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Altera_Forum's avatar
Altera_Forum
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17 years ago

Program MAX3000 without JTAG?

Hi, I'm going to use the MAX3000A (EPM3032A) in a project and I need 34 i/o ports so I will have to disable the JTAG port and use the four JTAG pins as I/O. I've found the setting in Quartus t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Hi

I also had this problems

After checking many documents and spend several time i can program the chip with a simple jtag programer(non high voltage).

Both of high voltage programing and non high voltage programing, algorithm and hardware is same, but in high voltage programing pin OE(pin 44 in EPM3032) must be connected to 11 volts.

I disconnect it from anywhere and connect it to the 12 volts in circuit with a 1k ohm resistor to programing and reprograming the chip completely and verify, when jtag is disabled.

After programing is done, the resistor must be disconnected.

Thanks everyone.