Hello Luciano,
The SDHC device does not support SD_CARD_DETECT pin. Therefore the SDHC_LDD component cannot provide selection of this pin. But you can use an example of usage of the SD_CARD_DETECT pin, see the Typical Usage section of the SDHC_LDD component help.
You can also use a SDHC demo project that is available in KDS 2.0.0 in folder KDS_2.0.0\eclipse\ProcessorExpert\Projects\Kinetis\ProcessorExpert\TWR-K70FN1M\SDHC.
Best Regards,
Marek Neuzil