Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

CycloneII-JTAG Mode

Hi, I'm using CycloneII(EP2C8Q208).

my problem is can't configure jtag mode.

so i checked pin number. but i couldn't found error.

and i checked power supply but that's working.

i using usb_blaster. and usb_blaster is working.

help me!! It's crazy for me!!

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    You haven't mentioned what error is shown by QUARTUSII.

    Have you tried the following?

    1. Assignments>Device>Device and Pin options> Configuration

    select configuration scheme as active serial

    2. Assignments>Device>Device and Pin options> unused pins as input tri-stated

    3. In the programmer select mode as JTAG

    4. And the file to select is .sof and not .pof
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Thank you Altera Pupil.

    but it didn't work and show this message.

    "Unable to scan device chain. Can't scan JTAG mode."

    ps. I connected usb_blaster i clicked Auto detect.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Hi,

    This error happens when QUARTUSII can't detect the device for programming.

    possible reasons

    1. If u r using more than one device for programming and QUARTUSII detects some mismatch in no: of devices.

    2.JTAG server is not running.

    3.May be u r system requires driver for USB-blaster.
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    In the programmer if you click hardware setup in hardware settings are u able to see currently selected hardware as USB blaster

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    The most easy way to see, if the Quartus programmer is actually accessing the USB Blaster is to watch the blue LED.

    If USB Blaster is accessed, but can't scan the device chain, there's most likely a hardware issue with the board. The Quartus Programmer has debugging functions to trace the JTAG signals in this case.