w WM8711BL-6061-FL24-M-REV1 Example Configurations DOC TYPE: EXAMPLE CONFIGURATIONS BOARD REFERENCE: WM8711BL-6061-FL24-M-Rev1 BOARD TYPE: Customer Mini Board WOLFSON DEVICE(S): WM8711BL DATE: March 2008 DOC REVISION: 1.0 INTRODUCTION The WM8711BL-6061-FL24-M mini-board is compatible with the 6061-EV1 customer evaluation board and together provide a complete hardware platform for evaluation of the WM8711BL. The WM8711BL mini-board can also be used independently and connected directly to a processor board using flying wires or appropriate headers. This document will cover both, but performance data will be based on the Wolfson system with 6061-EV1 main board. Configurations covered are listed below: • DAC Playback to 32Ω Headphone on L/RHPOUT • Analogue bypass (LINE in to LINE out) This document should be used as a starting point for evaluation of WM8711BL. It will not cover every possible usage mode. Assumptions: 1. The user is familiar with the 6061-EV1 main board and that the board is configured correctly for the path of interest (see related documents below) 2. The user has setup WISCE as per instruction and has control of the DUT (register settings provided in this document) Related documents: 1. WM8711BL-6061-FL24-M-REV1_Schematic_Layout.pdf 2. 6061-EV1_Schematic_Layout.pdf 3. WISCE Quick Start Guide.pdf WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews/ March 2008, Rev 1.0 Copyright ©2008 Wolfson Microelectronics plc WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information TABLE OF CONTENTS INTRODUCTION............................................................................................................. 1 TABLE OF CONTENTS.................................................................................................. 2 BOARD CONFIGURATION STAND-ALONE ................................................................. 3 BOARD CONFIGURATION WITH 6061-EV1 MAIN BOARD......................................... 5 DAC PLAYBACK TO 32Ω HEADPHONE ON L/RHPOUT ........................................................5 ANALOGUE BYPASS (LINE IN TO LINE OUT) ........................................................................7 APPLICATION SUPPORT.............................................................................................. 9 IMPORTANT NOTICE .................................................................................................. 10 ADDRESS: ................................................................................................................... 10 w March 2008, Rev 1.0 2 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information BOARD CONFIGURATION STAND-ALONE The WM8711BL mini board can be used a stand-alone module for direct connection to a processor board via flying leads or dedicated headers. This section will detail important considerations and provide all information required to do this without risking damage to the DAC. CONNECTION DIAGRAM Figure 1 shows the connections required to power-up and control the WM8711BL mini board. Connections can be made through flying leads or with 2.54mm pitch headers compatible with those on the mini board. Additionally, MICIN can be configured to use the onboard silicon microphone, and the headphone Jack socket provides an AC-coupled headphone output. Please refer to table 1 for further details on external I/O connections. Control IF Analogue Inputs Crystal / Master CLK Input XTI/MCLK DCVDD 1.42-3.6V DCVDD DBVDD 1.8-3.6V Core CLK Output DBVDD CLKOUT BCLK AVDD ROUT LOUT AVDD 1.8-3.6V L/R HPOUT AC coupled Audio IF HPVDD 1.8V-3.6V Analogue Outputs Figure 1 WM8711BL Mini Board Connection Diagram w March 2008, Rev 1.0 3 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information I/O Table SIGNAL BOARD REFERENCE IMPORTANT NOTES Voltage Supplies AVDD H3: pin 16 AVDD=1.8V to 3.6V HPVDD H2: pin 10 HPVDD=1.8V to 3.6V DCVDD H1: pin 3 DCVDD=1.42V to 3.6V DBVDD H1: pin 5 DBVDD=1.8V to 3.6V AGND / HPGND / DGND Common GND: H1: pin 4 H3: pin 13 H3: pin 17 Analogue and digital grounds must always be within 0.3V of