Features: · 1.44MB Floppy Disk Controller
--- Support four 360K,720K,1.2M,1.44M floppy disk drives
--- Data Transfer Rate 250Kb/s,300Kb/s,500Kb/s
--- Single 24Mhz crystal input
--- FDD anti-virus function with software write protect and FDD write enable signal,
write data signal force inactive
· Serial Ports
--- Two high speed 16550 UART with 16 byte FIFO
--- Programmable baud rate generator
--- Modem Control Circuitry
--- Support IrDA(HPSIR) and Amplitude Shift Keyed IR(ASKIR) Infrared communication
--- MIDI compatible
· Parallel Port
--- Support Standard Parallel Port(SPP),Enhanced Parallel Port(EPP),
Enhanced Capability Port(ECP)
--- Joystick mode supports joystick through parallel port
--- Extension FDD mode support disk drive B through parallel port
--- Extension Adapter Mode support pocket devices through parallel port
--- Extension 2FDD mode support disk drive A and B through parallel port
--- Compatible with IBM Parallel Port
--- Support parallel port with bi-directional lines
· IDE Interface
--- Support two embedded hard disk drives(IDE AT BUS)
· Game Port Supported
· Based on pinout of W83777/787F
· Two General Purpose I/O pins
· 100 PQFPPinout
SpecificationsPower Supply Voltage..........................................................................-0.3 to 7.0V
Input Voltage....................................................................................... VSS-0.3 to VDD+0.3V
Operating Temperature........................................................................ 0° C to+70° C
Storage Temperature...........................................................................-55° C to+150° CDescriptionThe W83787IF is a derivative product of W83787F with one of UARTs support HPSIR and ASKIR.
The W83787IF integrates a disk drive adapter ,two 16550 compatible UARTs, and one parallel port with EPP mode, ECP mode, and joystick mode.
The disk drive adapter functions of the W83787IF is sames as W83787F which including a floppy disk drive controller compatible with the industry standard 765, data separator, write precompensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, and interrupt and DMA logic. The wide range of functions integrated onto the W83787IF greatly reduces the number of components required for interfacing with floppy disk drives. The W83787IF supports four 360K, 720K, 1.2M, 1.44M disk drives and data transfer rates of 250Kb/S, 300Kb/S, 500Kb/S.
There are two high-speed serial communication ports (UARTs) on the W83787IF, one of them support serial infrared communication. The UARTs include 16-byte send/receive FIFOs, a programmable baud rate generator, complete modem control capability, and a processor interrupt system.
The W83787IF supports three optional PC-compatible printer ports: 378h, 278h and 3BCh. Additional bi-directional I/O capability is available by hardware control or software programming. The parallel port also supports the Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP).
The W83787IF supports two embedded hard disk drive (AT bus) interfaces and a game port with decoded read/write output.
The W83787IF's Extension FDD Mode and Extension 2FDD Mode allow one or two external floppydisk drives to be connected to the computer through the printer interface pins in notebook computer applications.
The Extension Adapter Mode of the W83787IF allows pocket devices to be installed through the printer interface pins in notebook computer applications according to a protocol set by Winbond, but with upgraded performance.
The JOYSTICK mode allows a joystick to be connected to a parallel port with a signal switching cable.
The configuration register supports address selection, mode selection, function enable/disable, and power down function selection.
W83787IF Data Sheet
