Wolfson WM8738 User Handbook Manual Download Page 15

WM8738-EV1M

 

WOLFSON MICROELECTONICS LTD 

Rev 2.1 August 2002 

 

15 

 

 

IMPORTANT NOTICE 

Wolfson Microelectronics Ltd (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.  

WM warrants performance of its products to the specifications applicable at the time of sale in 
accordance with WM’s standard warranty. Testing and other quality control techniques are utilised to 
the extent WM deems necessary to support this warranty. Specific testing of all parameters of each 
device is not necessarily performed, except those mandated by government requirements.  

In order to minimise risks associated with customer applications, adequate design and operating 
safeguards must be used by the customer to minimise inherent or procedural hazards.  

WM assumes no liability for applications assistance or customer product design. WM does not 
warrant or represent that any license, either express or implied, is granted under any patent right, 
copyright, mask work right, or other intellectual property right of WM covering or relating to any 
combination, machine, or process in which such products or services might be or are used. WM’s 
publication of information regarding any third party’s products or services does not constitute WM’s 
approval, license, warranty or endorsement thereof.  

Reproduction of information from the WM web site or datasheets is permissible only if reproduction is 
without alteration and is accompanied by all associated warranties, conditions, limitations and 
notices. Representation or reproduction of this information with alteration voids all warranties 
provided for an associated WM product or service is an unfair and deceptive business practice, and 
WM is neither responsible nor liable for any such use.  

Resale of WM’s products or services with statements different from or beyond the parameters stated 
by WM for that product or service voids all express and any implied warranties for the associated 
WM product or service, is an unfair and deceptive business practice, and WM is neither responsible 
nor liable for any such use. 

 

ADDRESS: 

Wolfson Microelectronics Ltd 

20 Bernard Terrace 

Edinburgh 

EH8 9NX 

United Kingdom 

 

Tel :: +44 (0)131 272 7000 
Fax :: +44 (0)131 272 7001 
Email :: 

[email protected]

 

 

 

 

 

Summary of Contents for WM8738

Page 1: ...s well as timing and data format requirements This evaluation platform has been designed to allow the user ease of use and give optimum performance in device measurement GETTING STARTED PACKING LIST T...

Page 2: ...x6 pin header H2 All WM8738 device pins are accessible for easy measurement via the 8 pin headers J11 J15 running up each side of the device BOARD INPUT Analogue input to the WM8738 is selectable via...

Page 3: ...4 5 6 OPEN 0 1 ON 1 2 3 4 0 1 SW7 J9 Figure 1 Interfaces HEADERS H1 SIGNAL J15 WM8738 SIGNAL 1 2 MCLK 1 1 DVDD 3 4 GND 2 2 SDOUT 5 6 SLAVE_LRC 3 3 BCLK 7 8 GND 4 4 FMT 9 10 SLAVE_BCLK 5 5 CAP 11 12 G...

Page 4: ...ter only selected SW8 Pins 1 2 SHORT Standard CS8427 BCLK selected Pins 2 3 SHORT Multi rate BCLK selected SW9 Pins 1 2 SHORT Standard CS8427 LRCLK selected Pins 2 3 SHORT Multi rate LRCLK selected J9...

Page 5: ...Pass Filter while putting the switch low short pins 2 3 will enable the internal digital High Pass Filter Figure 2 shows the basic getting started setup required to operate the board In this example...

Page 6: ...tup required if using an external MCLK In this example the data format is set to I2S digital HPF is active and the MCLK is running at 512fs H1 SW1 SW2 J11 J15 J5 J1 J2 J3 H2 J6 J7 J10 1 1 1 1 SW6 SW5...

Page 7: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 7 WM8738 EV1B SCHEMATIC Figure 4 Functional Diagram Figure 5 Digital Interface...

Page 8: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 8 Figure 6 Analogue Input Figure 7 Level Shift Buffer...

Page 9: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 9 Figure 8 Multi Rate Generator Figure 9 WM8738...

Page 10: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 10 Figure 10 Power...

Page 11: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 11 WM8738 EV1B PCB LAYOUT Figure 11 Top Layer Silkscreen Figure 12 Top Layer...

Page 12: ...WM8738 EV1M WOLFSON MICROELECTONICS LTD Rev 2 1 August 2002 12 Figure 13 Bottom Layer Figure 14 Bottom Layer Silkscreen...

Page 13: ...CB mount BLACK J8 1 Phono Socket PCB mount RED J13 J16 2 Phono Socket PCB mount WHITE J12 J17 2 Phono Socket PCB mount YELLOW J14 1 SMB Connector PCB Mount 50 Ohm VERTICAL J9 1 CD8427 96KHz Audio Tran...

Page 14: ...equire more information or require technical support please contact Wolfson Microelectronics Applications group through the following channels Email apps wolfsonmicro com Apps Telephone 44 131 272 707...

Page 15: ...product design WM does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of WM cover...

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