Nano Datasheet pin description

CZ (controlled output impedance) pins are optimized for use in applications requiring tightly controlled output impedance. They are similar to ST pins except for changes in the drive strength circuitry and in the weak pull-ups/-downs. CZ pins are included on the VDDIO_SDMMC3 (Module SDMMC pins) power rail; also includes a CZ_COMP pin. Circuitry within the Jetson module continually matches the output impedance of the CZ pins to the on-board pull-up/-down resistors attached to the CZ_COMP pins.

DO I understand this correctly; “attached to the CZ_COMP pins”? Where is this?

The pins are on Tegra chip in module.