39.5.1 I/O Lines
The LVDS outputs are multiplexed with digital functions on the I/O lines. If the LVDS interface is not used by the application (LVDSC_CR.SER_EN), the associated I/O lines can be used for other purposes (refer to section "Peripheral Signal Multiplexing on I/O Lines").
The I/O line LVDS_A3P/3N can be used by digital peripherals when the LVDSC is enabled and configured for 18-bit pixel data (LVDSC_CFGR.LCDC_PIXSIZE=1).
Note that if the LVDS interface is used, the I/O lines are associated to it automatically without any PIO configuration.