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DP83822I: How to use strap pins(LED_0, LED_1).

Yuta Furuki
Prodigy 20 points
Part Number: DP83822I


Tool/software:

Hi team,


I want LED_0 to configure as MODE4, LED_1 as MODE1.
Then connect LEDs and parallel pullup or pulldown resistors with each pins.

I have two questions.

#1:
In this case, does strap pin require the RP?
Does strap pin require only D1 and RCL?

#2:
In this case, can I decide the value of pullup or pulldown resistors by relations RCL and electrical characteristics of D1.

Sincerely,

Yuta Furuki

  • +1
    TI__Mastermind 19621 points

    Hi Yuta,

    Thank you for submitting your query. 

    LED_0 is default Mode 4, I can see how you might think that RP is not necessary, but please include it to ensure the LED gets strapped into the intended mode.

    LED_1 is default Mode 1 and the same logic follows, include RP to ground.

    If you want to decide the value of RP, please follow the voltage levels provided in Table 8-9. 4-Level Strap Voltage Ratios

    Regards,

    Alvaro