Toshiba tecra m1 manual Kbc

1.2 System Unit Block Diagram 1 Hardware Overview

VGA Controller

One Trident XP4-MCM chip is used. The video controller incorporates graphics accelerator, video accelerator.

•Internal VRAM, 32MB DDR 250MHz (64MB is also supported.)

•Connected to AGP bus R2.0

•LCD Interface LVDS 2ch

•TV Encoder: Tvxpress2

•DVI Supported by Dock

Sound Controller

•One AC'97Codec AD1981A chip and AC-Link controller embedded in ICH4-M

•SW sound

EC/KBC (Embedded Controller/Keyboard Controller)

•One Mitsubishi M306K9FCLRP micon chip functions as both EC and KBC.

•EC

This controller controls the following functions:

–Power supply sequence

–Thermal conditions

–LEDs

–Beep

–Device ON/OFF

–Fan speed

–Universal I/O port

–Docker Docking Sequence

–Battery capacity check

–Forced reset

–Flash rewriting

–EC interface

–I2C communication

–EC access

–Slim Select Bay Control

•KBC

This controller has the following functions:

–Scan controller to check status of keyboard matrix

–Interface controller between the keyboard scan controller and the system

–Control of switching and simultaneous operation of the accupoint/external PS/2 mouse and of the internal keyboard/external PS/2 keyboard

TECRA M1 Maintenance Manual (960-436) 1-13