WM8750-EV1M Wolfson Microelectronics, WM8750-EV1M Datasheet
WM8750-EV1M
Related parts for WM8750-EV1M
WM8750-EV1M Summary of contents
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... WM8750-EV1M Evaluation Board User Handbook Rev 2.0 ...
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... WM8750-EV1M TABLE OF CONTENTS .................................................................................. 2 INTRODUCTION ............................................................................................. 4 GETTING STARTED ....................................................................................... 4 EVALUATION BOARD CHECKLIST ...................................................................... 4 CUSTOMER REQUIREMENTS.............................................................................. 4 POWER SUPPLIES ............................................................................................... 5 BOARD FUNCTIONALITY ..................................................................................... 5 BOARD INPUT ....................................................................................................... 6 BOARD OUTPUT ................................................................................................... 6 INTERFACES......................................................................................................... 7 HEADERS .............................................................................................................. 7 LINKS, JUMPERS AND SWITCHES ...................................................................... 9 WM8750 OPERATION .................................................................................. 10 SOFTWARE CONTROL....................................................................................... 10 SERIAL INTERFACE SOFTWARE DESCRIPTION...................................... 13 SOFTWARE DOWNLOAD ................................................................................... 13 SOFTWARE INSTALLATION............................................................................... 13 SOFTWARE OPERATION ................................................................................... 13 POWER DOWN AND INTERFACE CONTROL.................................................... 19 DAC AND ADC CONTROL ...
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... EVALUATION SUPPORT ............................................................................. 47 IMPORTANT NOTICE ................................................................................... 48 ADDRESS: ........................................................................................................... 48 w WM8750-EV1M Rev 2.0, February 2005 3 ...
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... ADC Signal Path Requires: Analogue Signal Path Requires: w WM8750-EV1B Evaluation Board - 6097_QFN32_EV1_REV1 WM8750-EV1S Control Software (download from http://www.wolfsonmicro.com) WM8750-EV1M User Handbook (download from http://www.wolfsonmicro.com) D.C. Power supply of +5V D.C. Power supply of +1.8V to +3.6V PC and printer cable (for software control) Win95/98/NT/2000/XP 486 Processor Approximately 1 ...
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... J15, J17 and J21) running up each side of the device. Level-shift IC (U4) is used to shift the fixed +5V digital input from the CS8427 (U5) down to the same level as DBVDD and vice-versa. w SOCKET NAME J8 +5V J2 DBVDD J4 AVDD DCVDD HPVDD J1 DGND J5 AGND WM8750-EV1M SUPPLY +5V +1.8V to +3.6V +1.8V to +3.6V +1.42V to +3.6V +1.8V to +3. Rev 2.0, February 2005 5 ...
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... WM8750-EV1M BOARD INPUT REF-DES J19 Table 2 Digital Inputs REF-DES J12 J14 J22 J26 J45 J16 J30 Analogue signals applied to these connectors are AC coupled before being input to the WM8750. Table 3 Analogue Inputs Note: When used in Master Mode, an SPDIF signal must still be applied to phono connector J19 ...
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... INTERFACES Figure 1 Interfaces HEADERS H1 SIGNAL 1/2 MCLK 3/4 GND 5/6 DACDAT 7/8 GND 9/10 DACLRC 11/12 GND 13/14 BCLK 15/16 GND J24 SIGNAL 1 ADCLRC_IN 2 GND w WM8750-EV1M H2 SIGNAL 12/11 GND 10/9 ADCDAT 8/7 GND 6/5 ADCLRC 4/3 GND 2/1 BCLK J31 SIGNAL 1 DACLRC_OUT 2 GND Rev 2.0, February 2005 7 ...
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... WM8750-EV1M J15 WM8750 J21 WM8750 Table 6 Headers w PIN NAME J17 MCLK 1 DCVDD 2 DBVDD 3 DGND 4 BCLK 5 DACDAT 6 DACLRC 7 ADCDAT 8 PIN NAME J13 ADCLRC 1 MONOOUT 2 OUT3 3 ROUT1 ...
