Visible to Intel only — GUID: jbn1712214527641
Ixiasoft
Visible to Intel only — GUID: jbn1712214527641
Ixiasoft
2.7. JTAG Signals
The Nios® V processor debug module uses the JTAG interface for software ELF download and software debugging. When you debug your design with the JTAG interface, the JTAG signals TCK, TMS, TDI, and TDO are implemented as part of the design. Specifying the JTAG signal constraints in every Nios V processor system is an important system design consideration and is required for correctness and deterministic behavior.
Altera recommends that any design’s system clock frequency be at least four times the JTAG clock frequency to ensure that the on-chip instrumentation (OCI) core functions properly.