Serge93
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Re: JTAG Chain Broken on Agilex 7-I Dev Kit
Hello Fakhrul, I have disabled the auto adjust frequency at chain scanning and reduced the frequency to 6MHz, it did not solved the problem. About RMA, can you explain me what is the process, what should I do on my side, do you manage the process, how I will be in touch with you ? Thank you for your help. SergeRe: JTAG Chain Broken on Agilex 7-I Dev Kit
Hello Fakhrul, I tried to read the Device info, but it was impossible. I measured the 12V at J11. The 12V is always present with SW6 Off or SW On. D6 reamins always Off. Please see the picture attached of the baord with SW6 On. You will see D6 Off and the Fan On, i.e. the Power is on. Thank you for help. SergeRe: JTAG Chain Broken on Agilex 7-I Dev Kit
Hello Fakhul, So, About (1) : Yes it is the first time, the board was working well for several months, and one day when I was debugging a new IP, I did several power cycle, and suddenly I could not configure the board, it was amazing. About (2) : My serial number is 8100650, so DK-DEV-AGI027-RA and AGIB027R29A1E1VB About (3) : Please see the picture attached About (4) : I was unable to find you 'Device info -> Read Device Info' menu, where it is ? About (5) : I using the board only in 'Bench Power Mode'. So no, LED D6 is off. Thank you for help. SergeRe: JTAG Chain Broken on Agilex 7-I Dev Kit
Hello Fakhul, So, About (1) : I have set all the switches as asked, please see the picture attached. About (2) : Unfortunately The LED D6 is Off. About (3) : See the picture attached, I cannot communicate with the board, So I cannot get any voltage value. About (4) : Please see the attached picture. About (5): I had to use the J10 instead of J8 to be able to reconfigure the MAX10, otherwise I cannot get the JTAG chain and so I cannot configure the MAX10. I power cycle and the JTAG is still the same... Thank you for your help. SergeRe: JTAG Chain Broken on Agilex 7-I Dev Kit
Hello Fakhul, I already did all what you said including trying to access the board through the BTS. I was able to reconfigure the MAX10 by bypassing the FPGA but it changed nothing. The Agilex 7i is impossible to configure even with an external USB Blaster with reduced clock. kit ordering code : AGIPCIe8100650 / N24193-001 The Result of jtagconfig --debug is : [niosv-shell] C:\Users\serge\AppData\Local\quartus> jtagconfig --debug 1) AGI FPGA Development Kit [USB-1] (JTAG Server Version 25.3.1 Build 100 12/19/2025 SC Pro Edition) Unable to read device chain - JTAG chain broken Captured DR after reset = () Captured IR after reset = () Captured Bypass after reset = () Captured Bypass chain = () JTAG clock speed auto-adjustment is enabled. To disable, set JtagClockAutoAdjust parameter to 0 JTAG clock speed 24 MHz Thanks for help. Serge
