The purpose of clk_gddr_o is to serve as clock source to another chip outside the FPGA. Do take note that this output clock is synchronous with ser_tx_o. Another thing, the clock source of clk_gddr_o is coming from the PLL + DDR module (with ...
The two PLLs REFCLK of SGMII CDR are driven by the dedicated connection from LLC_PLL (Lower Left Corner PLL). Note: Some dedicated GPLL_LLC input clock is reserved for one of the SGMII CDR inputs and cannot be used for the external PLL's REFCLK. ...
Lattice Technical Support Expectation Please be advised that highest priority for Lattice Technical Support will be given to 1. Software which is not working as expected or suspected bugs. We recommend that customers use the latest software tools and ...
Lattice currently recommends the following for implementing Gigabit Ethernet interfaces: CertusPro-NX FPGAs: Use SERDES-based SGMII or RGMII Certus-NX, MachXO5-NX, and CrossLink-NX: Use RGMII These recommendations are based on updated LVDS-based ...
Glitch Fliter is used to prevent short-duration events of glitches, This is used to prevent False tripping on noise in a system. GLITCHFilter in device constraints , enables 1ns glitch filtering.
Description: Nexus device family has a default I2C slave address of 0x40 and you are allow to modify it based on your requirement. Solution: To permanently modify the I2C address, you can modify the desired value in .fea file and use the Programmer ...
Description: To understand the RTL formatting of the PCIe configuration space in the Nexus' PCIe demos, please refer to the following details. Figure 1 illustrates the initialization of the PCIe configuration space in the Nexus' demo.