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LMX2531: MICROWIRE DO pin

Part Number: LMX2531

Hello,

 

The datasheet says “1.8-V MICROWIRE Support”.

But there is no MICROWIRE DO pin.

LMX2531 does not have DO pin?

Users can not read register contents?

 

Best regards,

 

K.Hirano

  • Hello Kazuhiko,

    The LMX2531 has three mircowire pins CLK, DATA and LE. The functioning of these pins is documented in "8.3.8 Serial Data Timing Requirements" section of the datasheet. 

    If you want to see if you can write to the part, I recommend powering down the device / powering it back up.

    Ftest/LD can be monitored for checking PLL lock or setting the pin to a logical high or low state to check if writing to registers is working.

    "Table 11. Ftest/LD Pin Functions" section details the functions of this pin.

    Thanks,

    Vibhu