wm8569seds-v Wolfson Microelectronics plc, wm8569seds-v Datasheet
wm8569seds-v
Related parts for wm8569seds-v
wm8569seds-v Summary of contents
Page 1
... SNR (‘A’ weighted @ 48kHz) DAC DAC Sampling Frequency: 8kHz – 192kHz 100dB SNR (‘A’ weighted @ 48kHz) ADC ADC Sampling Frequency: 32kHz – 96kHz 16/20/24/32 bit Word Lengths Left, Right Justified or DSP Production Data, June 2006, Rev 4.0 Copyright 2006 Wolfson Microelectronics plc ...
Page 2
WM8569 DESCRIPTION .......................................................................................................1 FEATURES.............................................................................................................1 APPLICATIONS .....................................................................................................1 BLOCK DIAGRAM .................................................................................................1 TABLE OF CONTENTS .........................................................................................2 PIN CONFIGURATION...........................................................................................3 ORDERING INFORMATION ..................................................................................3 PIN DESCRIPTION ................................................................................................4 ABSOLUTE MAXIMUM RATINGS.........................................................................5 RECOMMENDED OPERATING CONDITIONS .....................................................6 ELECTRICAL CHARACTERISTICS ......................................................................6 TERMINOLOGY ............................................................................................................ 7 MASTER CLOCK TIMING ............................................................................................. 8 DIGITAL ...
Page 3
... Production Data PIN CONFIGURATION ORDERING INFORMATION TEMPERATURE DEVICE RANGE o WM8569SEDS/V - WM8569SEDS/RV -25 to +85 C Note: Reel quantity = 2,000 w MOISTURE PACKAGE SENSITIVITY LEVEL 28-lead SSOP MSL3 (Pb-free) 28-lead SSOP MSL3 (Pb-free, tape and reel) WM8569 PEAK SOLDERING TEMPERATURE o 260 C o 260 C PD Rev 4 ...
Page 4
WM8569 PIN DESCRIPTION PIN NAME 1 DACMCLK 2 ADCBCLK 3 DACBLCK Digital Input/Output 4 ADCLRC Digital Input/Output 5 DACLRC Digital Input/Output 6 DVDD 7 DGND 8 DIN DOUT 11 CSB/IDF 12 SCLK/IWL 13 SDIN/DM 14 MUTE Digital ...
Page 5
Production Data ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are stress ratings only. Permanent damage to the device may be caused by continuously operating at or beyond these limits. Device functional operating limits and guaranteed performance specifications are given under Electrical ...
Page 6
WM8569 RECOMMENDED OPERATING CONDITIONS PARAMETER Digital supply range Analogue supply range AVDD, VREFP Ground AGND, VREFN, DGND Difference DGND to AGND Note: Digital supply DVDD must never be more than 0.3V greater than AVDD. ELECTRICAL CHARACTERISTICS Test Conditions AVDD, VREFP ...
Page 7
Production Data Test Conditions AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, DGND = 0V, T PARAMETER Mute Attenuation Power Supply Rejection Ratio Digital Logic Levels (CMOS Levels) Input LOW level Input HIGH level Input leakage current ...
Page 8
WM8569 MASTER CLOCK TIMING MCLK Figure 1 ADC and DAC Master Clock Timing Requirements Test Conditions AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN = 0V, AGND, DGND = 0V, T ADCMCLK = 256fs unless otherwise stated. PARAMETER System ...
Page 9
Production Data DACBCLK/ ADCBCLK (Output) DACLRC/ ADCLRC (Output) DOUT DIN Figure 3 Digital Audio Data Timing – Master Mode Test Conditions AVDD, VREFP = 5V, DVDD = 3.3V, AGND, VREFN, DGND = 0V, T otherwise stated. PARAMETER SYMBOL Audio Data ...
Page 10
WM8569 DIGITAL AUDIO INTERFACE – SLAVE MODE Figure 4 Audio Interface – Slave Mode Figure 5 Digital Audio Data Timing – Slave Mode w Production Data PD Rev 4.0 June 2006 10 ...
Page 11
Production Data Test Conditions AVDD = 5V, DVDD = 3.3V, AGND = 0V, DGND = 0V, T unless otherwise stated. PARAMETER SYMBOL Audio Data Input Timing Information ADCBCLK/DACBCLK cycle t BCY time ADCBCLK/DACBCLK pulse t BCH width high ADCBCLK/DACBCLK pulse ...
Page 12
WM8569 MPU INTERFACE TIMING Figure 6 SPI Compatible Control Interface Input Timing Test Conditions AVDD = 5V, DVDD = 3.3V, AGND, DGND = 0V, T stated PARAMETER SCLK/IWL rising edge to CSB/IDF rising edge SCLK/IWL pulse cycle time SCLK/IWL pulse ...
Page 13
Production Data INTERNAL POWER ON RESET CIRCUIT Figure 7 Internal Power on Reset Circuit Schematic The WM8569 includes an internal Power-On-Reset Circuit, as shown in Figure 7, which is used reset the digital logic into a default state after power ...
Page 14
WM8569 DEVICE DESCRIPTION INTRODUCTION WM8569 is a complete 2-channel audio codec, including digital interpolation and decimation filters, multi-bit sigma delta stereo ADC, and switched capacitor multi-bit sigma delta DAC with volume control and output smoothing filter. The device is implemented ...
Page 15
Production Data SAMPLING RATE (DACLRC/ ADCLRC) 32kHz 44.1kHz 48kHz 96kHz 192kHz Table 6 System Clock Frequencies Versus Sampling Rate HARDWARE CONTROL MODES When the MODE pin is held high, the following hardware modes of operation are available. Note: When in ...
