F81866A Datasheet, PDF (11/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

F81866A
1. General Description
The F81866A is the featured IO chip for Industrial PC system. Equipped with one IEEE
1284 parallel port, 6 UART ports with Multi drop function (9-bit protocol), SIR, ACPI
management function and FDC. Each UART provides 16/32/64/128 bytes FIFO. The UART
supports legacy speeds up to 115.2K bps as well as even higher baud rates of 230K, 460K,
or 921K bps to support higher speed modems. The F81866A supports the enhanced parallel
port (EPP) and the extended capabilities port (ECP). The F81866A supports keyboard and
mouse interface which is 8042-based keyboard controller. The F81866A integrated with
hardware monitor, 7 sets of voltage sensor, 3 sets of creative auto-controlling smart fans
and 2 temperature sensor pins for the accurate dual current type temperature measurement
for CPU thermal diode or external transistors 2N3906 and one local temperature.
The F81866A provides flexible features for multi-directional application. For instance,
supports 72 GPIO pins, IRQ sharing function designed in UART feature for particular usage
and accurate current mode H/W monitor will be worth in measurement of temperature.
Others, the F81866A supports newest Intel PECI 3.0 interfaces for new generational CPU
temperature usage, INTEL IBX PEAK, I2C and AMD TSI for temperature reading.
In order to save the current consumption when the system is in the soft off state which
is so called power saving function. The power saving function supports the system boot-on
not only by pressing the power button but also by the wake-up events via GPIO0x, GPIO1x,
RI1#, and RI2#. When the system enters the S3/S4/S5 state, F81866A can cut off the VSB
power rail which supplies power source to the devices like the LAN chip, the chipset, the
SIO, the audio codec, DRAM, and etc. The PC system can be emulated to G3-like state
when the system enters S3/S4/S5 states. At the G3-like state, the F81866A consumes
5VSB power rail only. The integrated two control pins are utilized to turn on or off VSB
power rail in the G3-like status. The turned on VSB rail is supplied to a wake up device to
fulfill a low power consumption system which supports a wake up function.
These features as above description will help you more and improve the product value.
The F81866A is in the package of 128-LQFP. (14mm*14mm)
2. Features
General Functions
¾ Comply with LPC 1.1
¾ Support ACPI 3.0
¾ Support WDT Reset Function
¾ Support WDT wake up while ERP function is enabled
¾ Provide 4 sets of GPIO (GPIO0x/1x/5x/8x) SMI event via PME# or SIRQ
11
Jan, 2012
V0. 12P