I use a MCU card with ATMEGA2560 Microcontroller from
http://www.mikroe.com/en/tools/mcu_cards/avr/bigavr/
Now I connected my JTAG programmer to this board, my jtag programmer is a
E-lab programmer: http://www.e-lab.de/pdf/ISP3_en.pdf
I connected the TMS, TCK, /RESET, TDO, TDI, VCC and GND from the
programmer to the ATmega2560. I send +5Volt from the programmer to the
CPU, the programmers is JTAG enabled using the E-lab programmer software.
My problem is that the programmer does not find the CPU.
Even if I try the SPI bus, the programmer can not find the cpu.
I do not know if any other signals must be in special state in order to
enable the jtag.
For example, on a ATmega128, the PEN pin must be connected to VCC. Is
there something.
Posting a schematic of a ATmega2560 with Jtag interface would help me.
Regards,
Mega lover
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