Actions
Forum Thread Details
  • State Suggested Answer
  • Replies 7 replies
  • Answers 1 answer
  • Subscribers 349 subscribers
  • Views 1019 views
  • Users 0 members are here
Related

Ultrazed EV CC problem config 8t49n241 from EEPROM

pierlum

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
Parents Reply Children
  • 0 in reply to francaprgonz

    Either the online Configurator or the Timing Commander software is capable of producing the clock config files.

     

    I haven't done it myself, but it would appear that you use the eeprom-test.sh script that is in the GitHub folder that Dan previously referenced.

     

    Bryan

  • 0 in reply to bhfletcher

    Hi Bryan,

    Thank you for your answer, i have 2 questions that maybe i can know.

    So, the IDT 8T49N241-048NLGI  has:

    Default output frequencies:

    – Output 0 – 100 MHz, HCSL, 3.3V, PCIe_REFCLK to PCIe port connector J14 with 33 ohm series termination resistors.

    – Output 1 – 148.5 MHz, LVDS, 3.3V, AUX/Loopback, JX2 GTH_REFCLK[5]

    – Output 2 – 250 MHz, LVDS, 3.3V, 3G-SDI, JX2 GTH_REFCLK[2]

    – Output 3 – 148.5 MHz, LVDS, 3.3V, HDMI, JX2 GTH_REFCLK[0]

     

    Default U6 configuration:

    – U6 default address is 0xD8, configurable through JT1 and JT2

    – Reads configuration memory at address 0xA4

    – Device’s Vccore and Vanalog at 2.5V.

    – VCCCS at 1.8V to allow I2C master bus compliance

    – Default output level set to 3.3V.

    – Reference clock: 25 MHz internal

    – Phase Shift: 0 degrees

    – Output type: Multiple

    – Slew Rate: set to 1.0x


    Questions:
    1) I want to change the Output 2 , do you know if i can open the default config in Timing Commander software (IDT8T49N241_10Aug17_EEPROM.TXT can be contain this default config)

    2) Once i have my txt with the config, do i need to execute this code inside the linux working in the Ultrazed EV ? because it say "configurable through JT1 and JT2 " so i dont know the steps to do.

    My main idea is to make a little tutorial with the steps for future people that start with Ultrazed EV and post the tutorial here.

    Best,
    FC