KB3930 데이터 시트보기 (PDF) - Unspecified

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KB3930

Keyboard Controller

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KB3930 Keyboard Controller Datasheet

1.2 Features

LPC Low Pin Count Interface

SIRQ supporting IRQ1, IRQ12, SCI or SMI# interrupt and one programmable

IRQ provided.

I/O Address Decoding:

ƒ Legacy KBC I/O port 60h/64h

ƒ Programmable EC I/O port, 62h/66h(recommend)

ƒ I/O port 68h/6Ch (sideband)

ƒ 2 Programmable 4-byte Index-I/O ports to access internal EC registers.

ƒ 1 Programmable extended (debug) port I/O.

Memory Decoding:

ƒ Firmware Hub decode

ƒ LPC memory decode

Compatible with LPC specification v1.1

Support LPC interface re-direction to IKB for debugging

X-bus Bus Interface (XBI) : Flash Interface

SPI flash is supported, size up to 4MB.

SPI frequency supports 33/45/66MHz.

New SPI command (dual read) to enhance the performance.

The 64KB code memory can be mapped into system memory by one 16KB and

one 48KB programmable pages independently.

Support SPI flash in-system-programming via IKB pins.

Enhanced pre-fetch mechanism.

8051 Microprocessor

Compatible with industrial 8051 instructions with 3 cycles.

8051 runs at 8/16/22 MHz, programmable.

256 bytes internal RAM and 4KB tight-coupled SRAM.

24 extended interrupt sources.

Two 16-bit timers.

Full duplex UART integrated.

Supports idle and stop mode.

Enhanced ENE debug interface.

Support Tx/Rx re-direction to IKB for debugging

Copyright©2010, ENE Technology Inc.

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