each other H4: pin 21 2-wire (default): MODE to GND via R8 Controlled via SP2 3-wire: MODE to DBVDD via SP2 Control Interface MODE CSB H4: pin 22 2-wire address 0x34h (default): CSB to GND via R7 Controlled via SP1 2-wire address 0x36h: CSB to DBVDD via SP1 SDIN H4: pin 23 SCLK H4: pin 24 All control interface signals should swing between DGND and DBVDD Crystal / Master Clock XTI/MCLK H1: pin 1 Signal should swing between DGND and DBVDD CLKOUT H1: pin 6 Buffered Core CLK or Core CLK/2 Audio Interface BCLK H1: pin 7 DACDAT H2: pin 8 DACLRC H2: pin 9 All audio interface signals should swing between DGND and DBVDD Analogue Inputs LLINEIN H4: pin 20 Full scale swing should not exceed AVDD/3.3 Vrms RLINEIN H4: pin 19 Full scale swing should not exceed AVDD/3.3 Vrms LOUT H3: pin 14 Line output (left channel) ROUT H3: pin 15 Line output (right channel) LHPOUT H2: pin 11 HP output (left channel) or left channel of AC coupled HP output (J1) RHPOUT H2: pin 12 HP output (right channel) or right channel of AC coupled HP output (J1) Analogue Outputs Table 1 I/O Configuration w March 2008, Rev 1.0 4 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information BOARD CONFIGURATION WITH 6061-EV1 MAIN BOARD This section focuses on evaluation of the WM8711BL mini board in combination with the 6061-EV1 main board. This system is the reference platform for measurement data contained in this document. Please note that only a limited number of usage modes will be covered. DAC PLAYBACK TO 32Ω HEADPHONE ON L/RHPOUT The following section details board configuration for stereo DAC playback to 32Ω headphone on L/RHPOUT. It should be noted that L/RHPOUT outputs are routed to headphone jack sockets on the WM8711BL mini-board and 6061-EV1 main-board, and also to phono connectors on the main-board. For the purpose of this test the main-board phono connectors were used with 32Ω loads applied. AGND VMID AVDD SCLK MODE DGND DBVDD (3.3V) DCVDD (1.5V) CLKOUT XTI/MCLK XTO DIGTAL AUDIO INTERFACE CSB SDIN EVALUATION BOARD SETUP BOARD CONFIGURATION USB HP L/R Digital Data In S/PDIF w March 2008, Rev 1.0 5 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information ` REGISTER SETTINGS Register settings provided below are simply the minimum requirement to configure the desired path and have not in any way been optimised for pops and clicks. REG INDEX DATA VALUE R15 0x000 RESET R2 0x079 Left Headphone Out: LRHPBOTH=0, LZCEN=0, LHPVOL=111_1001 R3 0x079 Right Headphone Out: RLHPBOTH=0, RZCEN=0, RHPVOL=111_1001 R4 0x010 Analogue Audio Path Control: SIDEATT=00, SIDETONE=0, DACSEL=1, BYPASS=0, INSEL=0, MUTEMIC=0, MICBOOST=0 R5 0x000 Digital Audio Path Control: HPOR=0, DACMU=0, DEEMPH=00, ADCHPD=0 R6 0x007 Power Down Control: POWEROFF=0, CLKOUTPD=0, OSCPD=0, OUTPD=0, DACPD=0, ADCPD=1, MICPD=1, LINEINPD=1 R7 0x00A Digital Audio Interface Format: BCLKINV=0, MS=0, LRSWAP=0, LRP=0, IWL=10, FORMAT=10 R8 0x000 Sampling Control: CLKODIV2=0, CLKIDIV2=0, SR=0000, BOSR=0, USB/NORMAL=0 R9 0x001 Active Control: Active=1 COMMENT THD+N V AMPLITUDE PERFORMANCE CURVE Audio Precision WM8711BL-6061-FL24-M-REV1 DAC Signal Path (to HP_Out) THD+N v Amplitude Signal = 997kHz; 24-bit I2S; 256fs (fs=48kHz); Slave Mode -35 -40 -45 -50 -55 -60 d B r A -65 -70 -75 -80 -85 -90 -95 -100 -105 -110 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 +0 dBFS Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 2 Red Blue Solid Solid 2 2 Anlr.THD+N Ampl Anlr.THD+N Ampl Left Left HPL HPR System AP2 Board Revision: 1.0 Device Date Code: WM8711B 69ABBD6 Input Path: SPDIF_IN Input Signal: 997Hz; 0dBFS; 24-bit; 256fs (fs=48kHz) Output Path: HPL/R (32R Load) Output Reference: 0dBrA = -0.195 dBV Supplies: AVDD=DBVDD=DCVDD=HPVDD=+3.3V BW filter : As stated Additional Filtering: A-weight Dither: None RMS or Averaging: Averaging DAC_THD+NvAmp_HP_32R.at27 w March 2008, Rev 1.0 6 Customer Information WM8711BL-6061-FL24-M-REV1 Evaluation Board ANALOGUE BYPASS (LINE IN TO LINE OUT) The following section details board configuration for analogue bypass (Line In to Line Out) from L/RLINEIN