notes:4. Current consumption increases with increasing Fs within a given speed mode and is signal

12 DS670F2CS4365COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSEThe filter characteristics have been normalized to the sample rate (Fs) and

DS670F2 13CS4365COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE (CONTINUED)DSD COMBINED DIGITAL & ON-CHIP ANALOG FILTER RESPONSEParame

14 DS670F2CS4365DIGITAL CHARACTERISTICSNotes:13. Any pin except supplies. Transient currents of up to ±100 mA on the input pins will not cause SCR lat

DS670F2 15CS4365SWITCHING CHARACTERISTICS - PCMInputs: Logic 0 = GND, Logic 1 = VLS, CL = 20 pF. Notes:14. After powering up, RST should be held low

16 DS670F2CS4365SWITCHING CHARACTERISTICS - DSDLogic 0 = GND; Logic 1 = VLS; CL=20pF. Parameter Symbol Min Typ Max UnitMCLK Duty Cycle 40 - 60 %DS

DS670F2 17CS4365SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMATInputs: Logic 0 = GND, Logic 1 = VLC, CL=20pF.Notes:17. Data must be held for suf

18 DS670F2CS4365SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT Inputs: Logic 0 = GND, Logic 1 = VLC, CL=20pF.Notes:18. tspi is only needed befo

DS670F2 19CS43653. TYPICAL CONNECTION DIAGRAM VLSMCLKVDAOUTA1+8320.1 µF+1 µF+2.5 VSDIN191 µF0.1 µF++2021FILT+CMOUT76LRCKSCLKSDIN3SDIN239400.1 µF47 µF

2 DS670F2CS4365TABLE OF CONTENTS1. PIN DESCRIPTION ...

20 DS670F2CS4365 VLSCS4365MCLKVDAOUTA1+8320.1 µF+1 µF+2.5 VSDIN191 µF0

DS670F2 21CS43654. APPLICATIONS The CS4365 serially accepts two’s complement formatted PCM data at standard audio sample rates including 48,44.1 and 3

22 DS670F2CS43654.2 Mode SelectIn Hardware Mode, operation is determined by the Mode Select pins. The states of these pins are continu-ally scanned fo

DS670F2 23CS43654.3 Digital Interface Formats The serial port operates as a slave and supports the I²S, Left-Justified, Right-Justified, and One-Line

24 DS670F2CS43654.3.1 OLM #1OLM #1 serial audio interface format operates in Single-, Double-, or Quad-Speed Mode and will slave toSCLK at 128 Fs. Six

DS670F2 25CS43654.5 Interpolation FilterTo accommodate the increasingly complex requirements of digital audio systems, the CS4365 incorporatesselectab

26 DS670F2CS43654.7 ATAPI SpecificationThe CS4365 implements the channel-mixing functions of the ATAPI CD-ROM specification. TheATAPI functions are ap

DS670F2 27CS4365 4.9 Grounding and Power Supply ArrangementsAs with any high-resolution converter, the CS4365 requires careful attention to power supp

28 DS670F2CS43654.10 Analog Output and FilteringThe application note “Design Notes for a 2-Pole Filter with Differential Input” discusses the second-o

DS670F2 29CS43654.11 The MUTEC OutputsThe MUTEC1-6 pins have an auto-polarity detect feature. The MUTEC output pins are high impedance atthe time of r

DS670F2 3CS43656.2.3 PCM/DSD Selection (DSD/PCM) ... 356.2.4 DA

30 DS670F2CS43654.12.2 Software Mode1. Hold RST low until the power supply is stable, and the master and left/right clocks are locked to the appropria

DS670F2 31CS43654.14.2.1 I²C WriteTo write to the device, follow the procedure below while adhering to the control port Switching Specifica-tions in S

32 DS670F2CS43654.14.3 SPI ModeIn SPI Mode, data is clocked into the serial control data line, CDIN, by the serial control port clock, CCLK(see Figure

DS670F2 33CS43655. REGISTER QUICK REFERENCE Addr Function 7 6 5 4 3 2 1 001h Chip Revision PART4 PART3 PART2 PART1 PART0 REV REV REVdefault 0 1 1 0 1

