F81803 is a featured IO chip for PC system, equipped with ATX_AT bundled pins, two UART ports, up to 128 bytes FIFO, providing 9-bit (multi-drop) function, one 80-port (multi-port with COM2), hardware keyboard controller . The UART supports legacy speeds up to 115.2K bps, as well as higher baud rates of 230K, 460K or 921K bps to support higher speed modems. The F81803 integrates a hardware monitor, 7 sets of voltage sensors, 2 sets of innovative automatic control fans, and 2 temperature sensor pins for accurate measurement of dual current mode temperature of CPU thermal diode or external transistor 2N3906. In addition to this, the F81803 supports the latest AMD TSI, Intel PECI 3.0 interface and SMBus for temperature sensing, and provides power sequencing controller functionality for AMD platforms.

The F81803 provides flexible functionality for multidirectional applications. For example, F81803 provides 15 GPIO pins (multi-pin), IRQ sharing function is also designed for specific use in UART function, accurate current mode H/W monitor is valuable in temperature measurement, 3 modes are available Fan speed control mechanism, including manual mode/stage auto mode/linear auto mode for user selection.

To save current consumption when the system is in a soft-off state, this is called a power saving feature. The power saving feature not only supports booting the system by pressing the power button, but also supports booting the system via the RI# wake-up event. When the system enters the S4/S5 state, the F81803 can cut off the VSB power rail, which provides power for the LAN chip, chipset, SIO, audio codec, DRAM, etc. When the system enters the S4/S5 state, the PC system can simulate a state similar to G3. In a G3-like state, the F81803 consumes only 5VA of the power rail. Two integrated control pins are used to turn the VSB rail on or off in a G3-like state. The switched-on VSB rails are provided to wake-up devices to enable low-power systems that support wake-up functionality.

These features described above will help you even more and increase the value of your product. F81803 is powered by 3.3V voltage, and the LPC interface is packaged in 64-TQFP (7mm*7mm).

Compliant with LPCSPEC. 1.1

Support DPM (Device Power Management), ACPI

SupportMDPowerSequenceController

Provides programmable 16/32/64/128 byte FIFO

Hardware Knowledge Base

H/Wmonitorfunctions

SupportMDTSI, MXM, INTELPEC3.0 interface

Provides MbusSlave and master functions

Provides 2 SMBusInterface settings.

15GPIOPinsforflexible application

Provide energy saving function (ComplyERPlot6.0)

SupportIntelDepsleepwell (DSW) Timing Sequence

Provides power button, RI#

ProvideATX emulation function

24/48mHzLock input

Packaged as 64TQFP, powered by 3. 3VCC

UART

Two high-speed 16C550/16C650/16C750/16C850/16C950 compatible programmable 16/32/64/128

byte FIFO

Baud rate up to 115. 2 km, up to 1 km. 5 meters

support sharing

Wake up

Provides automatic flow control

Provides multipoint (9-bit) capability for AMINGMACHINE

Supports programmable LegisterFortX/RXOnly, Mondemcontrol and FullyArtFunction

80PortInterface

Monitor 0x80 port and output value signal for 7-segment display.

HighNibbleAndowNibbleReOutputtendDerlieved1KHZ frequency.

80PortOutputaCom2 interface.

Provides MXM/PECI/TSI/T1/T2Value through port 80

Hardware monitor function

2 dual current type (±3℃) heat input heat input diode and N3906 transistor

Temperature 40℃~127℃

7 Set TurnegMonitoring (external power and internal power)

Voltage monitor supports over/under voltage protection (OVP/UVP)

High limit signal (PME#) for Vcorevel

2 variable speed monitoring inputs

2fanspeedPWM/DCcontroloutputs (supports 3-wire and 4-wire fans)

FANPWMOUTPUTFREQUENCE can be programmed for LCDBacklight adjustment

StageAutoTode (4Limitand5Stage) / Linear Auto Mode / Manual Mode

OVT# hardware signal output

Case Open Detection (assertiveapme#)

Watchdog compares the values of all monitors

PSIN# detection marking program (default)/2s/3s/4s (usage: enter the biological setting page

Under Quick Start Win8OS)

keyboard controller

The LPC interface supports serial interrupt channels 1,12.

Two 16-bit programmable LeadDressFullyCoders, default 0x60 and 0x64.

Two PS/2 ports are supported, one for a PS/2 mouse and the other for a fork board.

Programmable Compatibility Compatible with 8042.

Interrupt and polling modes are supported.

FastGateA20 and hardware keyboard reset.

Power saving controller

ACPITIMING and Power Control

wake up support

G3likeTimingControl

Completely correct. 0

Built-in software boot function for WO control port with VSB power control.

Events PIO05~06, GPIO16, GPIO44~47, RI#pins

GPIOFunction

15 pints total

GPIO0xCOLDBEREBTY3VA/VBATVIA registry setting

GPIO05, GPIO06, GPIO16supportSMIeventviaPME#orSIRQ

scan code

AllGPIO supports input/output control, output data control and digital input status.

Support high/low level/pulse, open drain/push-pull function selection

watchdog timer

Time Resolution Minutes/Second

Up to 256 minutes 256 seconds

Output signal via WDTRST#/PWOK

Wdtcould WakeupViapme#, PSOUT#

Provide HardwareStrappingPin and autoreload function

Integrated Intelligence 3.0 Specifications.

Integrated IntelCoogarPointTiming/DSWTiming

SupportMDPowerSequenceController

IntelBlockRead/WriteSBusInterface

ProvideATXEmulatesATFunction

AMDTSI/MXM/I2C interface

Interface port supporting hardware demonstrator 0/S3/S5

I2CSlaveFoultAddress5CH

Supportmaster interface to get thermal data and MXM module

Provide 2 sets of SMBusfortsi/MXM/I2C interface.

AMDTSI/MXM/I2C interface can independently select 2 groups of pins A pin 28 (GPIO06/TSI_SCL/I2C_SCL),

pin29 (PECI/TSI_SDA/I2C_SDA); pin34 (MDATA/TSI_SDA/I2C_SDA) and pin35 (MCLK/TSI_SCL/I2C_SCL).

F81803U

F81803U-I

TQFP64 (7*7)