beautypg.com

Toshiba M40 User Manual

Page 26

background image

1 Hardware Overview

1.2 System Unit Components

12

EQUIUM M40/M45/Satellite M40/M45 Maintenance Manual

‰ KBC/EC (Keyboard Controller/Embedded Controller)

A single KBC 1100L chip is used to serve as KBC/ EC and Super IO.

y KBC

− Scan controller function

− Interface controller function

y EC

− Power supply sequence control

− Overheat shutdown support

− LED control

− Beep control

− Device ON/OFF

− Cooling fan speed control

− Universal I/O port

− Battery capacity check

− Flash memory reprogramming function

− EC access interface

− I2C communication control


‰ Battery EE PROM

y 24C02 equivalent (128 words x 16 bits, I2C interface) integrated in the battery pack

− Storing records of battery use

‰ Clock Generator

y ICS951413

− Generating the clock signal required for the system

‰ Modem Controller

y Built-in MDC card with askey

y Functions of the modem controller:

− Digital signal conductor protection

− Ring wake-up support

− Communication codes supported:

For data communication:

V.90(China)/V.92 data rates: 28kbps/56kbps