The SCH5127 is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller with an LPC interface, and includes Hardware Monitoring capabilities, enhanced Security features, Power Control logic and Motherboard Glue logic. Its hardware monitoring capability includes temperature, voltage, and fan speed monitoring. There are five analog inputs for monitoring external voltages as well as internal monitoring of the SIO’s VCC (emulated power well), VTR (signal power well), and VBAT power supplies, and has the ability to alert the system to out-of-limit conditions and automatically control the speeds of multiple fans. The Motherboard Glue logic includes various power management and system logic including generation of nRSMRST, SMBus isolation buffers, and buffered PCI (Peripheral Component Interconnect) reset outputs. The SCH5127 incorporates complete legacy Super I/O functionality including a floppy disk controller with SMSC's true CMOS 765B core and enhanced digital data separator. The true CMOS (Complimentary Metal-Oxide-Semiconductor) 765B core provides 100% compatibility with IBM PC/XTTM and PC/ATTM architectures and is software and register compatible with SMSC's proprietary 82077AA core.