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FX3 JTAG TCK pullup / pulldown
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FX3 JTAG TCK pullup / pulldown

Superspeedy posted on 11 Oct 2012 5:52 AM PST
Member
8 Forum Posts

The FX3 JTAG port has internal pullups of 50k on all connections except TCK which has a 10k pulldown, according to the data sheet.

The FX3 devkit PCB has 10K pullup resistors on all these pins. Is the conflict on TCK intended? And if I want to use the same JTAG debug cable on my own board as on the devkit, is this arrangement what is required?




Re: FX3 JTAG TCK pullup / pulldown

RSKV posted on 12 Oct 2012 05:02 AM PST
Cypress Employee
655 Forum Posts

Hi,

The pull up resistors on the FX3 DVK will be removed in the next revision. The statement that has been mentioned in the data sheet is correct. You don't need any external pull up resistors.

Regards,

sai krishna.



Re: FX3 JTAG TCK pullup / pulldown

Superspeedy posted on 14 Oct 2012 10:15 AM PST
Member
8 Forum Posts

Thanks.






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