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Avnet Boards General Ultrazed EV CC problem config 8t49n241 from EEPROM
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  • Ultrazed Hardware Design
Related

Ultrazed EV CC problem config 8t49n241 from EEPROM

pierlum
pierlum over 5 years ago

Hello I'm working with Ultrazed EV carrier card and Ultrazed EV SOM. I can configurate 8t49n241 for generate 148,5MHZ clock for SDI and it works. I also wrote the EEPROM with I2C and it works. And If I manually copy the content of EEPROM in registers 0x08 - 0x83 of clock generator 8t49n241 it works. But I2C Boot-up mode from EEPROM doesn't work and BOOTFAIL and EEP_ERR status bit are high. Anyone could help me?

Thank you.

Attachments:
imageIDT_8T49N241_DST_20190305.pdf
image21210L.pdf
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  • narrucmot
    narrucmot over 5 years ago +1
    Hello Pierluigi, I am unable to download or view the attached PDF files. Can you perhaps paste the information here in plain text? Thanks, Tom
  • drozwood90
    drozwood90 over 4 years ago in reply to francaprgonz +1 suggested
    Hi there, Once you go through the IDT (now Renesas) configuration tool and export the necessary files, here is the code we use to program the EEPROM. https://github.com/Avnet/petalinux/tree/master/configs…
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  • narrucmot
    0 narrucmot over 5 years ago

    Hello Pierluigi,

    I am unable to download or view the attached PDF files.  Can you perhaps paste the information here in plain text?

     

    Thanks,

    Tom

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  • narrucmot
    0 narrucmot over 5 years ago

    Hello Pierluigi,

    I am unable to download or view the attached PDF files.  Can you perhaps paste the information here in plain text?

     

    Thanks,

    Tom

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  • pierlum
    0 pierlum over 5 years ago in reply to narrucmot

    Hi Tom,

    thank you very much for the help. The attached files are the data sheet of clock generator (https://www.idt.com/eu/en/document/dst/8t49n241-datasheet ) and EEPROM (http://ww1.microchip.com/downloads/en/DeviceDoc/21210L.pdf ). However now it seems that the problem is solved. I calculated the CRC-8 from 0x00 to 0x83  register and I wrote it in 0x84 EEPROM register. Now status bit EEP_ERR (CRC error EEPROM data) is low and also BOOTFAIL . CRC error blocked  configuration of clock generator from EEPROM. If it can be useful I attach the value of the register for IDT and EEPROM.

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