5253 - iCE40 UltraPlus: Is the Reset signal in PLL generation synchronous or asynchronous in Lattice iCE40?
The Reset signal in PLL generation is asynchronous in Lattice iCE40.
Related Articles
6506 - PLL: When will the reset of the PLL be released?
If the reset is released before the input clock to the PLL stabilizes (or is input), the PLL does not output the clock and Lock signals.
Definition: When will the reset of the PLL be released? If the reset is released before the input clock to the PLL stabilizes (or is input), the PLL does not output the clock and Lock signals. Solution: Please find section 14.5.3 of FPGA-TN-02095 on ...
6131 - Certus-Nx: Are the outputs of the Nexus platform's sysCLOCK PLL synchronous signals?
Solution: Yes, the outputs of the PLL (e.g. CLKOP, CLKOS, CLKOS2, etc.) are synchronous signals. But you can introduce dissimilar phase shifts to the outputs, either through static or dynamic mode phase adjustment which is available on the Nexus ...
793 - PLL: If the PLL loses lock after the LOCK signal has gone high/active, will the LOCK signal go low to indicate that the PLL has lost lock?
Definition: The Lattice FPGA LatticeECP2, LatticeECP2M, LatticeECP3, LatticeSC all have PLL modules. The PLL module has a Lock signal indiating the status of the PLL. For some applications users may use this LOCK signal as a flag or control signal ...
7738 - Can Global Set/Reset resources be analyzed in Radiant STA tools with Avant?
Global Set/Reset resources cannot be analyzed in STA tools for both Nexus and Avant devices. For the resource's useability, Users may refer to Global Set/Reset Usage for Nexus Platform Application note found in ...
3899 - iCECube2 / iCE40 / PLL: What is the difference between selecting "PACKAGEPIN" and "General Purpose IO Pad or Core Logic" options during PLL generation?
Solution: If the "Dedicated Clock Pad (single ended)" is selected during the PLL generation, the IO pin connected to the PLL's "PACKAGEPIN" becomes dedicated and hence, the signal coming in from that IO pin can't be used for any other logic design in ...