34 DS670F2CS43656. REGISTER DESCRIPTIONNote: All registers are read/write in I²C Mode and write only in SPI, unless otherwise noted.6.1 Chip Revision

DS670F2 35CS43656.2.3 PCM/DSD Selection (DSD/PCM)Default = 00 - PCM1 - DSDFunction:This function selects DSD or PCM Mode. The appropriate data and cl

36 DS670F2CS4365 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

DS670F2 37CS43656.4.2 Direct DSD Conversion (DIR_DSD)Function:When set to 0 (default), DSD input data is sent to the DSD processor for filtering and v

38 DS670F2CS43656.5 Filter Control (address 05h)6.5.1 Interpolation Filter Select (FILT_SEL) Function:When set to 0 (default), the Interpolation Filte

DS670F2 39CS43656.7.2 Channel A Volume = Channel B Volume (Px_A=B) Default = 00 - Disabled1 - EnabledFunction:The AOUTAx and AOUTBx volume levels are

4 DS670F2CS4365LIST OF FIGURESFigure 1.Serial Audio Interface Timing ...

40 DS670F2CS4365Soft Ramp on Zero CrossingSoft Ramp and Zero Cross Enable dictates that signal-level changes, either by attenuation changes ormuting,

DS670F2 41CS43656.8.5 DSD Auto-Mute (DAMUTE) Function:When set to 1 (default), the Digital-to-Analog converter output will mute following the receptio

42 DS670F2CS43656.10 Mixing Control (address 0Ah, 0Dh, 10h, 13h)6.10.1 De-Emphasis Control (PX_DEM1:0)Default = 0000 - Disabled01 - 44.1 kHz10 - 48 kH

DS670F2 43CS43656.11 Volume Control (address 0Bh, 0Ch, 0Eh, 0Fh, 11h, 12h)These six registers provide individual volume and mute control for each of t

44 DS670F2CS43656.12 PCM Clock Mode (address 16h)6.12.1 Master Clock DIVIDE by 2 ENABLE (MCLKDIV) Function:When set to 1, the MCLKDIV bit enables a ci

DS670F2 45CS43657. FILTER PLOTS0.40.50.60.70.80.91−120−100−80−60−40−200Frequency(normalized to Fs)Amplitude (dB)0.40.420.440.460.480.50.520.540.560.58

46 DS670F2CS4365 00.050.10.150.20.250.30.350.40.450.5−0.02−0.015−0.01−0.00500.0050.010.0150.02Frequency(normalized to Fs)Amplitude (dB)0.450.460.470

DS670F2 47CS4365 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.91120100806040200Frequency(normalized to Fs)Amplitude (dB)0.2 0.3 0.4 0.5 0.6 0.7 0.8120100806040200F

48 DS670F2CS4365 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

DS670F2 49CS43658. PARAMETER DEFINITIONSTotal Harmonic Distortion + Noise (THD+N)The ratio of the rms value of the signal to the rms sum of all other

DS670F2 5CS4365LIST OF TABLESTable 1. Single-Speed Mode Standard Frequencies ...

50 DS670F2CS43659. PACKAGE DIMENSIONS INCHES 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

DS670F2 51CS436510.ORDERING INFORMATION11.REFERENCES1. How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Converters, by Steven Harris.

52 DS670F2CS4365Contacting Cirrus Logic SupportFor all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one n

6 DS670F2CS43651. PIN DESCRIPTION Pin Name # Pin DescriptionVD 4Digital Power (Input) - Positive power supply for the digital section. Refer to the Re

DS670F2 7CS4365 VQ 21Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively coupled t

8 DS670F2CS43652. CHARACTERISTICS AND SPECIFICATIONSRECOMMENDED OPERATING CONDITIONSGND = 0 V; all voltages with respect to ground. ABSOLUTE MAXIMUM R

DS670F2 9CS4365DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CQZ)Test Conditions (unless otherwise specified): VA = VLS = VLC = 5 V; VD = 2.5 V; TA = 25°C