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How does the OUTBUF enable pin work on the TRF3761?

Roland Sperlich
Prodigy 90 points

Hello,

How does the OUTBUF enable pin work on the TRF3761?

 

  • 0
    TI__Prodigy 90 points

    Hello,

    Pin 1 is PD_OUTBUF. From the EVM schematic and datasheet, this pin is a software selectable input.

    This means that if you are controlling the PD_OUTBUF using SPI (software), the pin will have no impact on actual performance.

    If you need VERY fast on/off speed, you can use the pin to control the enable. Most applications do not require this.

    By default, the software is configured such that the pin has no impact --- DB10 of register 0x0 is a "1". Important notice --- on the EVM, R37 (0ohm) will provide 3.3V from the SN74xx device causing the LED to be ON. Pulling this signal high or low with a jumper on W4 will have no impact on the output buffer (but the LED can be switched on/off).

    Thanks!