Toshiba M10 manual Hardware Overview System Unit Block Diagram

1 Hardware Overview 1.2 System Unit Block Diagram

KBC/EC (Keyboard Controller/Embedded Controller)

•One M306K9FCLRP chip functions as both KBC and EC.

•KBC has the following functions:

–Scan controller to check status of keyboard matrix

–Interface controller between the keyboard scan controller and the system

•EC has the following functions:

–Power supply sequence control

–System I/F

–Thermal conditions control

–Flash rewriting

PSC (Power Supply Controller)

•One TMP87PM48U chip is used.

•This controller controls the power sources.

Super I/O

•One SMSC LPC47n227 is used.

•This gate array has the following functions and components.

–Serial Port (NS16C550 Compatible UART)

–Infrared Communications Controller (IrDA v1.2 Support)

–Parallel Port (PS/2 Compatible Bidrectional and IEEE 1284 Compliant EPP/ECP)

IEEE 1394 Link Layer /Physical Layer Controller

•One TSB43AB22 is used.

•This controller provides the IEEE 1394 link/physical function, and is compatible with serial bus data rates of 100Mbits/s, 200Mbits/s and 400Mbits/s.

PC Card Power Switch

•One MIC2563A is used.

•The MIC2563A handles the power supply for the PC Card slot.

SD Card Power Switch

•One MAX1607ESA is used.

•The MAX1607ESA is a current-limited switch, which has several safety features to ensure that the SD Card Slot is protected.

USB Power Switch

•One MAX1922ESA is used.

•The MAX1922ESA is a current-limited switch for two USB ports, which has several safety features to ensure that the USB port is protected.

1-12 Satellite Pro M10 Series Maintenance Manual (960-431)