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AFE4950: AFE4950 Some issue discuss

Part Number: AFE4950


Tool/software:

hi Sir 

need your help, thanks

  1. The PD data converted with IN_TIA2 is smaller (larger difference) than with IN_TIA1. Is this normal?
  2. I want to use TIA2's RF adjustment to approach TIA1, but setting it to 2 is too much. Are there other ways to adjust it?
  3. The FIFO has 256 registers. If no data is read from, will the first register be overwritten when the FIFO is full?
  4. I currently have 16 phase combinations configured. Each phase performs two data conversions (TIA1 and TIA2). Each cycle writes 32 data entries to the FIFO register. These 32 entries are expected to be repeatedly written to the 256 storage areas. Even if overwritten, they should be written to the corresponding locations. However, after a period of time, the data I read out seems to be missing a data entry. The data I read appears to be starting from the second entry. Is this reading method abnormal? Or do I need to clear the FIFO data before reading?