F71882

The F71882 is the featured IO chip for PC system. Equipped with one IEEE 1284 parallel port, two UART ports, KBC, Serial Peripheral Interface (SPI), SIR and one FDC. The F71882 integrated with hardware monitor, 9 sets of voltage sensor, 4 sets of creative auto-controlling fans and 4 temperature sensor pins for the accurate dual current type temp. measurement for CPU thermal diode or external transistors 2N3906.

The F71882 provides flexible features for multi-directional application. For instance, supports 6/12 pins CPU VID controlling for VRM9.0/10.0/11* and CPU VID OTF (On The Fly), provides 32 GPIO pins (multi-pin), IRQ sharing function also designed in UART feature for particular usage and accurate current mode H/W monitor will be worth in measurement of temperature, provides 3 modes fan speed control mechanism included Manual Mode/Speed Mode/Temperature Mode for users' selection Additionally, provides easy voltage sensor input (VSI) function for sensing Vcore voltage, then output (VSO) the offset voltage for over/under voltage change use.

Further, the F71882 supports an automatic/dynamic over-voltage function for application of over-clocking or under-clocking. This function provides a pin by external trigger signal to improve the CPU's performance by voltage offset automatically when system is going to run over-clocking or under-clocking. Due to achieve this action, suggest F75133S Loading Gauge chip can be the part which detects system/CPU loading to decide when issues the over-clocking/under-clocking signal for system executing. Briefly, user can gain more features on motherboard by these two parts which improve performance and efficiency.

The F71882 also integrated SPI interface. The SPI interface is for BIOS usage including bridge function and back up function. Others, the F71882 supports newest AMDSI and Intel PECI/SST interfaces for temperature use. These features as above description will help you more and improve product value. Finally, the F71882 is powered by 3.3V voltage, with the LPC interface in the package of 128-PQFP.