Solution: The datasheet only shows speed grade -6 support for LVCMOS10R33 and LVCMOS10R25 IO types because it can cover all the frequency range up to the fmax parameter of speed grade -6 devices. The Diamond software still allows LVCMOS10R33 for ...
No, there is only one speed grade for these devices. The clock signal is internal and based off an 8MHz oscillator. The frequency of the internal oscillator ranges from 7.6MHz to 8.4MHz. The 8MHz oscillator then gets divided down to 250kHz for the ...
Solution: iCE40 devices do not support fabric based tristate implementation. Tri-states are implemented using SB_IO primitive (iCEcube2). When "Disable IO insertion" is selected in Synplify Pro, SB_IO primitives do not get added at the IO's and ...
Description: The sources of external reference clocks for SERDES can be: Primary Clock pad (PCLK) FPGA PLL Since the extra jitter caused by the FPGA resources to route the clock to the SERDES will be passed onto the transmit data, care must be taken ...
LatticeECP2/M, LatticeECP3, and LatticeSC/M devices require a single external resistor which is used to create the bias currents for the IO. This resistor is connected between the XRES pin and ground. The device will not initialize and configuration ...