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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