CS4385-CQZ Cirrus Logic Inc, CS4385-CQZ Datasheet
CS4385-CQZ
Specifications of CS4385-CQZ
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CS4385-CQZ Summary of contents
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Features Advanced Multi-bit Delta Sigma Architecture 24-bit Conversion Automatic Detection of Sample Rates up to 192 kHz 114 dB Dynamic Range -100 dB THD+N Direct Stream Digital Mode – Non-Decimating Volume Control – On-Chip 50 kHz ...
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TABLE OF CONTENTS 1. PIN DESCRIPTION ................................................................................................................................ 6 2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 8 RECOMMENDED OPERATING CONDITIONS ..................................................................................... 8 ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 8 DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CQZ) ............................................................. 9 DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DQZ) ............................................................ 10 ...
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PCM/DSD Selection (DSD/PCM) .......................................................................................... 35 6.2.4 DAC Pair Disable (DACx_DIS) .............................................................................................. 35 6.2.5 Power Down (PDN) ............................................................................................................... 35 6.3 PCM Control (address 03h) ............................................................................................................ 35 6.3.1 Digital Interface Format (DIF) ................................................................................................ 35 6.3.2 Functional Mode (FM) ........................................................................................................... 36 6.4 ...
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LIST OF FIGURES Figure 1.Serial Audio Interface Timing ...................................................................................................... 15 Figure 2.Direct Stream Digital - Serial Audio Input Timing ........................................................................ 16 Figure 3.Direct Stream Digital - Serial Audio Input Timing for Phase Modulation Mode ........................... 16 Figure 4.Control Port Timing ...
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LIST OF TABLES Table 1. Single-Speed Mode Standard Frequencies ................................................................................ 21 Table 2. Double-Speed Mode Standard Frequencies ............................................................................... 21 Table 3. Quad-Speed Mode Standard Frequencies ................................................................................. 21 Table 4. PCM Digital Interface Format, Hardware Mode Options ............................................................. 22 Table 5. ...
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PIN DESCRIPTION Pin Name # Digital Power (Input) - Positive power supply for the digital section. Refer to the Recom mended Operating Conditions for appropriate voltages. GND 5, 31 Ground (Input) - Ground reference. Should be connected ...
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Pin Name # Quiescent Voltage (Output) - Filter connection for internal quiescent voltage. VQ must be capacitively coupled to analog ground, as shown in the Typical Connection Diagram. The nom- inal voltage level is specified in the Analog Characteristics and ...
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CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS GND = 0 V; all voltages with respect to ground. Parameters DC Power Supply Ambient Operating Temperature (Power Applied) ABSOLUTE MAXIMUM RATINGS GND = 0 V; all voltages with respect to ground. Parameters ...
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DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CQZ) Test Conditions (unless otherwise specified VLS = VLC = 2 input sine wave ; Tested under max ac-load resistance (Note 1) “Typical Connection Diagram” on page ...
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DAC ANALOG CHARACTERISTICS - AUTOMOTIVE (-DQZ) Test Conditions (unless otherwise specified 4.75 to 5.25 V; VLS = 1.71 to 5.25 V; VLC = 1. 2. -40°C to 85°C; ...
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POWER AND THERMAL CHARACTERISTICS Parameters Power Supplies Power Supply Current (Note 4) (Note 5) (Note 6) Power Dissipation (Note 4) Package Thermal Resistance Power Supply Rejection Ratio (Note 7) Notes: 4. Current consumption increases with increasing Fs within a given ...
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COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE The filter characteristics have been normalized to the sample rate (Fs) and can be referenced to the desired sam- ple rate by multiplying the given characteristic by Fs. See Parameter Combined Digital and ...
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COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE (CONTINUED) Parameter Single-Speed Mode - 48 kHz Passband (Note 9) Frequency Response StopBand StopBand Attenuation Group Delay De-emphasis Error (Note 11) (Relative to 1 kHz) Double-Speed Mode - 96 kHz Passband (Note 9) ...
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DIGITAL CHARACTERISTICS Parameters Input Leakage Current Input Capacitance High-Level Input Voltage Low-Level Input Voltage Low-Level Output Voltage (I = -1.2 mA) OL Low-Level Output Voltage (I = -1.2 mA) Control I/O = 1 MUTEC auto detect ...
