Toshiba M1 manual ∙ Kbc

1 Hardware Overview 1.2 System Unit Block Diagram

qVGA 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

qSound Controller

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

∙SW sound

qEC/KBC (Embedded Controller/Keyboard Controller)

∙One Mitsubishi M306K 9FCLRP 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

1-14 TECRA M1 Maintenance Manual (960-436)