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... HP Output Select (3.5mm Jack Socket) Pins 2 and 3 SHORT Line Output Select (Phono Socket) Pins 1 and 2 SHORT Connects to OUT3 for HP output DC reference Pins 2 and 3 SHORT Connects to GND for HP output reference WM8750-EV1M DESCRIPTION [default setting] [default setting] [default setting] [default setting] [default setting] ...
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... WM8750-EV1M WM8750 OPERATION SOFTWARE CONTROL There are two possible serial software control modes that may be selected to operate the WM8750. The standard SPI user interface is a 3-wire solution with the second option being a 2-wire solution. 3-WIRE MODE To operate the WM8750 in SPI (3-wire) mode, jumper switch SW4 must be set so that pins 1 and 2 are SHORT ...
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... Most PCs allow the parallel port to be configured in the BIOS settings during initial PC power up The 2-wire data and clock lines may also be connected to the board via the test R ADDR R/W ACK DATA B15-8 WM8750-EV1M ACK ACK DATA B7-0 STOP Rev 2.0, February 2005 11 ...
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... WM8750-EV1M ADDRESS REGISTER remarks (Bit 15 – (00h) 0000000 Left Input volume R1 (01h) 0000001 Right Input volume R2 (02h) 0000010 LOUT1 volume LO1VU R3 (03h) 0000011 ROUT1 volume RO1VU R4 (04h) 0000100 Reserved R5 (05h) 0000101 ADC & DAC Control ADCDIV2 DACDIV2 R6 (06h) 0000110 Reserved ...
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... Figure 4 Software Menu Panel w label. Once the licence agreement Open the .zip file. Double click on the setup.exe file. Follow the on-screen installation instructions and save to the desired location. WM8750-EV1M has been accepted, select the Rev 2.0, February 2005 13 ...
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... WM8750-EV1M The ‘Submit All’ button will submit values to every register of the WM8750. The ‘Reset’ button writes to the reset register (R15) but does not reset the control panel values. If the previous values are to be resubmitted then the ‘Submit All’ button should be pressed, if the user would like to start afresh then the ‘ ...
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... Control Mode Pins 2 and 3 SHORT Line Input Select (Phono Socket) Pins 2 and 3 SHORT Line Input Select (Phono Socket) Pins 2 and 3 SHORT Line Input Select (Phono Socket) Pins 2 and 3 SHORT Line Output Select (Phono Socket) WM8750-EV1M DESCRIPTION DATA FORMAT 0 1 ...
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... WM8750-EV1M LINKS AND JUMPERS H1 H2 SW36 J18 (BCLK) J20 (ADCLRC) J25 (DACLRC) J23 J32, J33, J34 and J35 SW3 SW4 SW1, SW2 SW5, SW7 SW8, SW9 SW27, SW28 Table 11 ADC Setup Jumper Setup (Slave Mode) w LINK/JUMPER STATUS All jumpers in place DAC clocks and data input ...
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... H1 SW6 J18 OPT _IN J20 J24 J23 J25 SPDIF_ H2 IN SPDIF_ J35 J34 OUT 1 J31 SW36 J38 J37 1 WM8750-EV1M AVDD +1.8V to +3.6V AGND RLINE IN1 SW1 SW4 SW2 LLINE IN1 J11 J13 RLINE - IN2 J17 J15 SW5 SW7 LLINE IN2 ...
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... WM8750-EV1M LINKS AND JUMPERS LINK/JUMPER STATUS H1 No jumpers in place H2 No jumpers in place SW36 Pins 2 and 3 SHORT J18 (BCLK) SHORT J20 (ADCLRC) SHORT J25 (DACLRC) SHORT J23 SHORT J32, J33, J34 and J35 OPEN SW3 SW4 Pins 1 and 2 SHORT SW1, SW2 Pins 2 and 3 SHORT ...
