Re: 52235/52230 problem

Dear David

Yes the flash is programmed and varified. Also I had written small code and tested. I had checked with SRAM also but the result is same. The Code is downloaded to SRAM but no execution. On EVB same codes are working in SRAM as well as FLASH
Sanjay Morab

Accord Electronics
50, Rashmi Industrial Estate,
Vasai Industrial Area,
Navghar, Vasai Road(e),
Dist. Thane
Pin - 401210
Ph -+91-250-3240050
      +91-250-2391407
Fax - +91-22-28400579
H.P. - +91-9324895103

  ----- Original Message ----- 
  From: Seymour David 
  To: Sanjay Morab 
  Sent: Wednesday, January 30, 2008 8:25 PM
  Subject: RE: [ColdFire] 52235/52230 problem


  Hi Sanjay,

  Are you certain you are programming the flash?  After programming best to peek at memory to verify that the core really was programmed into flash.

  Also good to test using small piece of code to load directly to SRAM and try running/debugging to test the tools.

  Regards, 

  David 

   

  David E Seymour


------------------------------------------------------------------------------

  From: [email protected] [mailto:[email protected]] On Behalf Of Sanjay Morab
  Sent: Wednesday, January 30, 2008 2:37 AM
  To: Seymour David
  Subject: Re: [ColdFire] 52235/52230 problem

   

  Dear Mark

   

  I had cheked the the VDD1 and VDD2 supplies. Vdd2 it is 2.5 and on VDD1 I am getting frequency instead of clean DC. I had used 0.22 uF decoupling as used in EVB. This consistant problem I am facing is The File gets downloaded to the MCF52230 but does not execute. All three board I had assembled does the same. 

   

   

  Sanjay Morab

   

  Accord Electronics
  50, Rashmi Industrial Estate,
  Vasai Industrial Area,
  Navghar, Vasai Road(e),
  Dist. Thane
  Pin - 401210
  Ph -+91-250-3240050
        +91-250-2391407
  Fax - +91-22-28400579
  H.P. - +91-9324895103

    ----- Original Message ----- 

    From: Mark Butcher 

    To: Sanjay Morab 

    Sent: Monday, January 28, 2008 4:02 PM

    Subject: AW: [ColdFire] 52235/52230 problem

     

X-SpamDetect-Info: ------------- Start ASpam results ---------------X-SpamDetect-Info: This message may be spam. This message BODY has been altered to show you the spam information X-SpamDetect: ****: 4.300000 From3consonants=3, Some html comments=0, Aspam=0X-SpamDetect-Info: ------------- End ASpam results ----------------- Sanjay

     

    I recommend using the Layout guide in the following Freescale Application Note: AN2759 [it is for the NE64 but suitable also for the Coldfire]
     

     http://www.freescale.com/files/microcontrollers/doc/app_note/AN2759.pdf?fpsp=1&WT_TYPE=Application%20Notes&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation

     

    The MC9S12NE64 has a heat sink area on the bottom of the chip which is used to help dissipate heat (from the PHY) to the board. This isn't available on the M5223X and so it does tend to run a little hot.

    Check the core supply voltage on VDD1 and VDD2 - it should be decoupled with capacitors and measure about 2.5V. I did have a board (M52233) which suddenly stopped working and this voltage was too low - it became very hot. After replacing the chip the board worked correctly again.

     

    Good luck

     

    Regards

     

    Mark

     

     

     

    Mark Butcher Bsc (Hons) MPhil MIEE

     

    M.J.Butcher Consulting                

    Obere Bahnhofstr. 13,  CH-5507 Mellingen,

    Switzerland         www.mjbc.ch / www.uTasker.com

    056 491 48 10 / 079 402 26 37 / Skype: M_J_Butcher

     

     

     

    -----Ursprüngliche Nachricht-----
    Von: [email protected] [mailto:[email protected]] Im Auftrag von Sanjay Morab
    Gesendet: Montag, 28. Januar 2008 03:04
    An: [email protected]
    Betreff: Re: [ColdFire] 52235/52230 problem

     

    Dear Mark

     

    One information also required.

     

    When we are using the two layer board for the ETHRNET what should be trace width and separation required from out put of the Magnatics to RJ45 connector as those two pairs are connected as differntial pair.

     

     

    regards

    Sanjay Morab

       

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