How to test imx6s with IEEE 1149.1

[zhengluyan]

In the boundary scan test of imx6s motherboard, the correct idcode cannot be obtained. In addition to the standard JTAG 5 wires (JTAG)_ TMS、JTAG_ TCK、JTAG_ TRSTB、JTAG_ TDI、JTAG_ Does imx6s have special control when entering boundary scan mode? How to test imx6s with IEEE 1149.1.

[igorpadykov]

Hi Luyan

for boundary scan mode JTAG_MOD should be high, also one can look at

sect.Chapter 9  Using BSDL for Board-level Testing

IMX6DQ6SDLHDG, Hardware Development Guide for i.MX 6Quad, 6Dual, 6DualLite, 6Solo Families of Applic...

Best regards
igor

[zhengluyan]

hello dear sir:

                     JTAG in e-fuse bits_ Smode [1:0] and SJC_ Does disable need to be 0?           

Thanks very much

[igorpadykov]

one can look at AN4686

Configuring Secure JTAG for the i.MX 6 Series Family of Applications Processors

Best regards
igor

[zhengluyan]

Hi~igorpadykov :

        I want to know what means"BSDL was only tested at 1.8 V." in the document IMX6DQ6SDLHDG.pdf

Thanks very much!

[zhengluyan]

hello dear sir:

       Below is the board settings which I have used:

       JTAG_MOD is High;

       POR_B is High;

      BOOT_MODE[1:0] is [1:0] or[0:0] ?

     What does "BSDL was only tested at 1.8 V." mean?  is NVCC_JTAG is 1.8V or all NVCC power is 1.8V? or  other ?

  Thanks very much