GENERAL DESCRIPTION
The W83697HF is evolving product from Winbond's most popular I/O family. They feature a whole new interface, namely LPC (Low Pin Count) interface, which will be supported in the new generation chip-set. This interface as its name suggests is to provide an economical implementation of I/O's interface with lower pin count and still maintains equivalent performance as its ISA interface counterpart. Approximately 40 pin counts are saved in LPC I/O comparing to ISA implementation.

FEATURES
General
· Meet LPC Spec. 1.01
· Support LDRQ#(LPC DMA), SERIRQ (serial IRQ)
· Include all the features of Winbond I/O W83877TF
· Integrate Hardware Monitor functions
· Compliant with Microsoft PC98/PC99 Hardware Design Guide
· Support DPM (Device Power Management), ACPI
· Programmable configuration settings
· Single 24 or 48 MHz clock input
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 underrun conditions
· Built-in address mark detection circuit to simplify the read electronics
· FDD anti-virus functions with software write protect and FDD write enable signal (write data signal was forced to be inactive)
· Support up to four 3.5-inch or 5.25-inch floppy disk drives
· Completely compatible with industry standard 82077
· 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate
· Support 3-mode FDD, and its Win95/98 driver
UART
· Two high-speed 16550 compatible UARTs with 16-byte send/receive FIFOs
· MIDI compatible
· Fully programmable serial-interface characteristics:
   --- 5, 6, 7 or 8-bit characters
   --- Even, odd or no parity bit generation/detection
   --- 1, 1.5 or 2 stop bits generation
· Internal diagnostic capabilities:
   --- Loop-back controls for communications link fault isolation
   --- Break, parity, overrun, framing error simulation
· Programmable baud generator allows division of 1.8461 MHz and 24 MHz by 1 to (216-1)
· Maximum baud rate up to 921k bpsfor 14.769 MHz and 1.5M bps for 24 MHz
Infrared
· Support IrDA version 1.0 SIR protocol with maximum baud rate up to 115.2K bps
· Support SHARP ASK-IR protocol with maximum baud rate up to 57,600 bps
· Support Consumer IR with Wake-Up function.
Parallel Port
· Compatible with IBM parallel port
· Support 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
· Extension FDD mode supports disk drive B; and Extension 2FDD mode supports disk drives A and B through parallel port
· Enhanced printer port back-drive current protection
Game Port
· Support two separate Joysticks
· Support every Joystick two axes (X,Y) and two buttons (S1,S2) controllers
MIDI Port
· The baud rate is 31.25 Kbaud
· 16-byte input FIFO
· 16-byte output FIFO