F71805F View Datasheet(PDF) - Feature Integration Technology Inc.

Part Name

Description

Manufacturer

F71805F

Super H/W Monitor + LPC IO

Feature Integration Technology Inc. 

F71805

1. General Description

The F71805 is the featured IO chip specifically for PC system. Equipped with one IEEE 1284

parallel port, two UART port and FDC, F71805 provides SIR and Flash ROM Interface. Integrated with

hardware monitor, F71805 supports 9 sets of voltage sensor and 4 voltage fault signal outputs, 3 sets of

creative auto-controlling fans and 3 temperature sensor pins for the accurate current type temp.

measurement for CPU thermal diode or external transistors 2N3906.

The F71805 provides flexible features for multi-directional application. For instance, supports 24

GPIO pins which include pulse/level mode selection, 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. The F71805 is powered by 3.3V voltage, with the LPC interface in the package of 128-QFP.

2. Features

General Functions

¾ Comply with LPC Spec. 1.0

¾ Supports 24 GPIO pins. One set of GPIO supports High/Low Level/Pulse selection.

¾ 48 MHz clock input

FDC

¾ Compatible with IBM PC AT disk drive systems

¾ Variable write pre-compensation with track selectable capability

¾ Support vertical recording format

¾ DMA enable logic

¾ 16-byte data FIFOs

¾ Support floppy disk drives and tape drives

¾ Detects all overrun and under run conditions

¾ Built-in address mark detection circuit to simplify the read electronics

¾ Completely compatible with industry standard 82077

¾ 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps data transfer rate

¾ Support 3-mode FDD, and its Win95/98/2K/XP driver

UART

¾ Two high-speed 16C550 compatible UART with 16-byte FIFOs

¾ Fully programmable serial-interface characteristics

3

Dec., 2006

V0.25P

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