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F28M35H52C1 Rev B Boot from Flash and clock Frequency

Ali Mortezaei
Prodigy 20 points

Hi all

I’ve some problems with F28M35H52C1 Rev B.

I designed a board with F28M35-Rev0, that well programmed by XDS100 V2

But new boards with F28M35H52C1 Rev B have some bugs. When I want to program the chip by, CCS 5.3.0, I find the warning that “Device ID is not recognized or is not supported by driver”.

By the way; Programing the RAM of the chip by Debugger, shows other problems. For example a sample program in Control Suite “Timer Sample for DSP core” that blinks LED every 1 sec with CPU Timer. It works very well with F28M35-Rev0. But the board with F28M35H52C1 Rev B blinks every 15 seconds.

Can anyone Help?

  • 0
    TI__Guru** 116081 points

    Hi Ali,

    By the way; Programing the RAM of the chip by Debugger, shows other problems. For example a sample program in Control Suite “Timer Sample for DSP core” that blinks LED every 1 sec with CPU Timer. It works very well with F28M35-Rev0. But the board with F28M35H52C1 Rev B blinks every 15 seconds.

    Look like the crystal on board has some startup issue due to which missing clock is getting detected due to which CPU clock get switched to 10MHz internal OSC. You can confirm the same by checking the value of MCLKFLG bit in MCLKSTS register (0x400F_B830) on M3 side.

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    Prodigy 20 points
    Hi Vivek
    Thank you for your quick reply.
    You're right MCLKFLG is 1 because external oscillator should connect to X1 pin with 47 Ohms Resistor but I soldered 47KOhms.

    I'll be so appreciated to help me about my other question
    How can I Update CCS Driver to recognize F28M35H52C1 Rev B Flash?

    Best Regards,

    Ali Mortezaei
  • 0 in reply to Ali Mortezaei
    TI__Guru* 87155 points

    Ali,

    Did you check for updates in the CCS help menu and install the "C2000 Device Support" update patch?

    Thanks and regards,

    Vamsi