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Tone not coming with ADAU1761 when interfaced with BF548

Question asked by laeeq on Aug 29, 2012
Latest reply on Aug 30, 2012 by laeeq

HI,

We have BF548 interfaced  with ADAU1761 sound chip. The board boots up fine with uclinux and all drivers.Attached here is the dsp project used to create the firmware. The settings in it are

 

* Hardware configuration -> IC 1 -ADAU1761 register controls -> Digital set up -> SDATA mode =SLAVE

* --- ADC_SDATA, DAV_SDATA,LRCLK , BCLK = Pull up enabled

* Codec setup -> Automatic start up -> All inputs All outputs and then apply / compile - link - download . The program and parameter.bin are also attached.  They can be opened in hex editor and checked. 

 

is this all correct ? 

 

While running tone, i do not get any output on speaker.

 

Interfaced

LRCLK - TFS0 (48Khz checked with CRO)

BCLK - TSCLK (3.072 Mhz)

ADC SDATA - DT0PRI

DAC SDATA - DR0PRI

 

The 48 Mhz sampling freq, 3.072 Mhz, and others are coming. I have verified on the PC oscliscope. The tone value (1000HZ) doesn't come . When frequency is changed, same result is obtained. What could be going wrong ?

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