Pins A9 & C9 are dual purpose pins that are SCL & SDA for the I2C primary port on the LCMXO2-2000HC-4BG256C and have an absolute maximum rating of -0.25V and -0.3V. Please refer to note 5 of the 'Absolute Maximum Ratings' under the 'DC and Switching ...
As long as the clock speed for the wishbone bus is at least 7.5x higher than the I2C (SCL) bus speed, there shouldn't be any issue. To further check this, it is recommend to perform Gate-Level Timing Simulation.
Description: The Lattice I2C Master IP core is limited only for 8-bits at maximum of 255 bytes. If you want to have an I2C transactions using >/= 256 bytes, you will need to start a new or next transaction using CONTROL_REG.start.
Description: The I2C Master IP from Lattice does not support repeated start to allow a read then write or a write then read command. Solution: A workaround for this is to perform separate start-stop transactions, refer to FPGA-IPUG-02071 section 2.5. ...
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.