The F71862 is the featured IO chip for PC system. Equipped with one IEEE 1284 Parallel Port,two UART Ports, Hardware Keyboard Controller, Serial Peripheral Interface (SPI), SIR and one FDC. The F71862 integrated with hardware monitor, 9 sets of voltage sensor, 3 sets of creative auto-controlling fans and 3 temperature sensor pins for the accurate dual current type temp. measurement for CPU thermal diode or external transistors 2N3906. Others, the F71862 supports newest AMDSI and Intel PECI interfaces for temperature sensing.
The F71862 provides flexible features for multi-directional application. For instance, supports 4-In and 4-Out pins CPU VID controlling with offset implement., provides 30 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/Stage Auto Mode/Linear Auto Mode for users’ selection.
The F71862 also integrated SPI interface. The SPI interface is for BIOS usage including bridge function and back up function. User can implement BIOS data in second flash to boot system when primary BIOS error. These features as above description will help you more and improve product value. Finally, the F71862 is powered by 3.3V voltage, with the LPC interface in the green package of 128-PQFP.
- FEATURES
- PACKAGE
- ATTACHMENTS
- General Functions
- Comply with LPC Spec. 1.0
- Support DPM (Device Power Management), ACPI
- 4-VIDIN and 4-VIDOUT for Vcore use.
- Provides one FDC, two UARTs, Hardware KBC and Parallel Port
- H/W monitor functions
- SPI interface for BIOS usage
- Support AMD SID/SIC interface and Intel PECI interface
- 30 GPIO Pins for flexible application
- 24/48 MHz clock input
- Packaged in 128-PQFP and powered by 3.3VCC
- FDC
- Compatible with IBM PC AT disk drive systems
- Variable write pre-compensation with track selectable capability
- Support vertical recording format
- DMA enable logic
- 16-byte data FIFOs
- Support floppy disk drives and tape drives
- Detects all overrun and under run conditions
- Built-in address mark detection circuit to simplify the read electronics
- Completely compatible with industry standard 82077
- 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate
- UART
- Two high-speed 16C550 compatible UART with 16-byte FIFOs
- Fully programmable serial-interface characteristics
- Baud rate up to 115.2K
- Support IRQ sharing
- INFRARED
- Support IrDA version 1.0 SIR protocol with maximum baud rate up to 115.2K bps
- Parallel Port
- One PS/2 compatible bi-directional parallel port
- Support Enhanced Parallel Port (EPP) Compatible with IEEE 1284 specification
- Support Extended Capabilities Port (ECP) Compatible with IEEE 1284 specification
- Enhanced printer port back-drive current protection
- Keyboard Controller
- LPC interface support serial interrupt channel 1, 12.
- Two 16bit Programmable Address fully decoder, default 0x60 and 0x64.
- Support two PS/2 interface, one for PS/2 mouse and the other for keyboard.
- Keyboard’s scan code support set1, set2.
- Programmable compatibility with the 8042.
- Support both interrupt and polling modes.
- Fast Gate A20 and Hardware Keyboard Reset.
- Hardware Monitor Functions
- 3 dual current type (±3℃) thermal inputs for CPU thermal diode and 2N3906 transistors
- Temperature range -40℃~127℃
- 9 sets voltage monitoring (6 external and 3 internal powers)
- High limit signal (PME#) for Vcore level
- 3 fan speed monitoring inputs
- 3 fan speed PWM/DC control outputs(support 3 wire and 4 wire fans)
- Stage auto mode ( 2-Limit and 3-Stage)/Linear auto mode/Manual mode
- Issue PME# and OVT# hardware signals output
- Case intrusion detection circuit
- WATCHDOG comparison of all monitored values
- Serial Peripheral Interface Compatible
- Support SPI Bridge Function for BIOS use
- Support Back Up BIOS function
- Integrate AMD SI Interface
- Integrate Intel PECI Interface
- Package
- 128-pin PQFP Green Package