KB3910 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

KB3910

Keyboard Controller

Unspecified 

KB3920 Keyboard Controller Datasheet

Ø Internal Keyboard Encoder (IKB)

n 18x8 keyboard scan matrix

n Optimized hardware for firmware processing

n Support W2K Internet / multimedia keys

n Support hot-key events

n Ghost key phenomenon cancellation

Ø Embedded Controller (EC)

n Five EC Standard Commands can be processed by hardware

n ACPI Specification 2.0 compliant

n each hardware command can be optionally switched to be processed by

firmware

n Programmable EC I/O port addressing (default 62h/66h)

Ø SMBus Host Controller (SMBUS)

n 2 SMBus Interfaces multiplexed with one internal SMBus host controller

n SMBus Specification 2.0 compliant

n Wake-up from low-power modes

Ø Digital To Analog Converter (DAC)

n Four built-in DACs with 8-bit resolution

n The DAC pins can be alternatively configured as General Purpose Outputs

(GPOs)

Ø Analog To Digital Converter (ADC)

n Four built-in ADCs with 8-bit resolution

n The ADC pins can be alternatively configured as General Purpose Inputs (GPIs)

Ø Pulse Width Modulator (PWM)

n Four built-in PWMs (2 are FANPWM)

n Selectable clock sources: 1MHz/64KHz/4KHz/256Hz

n Configurable cycle time (up to 1 sec) and duty cycle

Ø Watchdog Timer (WDT)

n 32.768KHz input clock with 20-bit time scale

n 8-bit watchdog timer interrupt and reset setting

Copyright©2006, ENE Technology Inc.

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