Page 16
WM8569 The MUTE pin is an input to select mute or not mute. MUTE is active high; taking the pin high causes the filters to soft mute, ramping down the audio signal over a few milliseconds. Taking MUTE low again ...
Page 17
Production Data DIGITAL AUDIO INTERFACE MASTER AND SLAVE MODES The audio interface operates in either Slave or Master mode, selectable using the DACMS and ADCMS control bits. In both Master and Slave modes DIN is always an input to the ...
Page 18
WM8569 AUDIO INTERFACE FORMATS Audio data is applied to the internal DAC filters or output from the ADC filters, via the Digital Audio Interface. 5 popular interface formats are supported: Left Justified mode Right Justified mode mode ...
Page 19
Production Data RIGHT JUSTIFIED MODE In right justified mode, the LSB of DIN is sampled by the WM8569 on the rising edge of DACBCLK preceding a DACLRC transition. The LSB of the ADC data is output on DOUT and changes ...
Page 20
WM8569 The MSB of the left channel ADC data is output on DOUT and changes on the first falling edge of ADCBCLK following a low to high ADCLRC transition and may be sampled on the rising edge of ADCBCLK. The ...
Page 21
Production Data POWERDOWN MODES The WM8569 has powerdown control bits allowing specific parts of the WM8569 to be powered off when not being used. Control bit ADCPD powers off the ADC. The three stereo DACs each have a separate powerdown ...
Page 22
WM8569 REGISTER MAP The complete register map is shown below. The detailed description can be found in the relevant text of the device description. The WM8569 can be configured using the Control Interface. All unused bits should be set to ...
Page 23
Production Data CONTROL INTERFACE REGISTERS ATTENUATOR CONTROL MODE Setting the ATC register bit causes the left channel attenuation settings to be applied to both the left and right channel of the DAC from the next audio input sample. No update ...
Page 24
WM8569 DAC DIGITAL AUDIO INTERFACE CONTROL REGISTER Interface format is selected via the DACFMT[1:0] register bits: REGISTER ADDRESS Interface Control In left justified, right justified this bit is set high, the expected polarity of DACLRC will be ...
Page 25
Production Data DAC OUTPUT PHASE The DAC Phase control word determines whether the output of the DAC is non-inverted or inverted REGISTER ADDRESS DAC Phase DIGITAL ZERO CROSS-DETECT The Digital volume control also incorporates a zero cross detect circuit which ...
Page 26
WM8569 POWERDOWN MODE AND ADC/DAC DISABLE The ADC and DAC may be powered down individually by setting the ADCPD and DACPD disable bits. Setting ADCPD will disable the ADC and select a low power mode. The ADC digital filters will ...
Page 27
Production Data ADC DIGITAL AUDIO INTERFACE CONTROL REGISTER Interface format is selected via the ADCFMT[1:0] register bits: REGISTER ADDRESS Interface Control The ADCIWL[1:0] bits are used to control the input word length. REGISTER ADDRESS Interface Control Note: 32-bit right justified ...
Page 28
WM8569 ADC HIGHPASS FILTER DISABLE The ADC digital filters contain a digital highpass filter. This defaults to enabled and can be disabled using software control bit ADCHPD. REGISTER ADDRESS ADC Control In left justified, right justified this ...
Page 29
Production Data DAC DIGITAL VOLUME CONTROL The DAC volume may also be adjusted in the digital domain using independent digital attenuation control registers REGISTER BIT LABEL ADDRESS 7:0 0000000 LDA[7:0] Digital Attenuation 8 UPDATE DACL 0000001 7:0 RDA[6:0] Digital Attenuation ...
Page 30
WM8569 DIGITAL FILTER CHARACTERISTICS PARAMETER Passband Passband ripple Stopband Stopband Attenuation Passband Passband ripple Stopband Stopband Attenuation Table 11 Digital Filter Characteristics DAC FILTER RESPONSES 0 -20 -40 -60 -80 -100 -120 0 0.5 1 1.5 Frequency (Fs) Figure 21 ...
Page 31
Production Data ADC FILTER RESPONSES 0 -20 -40 -60 -80 0 0.5 1 1.5 Frequency (Fs) Figure 25 ADC Digital Filter Frequency Response ADC HIGH PASS FILTER The WM8569 has a selectable digital high pass filter to remove DC offsets. ...
Page 32
WM8569 - Frequency (kHz) Figure 29 De-Emphasis Frequency Response (44.1kHz - Frequency (kHz) Figure 31 De-Emphasis Frequency Response (48kHz) w 0.4 0.3 0.2 0.1 ...
Page 33
Production Data APPLICATIONS INFORMATION RECOMMENDED EXTERNAL COMPONENTS Figure 33 Recommended External Components Diagram RECOMMENDED EXTERNAL COMPONENTS VALUES COMPONENT SUGGESTED REFERENCE VALUE C1 and 0 and and C10 0.1 ...
Page 34
WM8569 SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS It is recommended that a lowpass filter be applied to the output from each DAC channel for Hi Fi applications. Typically a second order filter is suitable and provides sufficient attenuation of ...
Page 35
Production Data PACKAGE DIMENSIONS DS: 28 PIN SSOP (10.2 x 5.3 x 1.75 mm Dimensions Symbols (mm) MIN NOM A ----- ----- A 0.05 ----- 1 A 1.65 1. 0.22 0.30 ...
Page 36
... WM8569 IMPORTANT NOTICE Wolfson Microelectronics plc (“Wolfson”) products and services are sold subject to Wolfson’s terms and conditions of sale, delivery and payment supplied at the time of order acknowledgement. Wolfson warrants performance of its products to the specifications in effect at the date of shipment. Wolfson reserves the right to make changes to its products and specifications or to discontinue any product or service without notice ...