5909 - Sii9777/Sii9777: What's the latest Sii9777/Sii9777s firmware?

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  To use the ispPAC-POWR1220's on-chip ADC, you must perform the following steps (via I2C): Issue a start conversion command. This is a write to the ADC mux register (0x09) in which you specify the ADC's input channel and the attenuation factor. ...

• 241 - IO Simulation: How to simulate open drain IO/s?

  An open drain IO drives output high as a 'Z' and drives low as a '0'. These IOs are often used when multiple devices are connected to a bus. On devices that do not have an open drain option, you can simulate an open drain circuit using an OE on the ...

• 2157 - [LatticeECP3] Will the LatticeECP3's read datavalid generation circuit work properly when I remove the VTT termination from the DQS pad?

  The datavalid generation circuit works properly as long as you provide the READ pulse input to the DQSBUF block in the right timing. LatticeECP3 devices have preamble detection function which is a level detection circuit instead of edge detection. ...

• 6016 - MachXO2/XO3/XO3D: Do we have hot socketing specification in LVDS I/O standard?

  There’s no difference between single-ended and differential I/O. The hot socketing specification remains the same.

• 2005 - LatticeECP3:  How do I select between the two Vol Max values 0.4V, or 0.2V documented in the LatticeECP3 device datasheet sysI/O Single-Ended DC Electrical Characteristics?  

  Vol Max is not a user configurable setting. For any of the LVCMOS pin configurations, under normal operating conditions Vol is specified to be a a maximum of 0.4V regardless of the drive strength that the pin was configured. If the current draw falls ...