PC87372 Datasheet | National Semiconductor

Description The National PC87372 Advanced I/O product is a member of the PC8737x Super I/O family. All PC8737x devices are highly integrated and are pin and software patible, thus providing drop-in interchangeability and enabling a variety of assembly options using only a single motherboard and BIOS. PC87372 integration allows for a smaller system board size and saves on total system cost. The PC87372 includes legacy Super I/O functions, system glue functions, fan monitoring and control, monly used functions such as GPIO, and ACPI-pliant Power Management support. The PC87372 integrates miscellaneous analog and digital system glue functions to reduce the number of discrete ponents required. The host municates with the functions integrated in the PC87372 device through an LPC Bus Interface. The PC87372 Legacy functions are: a serial port (UART), a fully pliant IEEE 1284 Parallel Port, a Floppy Disk Controller (FDC) and a Keyboard/Mouse Controller (KBC). The Fan Speed Monitor (FSM) module allows the system to monitor two fans. Semiconductor® The PC87372 extended wake-up support plements the ACPI controller in the chipset. The System Wake-Up Control (SWC) module, powered by VSB3, supports a flexible wakeup mechanism. There are 13 General-Purpose Input/Output (GPIO) ports; these allow system control and wake-up on system events. Outstanding Features s Legacy modules: Parallel Port, Floppy Disk Controller (FDC), Serial Port and a Keyboard and Mouse Controller (KBC) Glue functions to plement the South Bridge functionality Fan Speed monitoring of two fans VSB3-powered Power Management with 20 wake-up sources Controls three LED indicators 13 GPIO ports with a variety of wake-up options LPC interface, based on Intel’s LPC Interface Specification Revision 1.0, September 29th, 1997 PC01 Revision 1.0 and Advanced Configuration and Power Interface (ACPI) Specification Revision 2.0 pliant 128-pin PQFP package s s s s s s s s Block Diagram 14.31818 MHz Serial Interface...