Maintenance Manual

1.2 System Unit Components 1 Hardware Overview
Satellite/Satellite Pro/L650/L655 Maintenance Manual 15
y Audio Director for Headphone and Internal Speakers Redirection
y Smart Audio GUI - advanced audio control
 KBC/EC (Keyboard Controller/Embedded Controller)
A KBC WINBOND NPCE781LA0DX 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 EEPROM
y 24C02 equivalent (128 words x 16 bits, I2C interface) integrated in battery pack
− Storing records of battery use
 Clock Generator
y ICS ICS9LPRS3197
− Generating the clock signal required for the system
 Modem Controller
Built-in MDC card with Askey, Foxconn or Lite-On. Functions of modem controller:
y Digital signal conductor protection
y Ring wake-up support
y Azalia interface