Toshiba Tecra M2-S519 Maintenance Manual - Page 26

1 Hardware Overview 1.2 System Unit Block Diagram ‰ 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 and internal keyboard ‰ PSC (Power Supply Controller) • One TMP87PM48U chip is used. • This controller controls the power sources. ‰ Clock Generator • One ICS950812CGT is used. • This device generates the system clock. 1-12 TECRA M2 Maintenance Manual (960-468)