I want to use JTAG to communicate with IMX6UL for debug purpose, but now the JTAG can't communicate with IMX6UL.
I find the signals, TMS, TDI, TCK, NTRST and POR_B, from JTAG are correct, but we can't receive the TDO output from IMX6UL.
My question is how do i check status about ”JTAG_SMODE[1:0]” and the register 0x460 of Boot Fusemap ??? Are there have any hardware pin can check it???
The description about JTAG_SMODE at IMX6ULHDG
The description about r 0x460 of Boot Fusemap at IMX6ULRM
Thanks and Regards,