ON/OFF external TCXO in sniff mode

[EMont.1]

Hello,

I'm working on extrem low power radio with S2-LP transceiver. To obtain a very low consumption in rx mode i puted it in sniff mode. My design has external TCXO reference and when i left it always on all work fine, but if i set gpio to switch off/on TCXO, gpio doesn't work and TCXO stay off.

Please, somebody has some idea? Thanks