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SWITCHING CHARACTERISTICS - PCM Inputs: Logic 0 = GND, Logic 1 = VLS, C Parameters RST pin Low Pulse Width MCLK Frequency MCLK Duty Cycle Input Sample Rate - LRCK (Manual selection) Input Sample Rate - LRCK (Auto detect) LRCK ...
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SWITCHING CHARACTERISTICS - DSD Logic 0 = GND; Logic 1 = VLS Parameter MCLK Duty Cycle DSD_SCLK Pulse Width Low DSD_SCLK Pulse Width High DSD_SCLK Frequency DSD_A / _B valid to DSD_SCLK rising setup time DSD_SCLK rising to ...
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SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT Inputs: Logic 0 = GND, Logic 1 = VLC, C Parameter SCL Clock Frequency RST Rising Edge to Start Bus Free Time Between Transmissions Start Condition Hold Time (prior to first clock ...
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SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT Inputs: Logic 0 = GND, Logic 1 = VLC, C Parameter CCLK Clock Frequency RST Rising Edge to CS Falling CCLK Edge to CS Falling CS High Time Between Transmissions CS Falling ...
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TYPICAL CONNECTION DIAGRAM +2.5 V PCM Digital Audio Source +1 DSD Audio Source Micro- Controller +1 Note*: Necessary for I control port operation Figure 6. Typical Connection Diagram, Software Mode DS670F2 ...
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V 220 Ω PCM Digital Audio Source 470 Ω +1 470 Ω DSD Audio Source Stand-Alone Mode Configuration +1 Figure 7. Typical Connection Diagram, Hardware Mode µF 0.1 ...
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APPLICATIONS The CS4365 serially accepts two’s complement formatted PCM data at standard audio sample rates including 48, 44.1 and 32 kHz in SSM, 96, 88.2 and 64 kHz in DSM, and 192, 176.4 and 128 kHz in QSM. Audio ...
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Mode Select In Hardware Mode, operation is determined by the Mode Select pins. The states of these pins are continu- ally scanned for any changes; however, the mode should only be changed while the device is in reset (RST ...
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Digital Interface Formats The serial port operates as a slave and supports the I²S, Left-Justified, Right-Justified, and One-Line Mode (OLM) digital interface formats with varying bit depths from 16 to 32, as shown in clocked into the DAC on ...
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LRCK SCLK SDINx Figure 13. Format 5 - Right-Justified 18-bit Data 4.3.1 OLM #1 OLM #1 serial audio interface format operates in Single-, Double-, or Quad-Speed Mode and will slave ...
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Interpolation Filter To accommodate the increasingly complex requirements of digital audio systems, the CS4365 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 ...
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ATAPI Specification The CS4365 implements the channel-mixing functions of the ATAPI CD-ROM specification. The ATAPI functions are applied per A-B pair. Refer to tion. Left Chan nel Audio D ata SDINx Right Chan nel Audio D ata Figure 17. ...
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DSD Normal Mode Not Used BCKA DSD_SCLK (64Fs) D0 Not Used DSDAx, D0 DSDBx Figure 18. DSD Phase Modulation Mode Diagram 4.9 Grounding and Power Supply Arrangements As with any high-resolution converter, the CS4365 requires careful attention to power supply ...
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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 CS4365 evalua- tion board, CDB4365, as seen in ...
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The MUTEC Outputs The MUTEC1-6 pins have an auto-polarity detect feature. The MUTEC output pins are high impedance at the time of reset. The external mute circuitry needs to be self-biased into an active state in order to be ...
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Software Mode 1. Hold RST low until the power supply is stable, and the master and left/right clocks are locked to the appropriate frequencies, as discussed in settings, FILT+ will remain low, and VQ will be connected to VA/2. ...
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I²C Write To write to the device, follow the procedure below while adhering to the control port Switching Specifica- tions in Section . 1. Initiate a START condition to the I²C bus followed by the address byte. The upper ...
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SPI Mode In SPI Mode, data is clocked into the serial control data line, CDIN, by the serial control port clock, CCLK (see Figure 23 for the clock to data relationship). There is no AD0 pin. Pin CS is ...
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REGISTER QUICK REFERENCE Addr Function 7 01h Chip Revision PART4 default 0 02h Mode Control CPEN default 0 03h PCM Control DIF3 default 0 04h DSD Control DSD_DIF2 DSD_DIF1 DSD_DIF0 DIR_DSD STATIC_D default 0 05h Filter Control Reserved default ...
