Jetson Orin Nano PinMux Req. Initial State Column

Autonomous Machines Jetson & Embedded Systems Jetson Orin Nano
1

Hi Team,

We would like to understand the functionality outlined in the Orin Nano PinMux sheet for the Drive 0 and Drive 1 options specified in the ‘Req. Initial State’ column concerning input/output pin settings.

4

It is to set the pin initial state to output Low (0) or High (1).

5
  1. What is the sink and source current capability?
  2. Where will I find more information on “Req. Initial State” (drive 0/1) in technical reference manual. Wanted to know how initial state is achieved.
6

  1. The current is about +/-1mA.

  2. That is set via below setting in the output file of pinmux sheet.

    gpio@c2f0000 {
    gpio-init-names = “default”;
    gpio-init-0 = <&gpio_aon_default>;

     	gpio_aon_default: default {
 		gpio-input = <
 			TEGRA234_AON_GPIO(EE, 2)
 			TEGRA234_AON_GPIO(EE, 4)
 			>;
 		gpio-output-low = <
 			TEGRA234_AON_GPIO(CC, 0)
 			TEGRA234_AON_GPIO(CC, 2)
 			TEGRA234_AON_GPIO(CC, 3)
 			TEGRA234_AON_GPIO(AA, 4)
 			>;
 		gpio-output-high = <
 			TEGRA234_AON_GPIO(CC, 1)
 			TEGRA234_AON_GPIO(AA, 5)
 			TEGRA234_AON_GPIO(BB, 3)
 			>;
 	};
 };