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pallison
Adventurer
Adventurer
459 Views
Registered: ‎03-30-2012

Is the "single device configuration" flow in UG470 incorrect?

UG470 v1.13.1 (which appears to be the most current one) appears to be missing a few steps in Table 10-4 "Single Device Configuration Sequence."

Step 8 says to stay in the RTI state for 10 ms (10K clocks @ 1 MHz), but then Step 9 strangely just says "Start loading the CFG_IN instruction, LSB first," specifying TMS as 0, TDI as 00101, and 5 clocks.

This seems to be missing actually *going* to SHIFT_IR, which would require doing steps 3 and 4 again (move to Select-IR, TMS=1, 2 clocks, and move to Shift-IR, TMS=0, 2 clocks).

Am I missing something or is the documentation wrong here?

ug470_table10_4.png
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2 Replies
iguo
Xilinx Employee
Xilinx Employee
419 Views
Registered: ‎08-10-2008

Yes to make any command work you should first enter into SHIFT-IR. 

RTI just a padding time state.

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pallison
Adventurer
Adventurer
310 Views
Registered: ‎03-30-2012

OK, so this is just a mistake in UG470. Is there a way to get this noted to be updated?

Thanks.

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