Visible to Intel only — GUID: bti1488319328815
Ixiasoft
Visible to Intel only — GUID: bti1488319328815
Ixiasoft
DCLK and TCK Signal Integrity
The TCK and/or DCLK traces should produce clean signals with no overshoot, undershoot, or ringing. When designing the board, lay out the TCK and DCLK traces with the same techniques used to lay out a clock line. Any overshoot, undershoot, ringing, or other noise on the TCK signal can affect JTAG configuration. A noisy DCLK signal can affect configuration and cause a CRC error. For a chain of devices, noise on any of the TCK or DCLK pins in the chain could cause JTAG programming or configuration to fail for the entire chain.
Number | Done? | Checklist Item |
---|---|---|
1 | Design configuration DCLK and TCK pins to be noise-free. |