The F81865 is the featured IO chip for Industrial PC system. Equipped with one IEEE 1284 parallel port, 6 UARTports with 9-bit protocol, KBC, Serial Peripheral Interface (SPI), SIR and one FDC. The F81865 integrated with hardware monitor, 7 sets of voltage sensor, 2 sets of creative auto-controlling fans and 2 temperature sensor pins for the accurate dual current type temperaturemeasurement for CPU thermal diode or external transistors 2N3906.
The F81865 provides flexible features for multi-directional application. For instance, supports 52 GPIO pins, IRQ sharing function designed in UART feature for particular usage and accurate current mode H/W monitor will be worth in measurement of temperature, the F81865 also integrated SPI interface. The SPI interface is for BIOS usage including bridge function. Others, the F81865 supports newest Intel PECI interfaces for new generational CPU temperature use. Furthermore, F81865 provides independent RTC function.
These features as above description will help you more and improve product value. Finally, the F81865 is powered by 3.3V voltage, with the LPC interface in the package of 128-PQFP.
- FEATURES
- PACKAGE
- ATTACHMENTS
- General Functions
- Comply withLPC 1.1
- Support ACPI3.0
- Provides one FDC, KBC and Parallel Port
- Provide 6 fully functional UART and 1 SIR
- 9-bit Protocol for UARTs
- Support IRQ Sharing function.
- H/W monitor functions
- SPI interface for BIOS
- RTC function
- Support PECI 1.0 interface
- 52 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
- Provide 6 fully functional UART
- 6 high-speed 16C550 compatible UART with 16-byte FIFOs
- Fully programmable serial-interface characteristics
- Baud rate supports 115.2K, max. up to 1.5M
- Support IRQ 3,4,5,6,7,8,9,10,11 sharing
- Provide 9-bits Function for Gaming Machine
- Support IrDA version 1.0 SIR protocol
- Parallel Port
- One PS/2 compatible bi-directional parallel port
- SupportEnhanced Parallel Port(EPP)Compatible with IEEE 1284 specification
- Support Extended Capabilities Port (ECP)Compatible with IEEE 1284
- Enhanced printer port back-drive current protection
- Keyboard Controller
- Compatibility with the 8042
- Support PS/2 mouse
- Support both interrupt and polling modes
- Hardware Gate A20 and Hardware Keyboard Reset
- Hardware Monitor Functions
- 2 dual current type (±3℃) thermal inputs for CPU thermal diode and 2N3906 transistors
- Temperature range -40℃~127℃
- 7 sets voltage monitoring(4external and 3internalpowers)
- High limit signal (PME#) for Vcore level
- 2 fan speed monitoring inputs
- 2 fan speed PWM/DC control outputs(support 3 wire and 4 wire fans)
- Issue PME# and OVT# hardware signals output
- Case intrusion detection circuit
- WATCHDOG# comparison of all monitored values
- Integrate Intel PECI1.0Interface
- Serial Peripheral Interface Compatible
- Support SPI bridge function for BIOS use
- RTC function
- RTC for time synchronizing.
- Provide 256 bytes RAM for CMOS setting save.
- 32.768K Crystal input
- Stand alone VBAT power input requirement
- GPIO Function
- Total 52 pins GPIO
- Interrupt status support
- All GPIO can be programmed.
- All GPIO pins default mode are OD level input.
- Supports High/Low Level/Pulse, Open Drain/Push Pull function selection
- Package
- 128-pin PQFP Green Package
Noted: Patented TW207103 TW207104 TW220442 US6788131 B1 TWI235231 TW237183 TWI263778