digital audio interfac problem

5 thoughts on “digital audio interfac problem”

1. Hi,

   I have a problem with the digital audio interface, I am using follow hardware: eval board EVK2 with the UC864 interface.

   problem:
   The digital audio port is configured as Master (Slave is not connected) and I can only measure the clock signal.
   (see attachment: UC864_DAI_1-CLK_2-RX_3-TX_4-FS.png)

   question:
   why i can not measure the PCM_SYN & PCM_TX signal?
   is this a fundamental problem or am I doing something wrong?

   The problem is as follows reproducibly:
   > EVK2 with UC864 Interface is used
   > serial connection is used (115200baud, 8data, none parity, 1 stop bit, Hardware Flow Control aktiviert), Software TeraTerm V4.73 (SVN# 4845)
   > connection test
   at
   OK
   at+cpin?
   +CPIN: READY
   OK

   at+csq
   +CSQ: 5,99
   OK

   at+cops=?
   +COPS: (1,”A one”,”one”,”23205″,0),(2,”A one”,”one”,”23205″,2),(1,”E-Plus”,”E-Plus”,”26203″,0),(1,”o2 – DE”,”o2 – DE”,”26207″,0),(3,”3 AT”,”3 AT”,”23210″,2),(3,”A1″,”A1″,”23201″,0),(3,”T-Mobile A”,”T-Mobile”,”23203″,0),(3,”T-Mobile A”,”T-Mobile”,”23203″,2),(3,”A1″,”A1″,”23201″,2),(1,”T-Mobile D”,”T-Mobile”,”26201″,0),(1,”Vodafone D2″,”D2″,”26202″,0),,(0-4),(0-2)
   OK

   atd 0043662439011;
   OK

   ath
   OK

   > Digitale Audio Interface configuration
   at#stm=1
   OK

   at#dvi=1
   OK

   > dvi is configured
   at#dvi?
   #DVI: 1,2,1
   OK

   at#dvicfg?
   #DVICFG: 0,1,0,1,0
   OK

   at#pcmtxg?
   #PCMTXG: 0
   OK

   at#pcmrxg?
   #PCMRXG: 0

   > generate the digital audio signal (see attachment: UC864_DAI_1-CLK_2-RX_3-TX_4-FS.png)
   at#srs=0,5
   OK

   atd 0043662439011564;
   OK

   ath
   OK

    

   Thanks a lot for your help

    

    

   1. Hi Sebastian.

      Thanks for contacting the forum.

      All DVI pins except CLK share teh GPIO function so you need to select alternate function for them so:

       

      AT#GPIO=17,X,2 //  enables SYNC function

      AT#GPIO=18,X,2 // enables RX function

      AT#GPIO=10,x,2  //enables  TX function

       

      So all should be working….

       

      1. it works … (party)

          

         thanks

2. Hi Sebastian.

   Thanks for contacting the forum.

   All DVI pins except CLK share teh GPIO function so you need to select alternate function for them so:

    

   AT#GPIO=17,X,2 //  enables SYNC function

   AT#GPIO=18,X,2 // enables RX function

   AT#GPIO=10,x,2  //enables  TX function

    

   So all should be working….

    

    

   Hi Luca

    Two questions on the GE864–GPS hardware manual says that the ball K7 (DVI RX), ball D7 (DVI CLK) and H5 ball (DVI WAO) are I / O but since I can read if I want to use as GPIO and as DVI
   AT # GPIO =?, 0 What is are the addresses of these three I / O? or is an error in the manual

    

   Best Regards

    

   Giovanny

   1. Hi Giovanny,

       

      are your question related to Sabastiamn one? since this post was related to UC864 product and you are talking about GE864 GPS.

      Please leave this post closed and open a new one so we can keep clear the forum