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... The Power Down and Interface Control panel is used to enable/disable the various sections of the WM8750 also used to set the audio interface to the required data format. Pressing the ‘Power Submit’ button will cause the settings shown on this panel to be written to the WM8750. A full device register write is not sent. w WM8750-EV1M Rev 2.0, February 2005 19 ...
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... WM8750-EV1M DAC AND ADC CONTROL Figure 9 DAC and ADC Control The DAC and ADC Control panel is used to control the many DAC and ADC related features of the WM8750. Pressing the ‘ADC and DAC Submit’ button will cause the settings shown on this panel to be written to the WM8750. A full device register write is not sent. ...
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... Volume Update bits are set. Once changes are made to the Volume Update bits, the ‘Volume Submit’ button must be left clicked for the change to take effect. Pressing the ‘Volume Submit’ button will cause the settings shown on this panel to be written to the WM8750. A full device register write is not sent. w WM8750-EV1M Rev 2.0, February 2005 21 ...
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... WM8750-EV1M MIXER CONTROL Figure 11 Mixer Control The Mixer Control panel is used to control the many signal mixing options offered by the WM8750. The volume sliders update in ‘real’ time (i.e. the ‘Mixer Submit’ button does not have to be pressed to update the mixer volume level). Pressing the ‘Mixer Submit’ button will cause the settings shown on this panel to be written to the WM8750 ...
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... TONE CONTROL Figure 12 Tone Control w WM8750-EV1M Rev 2.0, February 2005 23 ...
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... WM8750-EV1M The Tone Control panel is used to control the various tone options (3D, Bass, Treble, etc) offered by the WM8750. The sliders update in ‘real’ time (i.e. the ‘Tone Submit’ button does not have to be pressed to update the relevant tone slider level). Pressing the ‘Tone Submit’ ...
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... Figure 14 Digital Input w WM8750-EV1M Rev 2.0, February 2005 25 ...
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... WM8750-EV1M Figure 15 Software Control w Rev 2.0, February 2005 26 ...
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... Figure 16 Level Shift w WM8750-EV1M Rev 2.0, February 2005 27 ...
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... WM8750-EV1M Figure 17 Analogue Input w Rev 2.0, February 2005 28 ...
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... Figure 18 WM8750 w WM8750-EV1M Rev 2.0, February 2005 29 ...
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... WM8750-EV1M Figure 19 Analogue Output w Rev 2.0, February 2005 30 ...
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... Figure 20 Power w WM8750-EV1M Rev 2.0, February 2005 31 ...
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... WM8750-EV1M WM8750-EV1B PCB LAYOUT Figure 21 Top Layer Silkscreen w Rev 2.0, February 2005 32 ...
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... Figure 22 Top Layer w WM8750-EV1M Rev 2.0, February 2005 33 ...
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... WM8750-EV1M Figure 23 Bottom Layer w Rev 2.0, February 2005 34 ...
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... Figure 24 Bottom Layer Silkscreen w WM8750-EV1M Rev 2.0, February 2005 35 ...
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... WM8750-EV1M WM8750-EV1B BILL OF MATERIAL DESCRIPTION 74ALVC164245 16 Bit Dual Supply Bus Transceiver SSO 10uF 6.3 Dia 2.5 pitch Oscon Through Hole Cap. 16V 20% 1uF 4 Dia 2 pitch Oscon Through Hole Cap. 25V 20% 220uF 10 Dia 5 pitch Oscon Through Hole Cap. 10V 20% 0.01uF 0805 SMD Ceramic Capacitor 50V X7R ...
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... Unpop 1.32mm PCB Test Terminal TORX176 Digirtal Audio Optical Receiver 2:1 Ratio 96KHz SPDIF Digital Audio transformer SOIC TN0200T N- Channel MOSFET SOT23 WM8750L Stereo CODEC for Portable Audio QFN Table 13 WM8750-EV1M Bill of Materials 1 Note: The audio transformer used on this board is manufactured by Scientific Conversion Inc. (www.scientificonversion.com). ...
