●GENERAL DESCRIPTION
●The W83627HF and W83627F are evolving product fromWinbond"s most popular I/O family. They
●feature a whole new interface, namely LPC（Low Pin Count）interface, which will be supported in the next generation Intel chip-set. This interface as its name suggests is to provide an economical implementation of I/O"s interface with lower pin countand still maintains equivalent performance as its ISA interface counterpart. Approximately 40 pin counts are saved in LPC I/O comparing to ISA implementation. With this additional freedom, we can implement more devices on a single chip as demonstrated in W83627F/HF"s integration of Game Port and MIDI Port.It is fully transparentin terms of software which means no BIOS or device driver update is needed except chip-specific configuration.
●FEATURES
●General
●• Meet LPC Spec. 1.0
●•Support LDRQ#（LPC DMA）, SERIRQ （serial IRQ）
●• Include all the features of Winbond I/O W83977TF and W83977EF
●• 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 bps for 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
●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
●Keyboard Controller
●• 8042 based with optional F/W from AMIKKEYTM -2,or customer code with 2K bytes of program
●mable ROM, and 256 bytes of RAM
●• Asynchronous Access to Two Data Registers and One status Register
●• Software compatibility with the 8042
●• Support PS/2 mouse
●• Support port 92
●• Support both interrupt and polling modes
●• Fast Gate A20 and Hardware Keyboard Reset
●• 8 Bit Timer/ Counter
●• Support binary and BCD arithmetic
●• 6 MHz, 8 MHz, 12 MHz, or 16 MHz operating frequency
●Game Port
●• Support two separate Joysticks
●• Support every Joystick two axis （X,Y）and two button （A,B）controllers
●MIDI Port
●• The baud rate is 31.25 Kbaud
●• 16-byte input FIFO
●• 16-byte output FIFO
●General Purpose I/O Ports
●• 22 programmable general purpose I/O ports
●• General purpose I/O ports can serve as simple I/O ports, interrupt steering inputs, watch dog
●timer output, power LED output, infrared I/O pins, KBC control I/O pins, suspend LED output,
●RSMRST# signal, PWROK signal, Beep output
●• Functional in power down mode （GP1 only） OnNow Functions
●• Keyboard Wake-Up by programmable keys
●• Mouse Wake-Up by programmable buttons
●• CIR Wake-Up by programmable keys
●• On Now Wake-Up from all of the ACPI sleeping states （S1-S5）
●Hardware Monitor Functions （Only for W83627HF）
●• 5 VID input pins for CPU Vcore identification
●• 3 thermal inputs from optionally remote thermistors or 2N3904 transistors or PentiumTM II
●（Deschutes）thermal diode output
●• 7 positive voltage inputs （typical for +12V, -12V, +5V, -5V, +3.3V, VcoreA, VcoreB）
●• 2 intrinsic voltage monitoring （typical for Vbat, +5VSB）
●• 3 fan speed monitoring inputs
●• 2 fan speed control
●• Build in Case open detection circuit
●• WATCHDOG comparison of all monitored values
●• Programmable hysteresis and setting points for all monitored items
●• Over temperature indicate output
●• Automatic Power On voltage detection Beep
●• Issue SMI#, IRQ, OVT# to activate system protection
●•Intel LDCMTM / Acer ADMTM compatible
●Package
●• 128-pin PQFP
