The host interface bridges the chip to the system’s PCH (Platform Controller Hub) via the LPC bus. The datasheet specifies the LCLK (33 MHz) and the 4-bit data lines (LAD0-3). This is where the BIOS sends commands to configure the Super I/O.
The IT8995E-128 is characterized by its integration of essential system management tasks into a single, compact logic IC. ITE Tech. Inc. it8995e 128 datasheet