14
27.
Audio System – JP 16 and JP17
The UEZGUI-EXP-DK Board includes a Wolfson I2S audio system and an I2C controlled audio amplifier, connected to an
onboard speaker. By default on JP17 only jumpers on 1-2, 3-4, and 5-6 are loaded. The rest of the jumpers on JP17 must
be loaded to use I2S audio. Only certain micro-controllers have support for I2S audio. DAC audio must be used
otherwise. DAC audio can be fed through the Wolfson codec to be used with headphones or external speakers using I2C
control commands.
Pin Number
Description
JP16 – 1 – 2
3.3V to I2S Codec
JP16 – 3 – 4
DAC from µC to I2S Codec
JP16 – 5 – 6
DAC from µC to I2C Amp
JP16 – 7 – 8
I2S Codec to I2C Amp
JP16 – 9 – 10
I2C SCL to I2C Amp
JP16 – 11 – 12
I2C SDA to I2C Amp
JP16 – 13 – 14
3.3V to I2C Amp
JP16 – 15 – 16
Ground to I2C Amp
JP17 – 1 – 2
I2S RX WS to I2S Codec
JP17 – 4 – 4
I2S RX SDA to I2S Codec
JP17 – 5 – 6
I2S TX WS to I2S Codec
JP17 – 7 – 8
I2S TX SDA to I2S Codec
JP17 – 9 – 10
I2S TX CLK to I2S Codec
JP17 – 11 – 12
I2C SCL to I2S Codec
JP17 – 13 – 14
I2C SDA to I2S Codec
JP17 – 15 – 16
Ground to I2S Codec
28.
Additional Documentation, Schematics, and Software Updates
Complete Users Manuals, Schematics, Software updates, and documentation are available from the following websites
(please refer to the websites for the latest updates):
•
http://www.uEZGUI.com/uEZGUI-EXP-DK
•
http://sourceforge.net/projects/uez/
