Hi Haran,
Even I am facing the same problem
On Thursday, 28 November 2013 13:43:10 UTC+5:30, Haran Ashok wrote:
>
> Hi ,
>
> I am currently working with audio configuration on Beagle Board XM Rev B
> for ThreadX RTOS.
>
> The beagle board xm has TPS65950 <http://www.ti.com/product/TPS65950> as
> the audio codec, which is connected to the core through McBSP 2.
>
>
> - I have written Mcbsp driver and it works fine in loopback mode.
>
>
> - I have written I2C controller driver to configure the
> TPS65950<http://www.ti.com/product/TPS65950>audio codec, I verified the I2C
> driver by writing data to a particular
> offset on the Audio Codec and read it back and it gave the proper data that
> was written.
>
>
> Now the problem is, i configured the audio codec as per the programming
> guide on data manual of TPS 65950 for a play back scenario but i am able to
> hear only the POP noise that occurs when the audio chip is initialized and
> then i don't hear any sound at all on my headset.
>
> Following is the Mcbsp register dump and the Audio register dump
>
>
> ******************************************************************************
>
> "MCBSP Registers"
>
> PCR = 0x0
> SPCR2 = 0x30
> SPCR1 = 0x0
> RCR2 = 0x0
> RCR1 = 0x0
> XCR2 = 0x1
> XCR1 = 0x40
> SRGR2 = 0x2000
> SRGR1 = 0x1
> MCR2 = 0x203
> MCR1 = 0x0
> RCERA = 0x0
> RCERB = 0x0
> XCERA = 0x1
> XCERB = 0x0
> RCERC = 0x0
> RCERD = 0x0
> XCERC = 0x0
> XCERD = 0x0
> RCERE = 0x0
> RCERF = 0x0
> XCERE = 0x0
> XCERF = 0x0
> RCERG = 0x0
> RCERH = 0x0
> XCERG = 0x0
> XCERH = 0x0
> REV = 0x23
> RINTCLR = 0x0
> ROVFLCLR = 0x0
> SYSCONFIG = 0x0
> THRS2 = 0x1
> THRS1 = 0x0
> IRQ STATUS = 0x0
> IRQ ENABLE = 0x0
> WAKEUPEN = 0x0
> XCCR = 0x1800
> RCCR = 0x808
> XBUFF = 0x500
> RBUFF = 0x0
>
> ***************************************************************************
>
> "Audio Registers"
>
> RX PATH SEL = 0xa
> APPL CTL = 0x10
> AVDAC CTL = 0x3
> ARXL1 APGA CTL = 0x33
> ARXR1 APGA CTL = 0x33
> SOFTVOL CTL = 0x1
> CODEC MODE = 0x2
> HS SEL = 0x72
> ARXL1PGA = 0xbf
> ARXR1PGA = 0xbf
> ARXL1 APGA CTL = 0x33
> ARXR1 APGA CTL = 0x33
> HS GAIN SET = 0x5
> ANAMICL = 0x0
> MISC SET = 0x2
> HS GAIN SET = 0xf
> HS POPN SET = 0x6
> Option = 0xc3
>
>
> *********************************************************************************
>
> Also please let me know if there is any way with which i can verify
> whether data is actually flowing through the MCBsp and reaching the Audio
> Codec.
>
> Regards
>
> Haran
>
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