Toshiba tecra m1 manual Hardware Overview System Unit Block Diagram

1 Hardware Overview 1.2 System Unit Block Diagram

–Internal LAN Controller (WfM2.0)

–421-ball 31⋅31mm BGA Package

PC Card Controller Gate Array

•One YEBISU3S gate array is used.

•This gate array has the following functions and components.

–PCI interface (PCI Revision2.2)

–CardBus/PC Card controller (Yenta2 Version2.2)

–SD memory card controller (SDHC Ver.1.2)

–SD IO card controller (Ver.1.0)

–SmartMedia controller (SMHC Ver.01/SMIL1.0)

–SIO (UART) controller (MS Debug Port Specification Ver.1.0)

–Docking station interface

–Q switch control, reset control

–External device interface

Firmware Hub (FWH)

•One Intel 82802AB8 is used.

•This gate array has the following features:

–Intel platform compatibility

–Firmware hub hardware interface mode

–Industry-standard packages

–Two configurable interfaces

–4Mbits of flash memory for platform code/data nonvolatile storage

–Address/Address-Multiplexed (A/A Mux) interface/mode

–Case temperature operating range

–Vcc: 3.3V ± 0.3V

–Vpp: 3.3V and 12V for fast programming (80 hours maximum)

•4Mbits of flash memory are used as shown below:

–64KB are used for VGA-BIOS.

–192KB are used for system BIOS.

–8KB are used for plug and play data area.

–8KB are used for password security.

–16KB are used for boot strap.

–64KB are used for ACPI P code.

–64KB are used for LOGO.

–64KB are reserved for LAN BIOS.

–32KB are reserved.

1-12 TECRA M1 Maintenance Manual (960-436)