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JPA's avatar
JPA
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4 years ago

MAX V, USB Blaster Rev C, chain is broken, 1.8V

Have a feeling this is something simple/stupid...trying to bring up a new MAX V design and program it with a USB Blaster (Linux) and it says chain is broken and it can't detect device. Same PC hard...
JPA's avatar
JPA
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4 years ago

Thanks, but it turns out that the the USB Blaster I was using must be a clone. Took it apart, and while the initial LC buffer should work at 1.8V and is being powered by the target, the next device in the signal chain is a PIC18 powered off the USB 5V, and AFAICT, the 1.8V best case Voh won't meet the input specs of the PIC. Bought a Terasic Blaster and the chain is fine and the device programs.

Thanks for responding,

JPA