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AD9889 I2S Audio 16 bit problem

Question asked by Vijayabharathi-c on Jan 4, 2013
Latest reply on Jan 23, 2013 by GuenterL

Hi

 

We are currently using the AD9889B HDMI Tx in our custom board. We have interfaced Audio serial port from a SoC to HDMI Audio port and trying to use I2S interface. As per datasheet, AD9889b supports only 32 bit I2S[32L + 32R]. i tried to send my 44.1Khz 16 bit audio as 32 bit audio by padding last 16 bit as zeros. I could able to observe some mild noise when i run songs.. It is heavily noticeable if i run sine tone of 1Khz. Kindly suggest how to solve this noise issue.

 

Current pixel clock : 30Mhz( for resolution 800 x 600)

N Info : 6272

CTS : Auto generation

 

Regards

Vijayabharathi C

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