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... WM8750-EV1M APPENDIX EXTERNAL DSP CONNECTION TO THE WM8750-EV1B The WM8750-EV1B evaluation board has been designed to allow easily connected to an external DSP platform with error free operation. The following information is provided to ease the connection process and ensure that all signals sent and received by the WM8750-EV1B are reliable and at the correct voltage levels ...
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... DSP should be made from H2 on the output side of the level-shift IC from the WM8750 as shown in Figure 28. Figure 28 Connections to the DSP Platform (+5V tolerant input levels) This will ensure that the DSP input level specifications are met. w GND ADCDAT H2 MCLK GND H1 GND ADCDAT GND ADCLRC GND BCLK H2 WM8750-EV1M Rev 2.0, February 2005 39 ...
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... WM8750-EV1M SOFTWARE INTERFACE When using the WM8750-EV1B evaluation board with a DSP platform, the registers may be set using the supplied software with a PC and parallel port cable as shown in Figure 29. If the DSP is used to write to the WM8750 registers as well as supplying/receiving the audio interface timing and data signals recommended that twisted pair or shielded wires are used to connect the DSP platform to the WM8750-EV1B ...
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... Figure 30 Full DSP Control with Equal Voltage Supplies for DSP and WM8750 Figure 31 Full DSP Control with Higher Voltage DSP Supply than WM8750 w Audio DSP Interface Platform Audio DSP Interface Platform WM8750-EV1M DSP Software Control WM8750-EV1B J13 H1 J15 J17 J21 DSP ...
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... WM8750-EV1M ADDITIONAL WM8750-EV1B SETUP RECOMMENDATIONS ADC TO DAC LOOPBACK Setting up the WM8750-EV1 in loopback mode allows an analogue signal to be applied to L/RLINE_IN1, passed through the ADC, looped into the DAC and output on the L/ROUT outputs. +5V J8 DCVDD +1.42V J10 to +3.6V OPT _IN The SPDIF input is ...
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... Open the Volume Control panel. Set the DAC and L/ROUT1 Volume Update buttons. Open the Mixer Control panel. Set the Right DAC to Right Mixer and Left DAC to Left Mixer switches to ‘Enable’. WM8750-EV1M DESCRIPTION DAC clocks and data input ADC clocks and data output ...
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... WM8750-EV1M CONNECTION MONO SPEAKER The WM8750-EV1 can be set up to drive an 8 Figure 33 shows the setup required for a signal applied to the DAC signal path to be output on a speaker being driven from the phono connectors J41 and J42. As stated in Table 7, the speaker may also be attached to jumpers J37 and J38. ...
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... Pins 2 and 3 SHORT Press the ‘DAC Setup’ button. Open the Mixer Control panel. Set the ‘ROUT2 Invert’ switch to Signal Inverted followed by the ‘Mixer Submit’ button. WM8750-EV1M DESCRIPTION DAC clocks and data input ADC clocks and data output Connects to GND for HP output reference ...
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... WM8750-EV1M HEADPHONE AUTO-DETECT FUNCTION Figure 34 Headphone Auto Detect Setup One of the features of the WM8750 is a headphone auto-detect function. This can be enabled on the WM8750-EV1B by the making the following hardware and software settings. HARDWARE SETUP SOFTWARE SETUP 1. 2. The headphone auto-detect function should now be active. With no headphone connected to the 3 ...
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... Microelectronics Applications group through the following channels: Email: Telephone Apps: Fax: Mail: or contact your local Wolfson representative. Additional information may be made available from time to time on our web site at http://www.wolfsonmicro.com w apps@wolfsonmicro.com (+44) 131 272 7070 (+44) 131 272 7001 Applications Department at address on last page. WM8750-EV1M Rev 2.0, February 2005 47 ...
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... WM8750-EV1M IMPORTANT NOTICE Wolfson Microelectronics plc (WM) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current. All products are sold subject to the WM terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability ...