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The NCT6776F is a member of Nuvoton’s Super I/O product line. The NCT6776F monitors several critical parameters in PC hardware, including power supply voltages, fan speeds, and temperatures.
In terms of temperature monitoring, the NCT6776F adopts the Current Mode (dual current source) and thermistor sensor approach. The NCT6776F also supports the Smart Fan control system, including SMART FANTM I and SMART FANTM IV, which makes the system more stable and user-friendly.
The NCT6776F supports four – 360K, 720K, 1.2M, 1.44M, or 2.88M – disk drive types and data transfer rates of 250 Kb/s, 300 Kb/s, 500 Kb/s, 1 Mb/s, and 2 Mb/s. The disk drive adapter supports the functions of floppy disk drive controller (compatible with the industry standard 82077/ 765), data separator, write pre-compensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt and DMA logic. Such a wide range of functions integrated into one NCT6776F greatly reduce the number of required components to interface with floppy disk drives.
The NCT6776F provides two high-speed serial communication port (UART), which includes a 16-byte send/receive FIFO, a programmable baud rate generator, complete modem-control capability, and a processor interrupt system. The UART supports legacy speeds up to 115.2K bps as well as even higher baud rates of 230K, 460K, or 921K bps to support higher speed modems.
The NCT6776F supports the PC-compatible printer port (SPP), the bi-directional printer port (BPP), the enhanced parallel port (EPP) and the extended capabilities port (ECP). The NCT6776F supports keyboard and mouse interface which is 8042-based keyboard controller.
The NCT6776F provides flexible I/O control functions through a set of general purpose I/O (GPIO) ports. These GPIO ports may serve as simple I/O ports or may be individually configured to provide alternative functions.
The NCT6776F supports the Intel® PECI (Platform Environment Control Interface) and AMD® SB-TSI interface. The NCT6776F supports separated VID input and output pins for Vcore voltage adjustment. It also supports AMD® CPU power on sequence, and it also supports Intel® Deep Sleep Well glue logic to help customers to reduce the external circuits needed while using Deep Sleep Well function.
The NCT6776F supports to decode port 80 diagnostic messages on the LPC bus. This could help on system power on debugging. It also supports two-colour LED control to indicate system power states. The NCT6776F supports Consumer IR function for remote control purpose. It also supports Advanced Power Saving function to further reduce the power consumption while the system is at S5 state.
The configuration registers inside the NCT6776F support mode selection, function enable and disable, and power-down selection. Furthermore, the configurable PnP features are compatible with the plug-and-play feature in Windows, making the allocation of the system resources more efficient than ever.