w WM8523-6228-DT20-EV1 Example Configurations DOC TYPE: Example Configurations BOARD REFERENCE: WM8523-6228-DT20-EV1 BOARD TYPE: Customer Standalone Board WOLFSON DEVICE(S): WM8523 DATE: September 2009 DOC REVISION: Rev 1.0 INTRODUCTION The WM8523-6228-DT20-EV1 Customer Standalone Board provides a complete hardware platform for evaluation of the WM8523. The WM8523 Customer Standalone Board can also be connected directly to a processor board using flying wires or appropriate headers. Configurations covered are listed below: DAC Playback to Line Out This document should be used as a starting point for evaluation of WM8523 but it will not cover every possible configuration. Assumptions: 1. The user is familiar with the WM8523-6228-DT20-EV1 board and that the board is configured correctly for the path of interest (see related documents below). Related documents: 1. WM8523-6228-DT20-EV1_Schematic_Layout.pdf WOLFSON MICROELECTRONICS plc To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews September 2009, Rev 1.0 Copyright 2009 Wolfson Microelectronics plc WM8523-6228-DT20-EV1 Customer Information TABLE OF CONTENTS INTRODUCTION ............................................................................................................. 1 TABLE OF CONTENTS .................................................................................................. 2 BOARD CONFIGURATION STAND-ALONE ................................................................. 3 CONNECTION DIAGRAM ......................................................................................................... 3 I/O TABLE.................................................................................................................................. 4 SYSTEM BOARD CONFIGURATION ............................................................................ 5 DAC PLAYBACK TO LINE OUT ................................................................................................ 5 APPLICATION SUPPORT ......................................................................................................... 7 IMPORTANT NOTICE .................................................................................................... 8 ADDRESS: ................................................................................................................................ 8 w Customer Information September 2009, Rev 1.0 2 WM8523-6228-DT20-EV1 Customer Information BOARD CONFIGURATION STAND-ALONE The WM8523 Customer Standalone 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 device. CONNECTION DIAGRAM Figure 1 below shows the connections required to power-up and control the WM8523 Customer Standalone Board. Please refer to Table 1 for further detail on external I/O connections. Figure 1 Stand-Alone Board Configuration w Customer Information September 2009, Rev 1.0 3 WM8523-6228-DT20-EV1 Customer Information I/O TABLE SIGNAL BOARD REFERENCE PART TO REMOVE IMPORTANT NOTES R18 R9 LINEVDD and AVDD must always be within 0.3V of each other and at 3.3V ± 10% Voltage Supplies AVDD LINEVDD Ground J7.2 J4.2 AGND LINEGND Master Clock TP6 TP6 Analogue grounds must always be within 0.3V of each other H1.2 Jumper H1.1 Master clock LRCLK H1.6 Jumper H1.5 Digital audio interface left/right clock BCLK H1.10 Jumper H1.9 Digital audio interface bit clock DACDAT H1.14 Jumper H1.13 Digital audio interface data input SDOUT H2.2 Jumper H2.1 SDA H2.6 Jumper H2.5 MCLK Control Interface HW MODE SW MODE 0 = No de-emphasis I C Address bit [1] 1 = De-emphasis SDOUT pin (SPI Mode) AIFMODE[1 :0] Serial Control Interface data Input Pin 00 = LJ 24-bit SCLK H2.10 Jumper H2.9 2 01 = I S 24-bit 10 = RJ 16-bit 2 Serial Control Interface clock input Pin 11 = RJ 24-bit ¯¯¯ CS CIFMODE H2.14 H2.18 Jumper H2.13 Jumper H2.17 Referenced to LINEVDD level Audio Interface 2 0 = Mute enabled I C Address bit [0] 1 = Mute disabled CS (SPI Mode) Z = Hardware Mode 0 = I C Mode 2 1 = SPI mode Analogue Outputs LINEVOUTL J5 Left line output LINEVOUTR J8 Right line output Table 1 I/O Configuration Table 1 above shows the points on the board where external stimuli can be connected, and the description of each pins function. It also details the components that must be removed before external stimuli are connected to avoid bus contention. w Customer Information September 2009, Rev 1.0 4 WM8523-6228-DT20-EV1 Customer Information SYSTEM BOARD CONFIGURATION This section focuses on evaluation of the WM8523-6228-DT20-EV1 Customer Standalone 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 LINE OUT The following section details board configuration for DAC playback to line out. BLOCK DIAGRAM Figure 2 WM8523 Block Diagram w Customer Information September 2009, Rev 1.0 5 WM8523-6228-DT20-EV1 Customer Information BOARD CONFIGURATION Figure 3 Board Configuration w Customer Information September 2009, Rev 1.0 6 WM8523-6228-DT20-EV1 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 Customer Information September 2009, Rev 1.0 7 WM8523-6228-DT20-EV1 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. 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