KB: The details of JTAG for RSL10

Question

What are the expected JTAG interface values for the items below?

  • TCK Frequency.
  • TDI setup and hold time.
  • TDO clock to out time delay.

Recommendation

We don’t have explicit numbers for RSL10 itself, but the Coresight SWJ-DP specifies compliance to the JTAG specification, and the JTAG specification requires:

  • TDI setup time: min 8 ns
  • TDI hold time: min 5 ns
  • TDO clock to data valid on TDO: maximum 14 ns