Toshiba Tecra M2V Maintenance Manual page 26

1 Hardware Overview
EC/KBC (Embedded Controller/Keyboard Controller)
•
One Mitsubishi M306K9FCLRP microcomputer 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
1.2 System Unit Block Diagram
TECRA M2V Maintenance Manual (960-476)