Bluetooth、 HDMI 、AUX input to the ADAU1702
dear enginneer ,
I have three inputs :
1、bluetooth , the input include : BT-LRCK，BT-BCK，BT-DO
2、HDMI , the input include : HD-MCLK，HD-WS，HD-SD，SCK
3、AUX , the input include :SDIN，SCLK，LRCK，MCLK
One output:
（I2S—MCLK，I2S-SCLK，I2S-LRCK，I2S-DATA)
how to make them connect to the ADAU1702 ,and make them possible ?
Audio Signal Processors
adau1702
SigmaDSP Audio Processors
Hi,
Sorry for the delay in responding but the office here has been shut for two weeks over the holidays. The ADAU1702 supports I2S input/output. It looks like your AUX input is an I2S input?? If this is the case then you can use the I2S port on the 1702 for I2S in/out. See figure 2 and figure 5 of the datasheet for Serial port pins and timing. You will need to figure out if the ADAU1702 will be BCLK/LRCLK slave or master, this will probably be decided by the device you are interfacing with. If the ADAU1702 is to be BCLK/LRCLK slave then the MCLK supplied to the ADAU1702 must be synchronous with BCLK/LRCLK source (hopefully the MCLK of the other device is suitable for this).
Best Rgds,
Alan
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