Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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JTAG Chain - which is which???

Altera_Forum
Honored Contributor II
‎06-27-2008 12:33 PM
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I am using Quartus2 web. My PCB has 2 blank MAX3000 CPLD's on it connected using JTAG chaining. Quartus shows both in the programmer but how do I know which is which.?They need to have different files loaded to them and I dont want to configure the wrong ones. I am concerned this would set some of the pins as ouputs when they should be inputs and cause damage to some of the devices on the board.

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Altera_Forum
Honored Contributor II
‎06-27-2008 05:02 PM
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I think, the devices are enumerated in programmer windows and selection menus in JTAG chain order.

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Altera_Forum
Honored Contributor II
‎06-27-2008 10:03 PM
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chain order - so is# 1 the one that the data goes into first or comes out of first?

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Altera_Forum
Honored Contributor II
‎06-28-2008 08:01 AM
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It must not be mentioned explicitely, that there would be many options to clear your doubts without damaging a device. However, in my imagination, water is flowing down, not upwards. So the data.

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