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REGISTER DESCRIPTION Note: All registers are read/write in I²C Mode and write only in SPI, unless otherwise noted. 6.1 Chip Revision (address 01h PART4 PART3 PART2 0 1 6.1.1 Part Number ID (PART) [Read Only] 01101- CS4365 ...
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PCM/DSD Selection (DSD/PCM) Default = PCM 1 - DSD Function: This function selects DSD or PCM Mode. The appropriate data and clocks should be present before changing modes, or else MUTE should be selected. 6.2.4 DAC ...
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DIF3 DIF2 DIF1 6.3.2 Functional Mode (FM) Default = Single-Speed ...
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Direct DSD Conversion (DIR_DSD) Function: When set to 0 (default), DSD input data is sent to the DSD processor for filtering and volume control func- tions. When set to 1, DSD input data is sent directly to the switched ...
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Filter Control (address 05h Reserved Reserved Reserved 0 0 6.5.1 Interpolation Filter Select (FILT_SEL) Function: When set to 0 (default), the Interpolation Filter has a fast roll-off. When set to 1, the Interpolation Filter has a slow ...
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Channel A Volume = Channel B Volume (Px_A=B) Default = Disabled 1 - Enabled Function: The AOUTAx and AOUTBx volume levels are independently controlled by the A and the B Channel Vol- ume Control Bytes when ...
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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 ...
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DSD Auto-Mute (DAMUTE) Function: When set to 1 (default), the Digital-to-Analog converter output will mute following the reception of 256 re- peated 8-bit DSD mute patterns (as defined in the SACD specification). A single bit not fitting the repeated ...
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Mixing Control (address 0Ah, 0Dh, 10h, 13h Reserved Px_DEM1 Px_DEM0 0 0 6.10.1 De-Emphasis Control (PX_DEM1:0) Default = Disabled 01 - 44.1 kHz kHz kHz Function: Selects the ...
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ATAPI4 ATAPI3 ATAPI2 6.11 Volume Control (address 0Bh, 0Ch, 0Eh, 0Fh, 11h, 12h) 7 ...
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PCM Clock Mode (address 16h Reserved Reserved MCLKDIV 0 0 6.12.1 Master Clock DIVIDE by 2 ENABLE (MCLKDIV) Function: When set to 1, the MCLKDIV bit enables a circuit which divides the externally applied MCLK signal by ...
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FILTER PLOTS 0 −20 −40 −60 −80 −100 −120 0.4 0.5 0.6 0.7 Frequency(normalized to Fs) Figure 24. Single-Speed (fast) Stopband Rejection 0 −1 −2 −3 −4 −5 −6 −7 −8 −9 −10 0.45 0.46 0.47 0.48 0.49 0.5 ...
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Frequency(normalized to Fs) Figure 30. Single-Speed (slow) Transition Band (detail 100 120 0.4 0.5 0.6 0.7 Frequency(normalized ...
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Frequency(normalized to Fs) Figure 36. Double-Speed (slow) Stopband Rejection 0.45 0.46 0.47 0.48 0.49 0.5 0.51 Frequency(normalized ...
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Frequency(normalized to Fs) Figure 42. Quad-Speed (fast) Transition Band (detail 100 120 0.1 0.2 0.3 0.4 0.5 ...
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PARAMETER DEFINITIONS Total Harmonic Distortion + Noise (THD+N) The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified bandwidth (typically kHz), including distortion components. ...
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PACKAGE DIMENSIONS 48L LQFP PACKAGE DRAWING D D1 DIM MIN A --- A1 0.002 B 0.007 D 0.343 D1 0.272 E 0.343 E1 0.272 e* 0.016 L 0.018 µ 0.000° ∝ L INCHES ...
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INFORMATION Product Description 114 dB, 192 kHz 6-chan- CS4365 nel D/A Converter CDB4365 CS4365 Evaluation Board 11.REFERENCES 1. How to Achieve Optimum Performance from Delta-Sigma A/D & D/A Converters, by Steven Harris. Paper presented at the 93rd Convention of ...
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Contacting Cirrus Logic Support For all product questions and inquiries, contact a Cirrus Logic Sales Representative. To find the one nearest to you IMPORTANT NOTICE Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe that the information contained in ...