to L/ROUT via the output mixers. Note: In this case both L/RLINEIN inputs and L/ROUT outputs located on the 6061-EV1 main board were used. EVALUATION BOARD SETUP BOARD CONFIGURATION L/R LINE IN USB w L/R LINE OUT March 2008, Rev 1.0 7 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information REGISTER SETTINGS Register settings provided below are simply the minimum requirement to configure the desired path and have not in any way been optimised for pops and clicks. REG INDEX DATA VALUE R15 0x000 RESET R4 0x00A Analogue Audio Path Control: SIDEATT=00, SIDETONE=0, DACSEL=0, BYPASS=1, INSEL=0, MUTEMIC=1, MICBOOST=0 R6 0x00E Power Down Control: POWEROFF=0, CLKOUTPD=0, OSCPD=0, OUTPD=0, DACPD=1, ADCPD=1, MICPD=1, LINEINPD=0 R9 0x001 Active Control: Active=1 COMMENT THD+N V AMPLITUDE PERFORMANCE CURVE WM8711BL-6061-FL24-M-REV1 -- Analogue BypassTHD+N v Amplitude (L/RIN1, L/ROUT1) 03/05/08 11:06:52 -30 -40 -50 d B r -60 A -80 -70 -90 -100 -110 -90 -85 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 +0 +5 dBV Sweep Trace Color Line Style Thick Data Axis Comment 1 1 1 2 Red Blue Solid Solid 2 2 Anlr.THD+N Ampl Anlr.THD+N Ampl Left Left LINEOUTL LINEOUTR System = AP2 Board Revision: 2.0 Device Datecode: WM8711B 69ABBD6 Input Signal: 997Hz; 0dBV; Reference Levels: 0dBrA = -7.49dBV Supplies: AVDD=HPVDD=DCVDD=DBVDD = +3.3V Input Signal Path: L/R IN Output Signal Path: L/R OUT BW Filtering: As stated Additional Filtering Type: A-weight Dither = Off RMS or Averaging = Average THD+N_vs_Amplitude_LRINPUT1_to_LROUT1_Bypass.at27 w March 2008, Rev 1.0 8 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information APPLICATION SUPPORT If you require more information or require technical support, please contact the Wolfson Microelectronics Applications group through the following channels: Email: Telephone Apps: Fax: Mail: [email protected] +44 (0) 131 272 7070 +44 (0) 131 272 7001 Applications Engineering at the address on the last page or contact your local Wolfson representative. Additional information may be made available on our web site at: http://www.wolfsonmicro.com w March 2008, Rev 1.0 9 WM8711BL-6061-FL24-M-REV1 Evaluation Board Customer Information 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. Customers should therefore obtain the latest version of relevant information from Wolfson to verify that the information is current. Testing and other quality control techniques are utilised to the extent Wolfson deems necessary to support its warranty. Specific testing of all parameters of each device is not necessarily performed unless required by law or regulation. In order to minimise risks associated with customer applications, the customer must use adequate design and operating safeguards to minimise inherent or procedural hazards. Wolfson is not liable for applications assistance or customer product design. The customer is solely responsible for its selection and use of Wolfson products. Wolfson is not liable for such selection or use nor for use of any circuitry other than circuitry entirely embodied in a Wolfson product. Wolfson’s products are not intended for use in life support systems, appliances, nuclear systems or systems where malfunction can reasonably be expected to result in personal injury, death or severe property or environmental damage. Any use of products by the customer for such purposes is at the customer’s own risk. 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Any representations made, warranties given, and/or liabilities accepted by any person which differ from those contained in this datasheet or in Wolfson’s standard terms and conditions of sale, delivery and payment are made, given and/or accepted at that person’s own risk. Wolfson is not liable for any such representations, warranties or liabilities or for any reliance placed thereon by any person. ADDRESS: Wolfson Microelectronics plc Westfield House 26 Westfield Road Edinburgh EH11 2QB United Kingdom Tel :: +44 (0)131 272 7000 Fax :: +44 (0)131 272 7001 Email :: [email protected] w March 2008, Rev 1.0 10