Toshiba TECRA S1 manual ATI M9P

1.2 System Unit Block Diagram 1 Hardware Overview

Video controller

•ATI M9P

−LCD control

−External RGB output control

−NTSC/PAL output control

Video RAM

•32 MB (DDR SDRAM) Sound controller

The ICH4-M integrated audio controller supports multimedia. The sound system contains the following:

•MIDI replay feature

•Stereo speakers

•Headphone jack

•Internal microphone jack

•External microphone jack

•ICH4-M integrated audio controller + AD1886

−3D sound (surround) feature

−16-bit, 48-KHz stereo record/replay feature

−Full-duplex (simultaneous record/replay capability)

KBC/EC (Keyboard Controller/Embedded Controller)

A single LPC 47N253 chip is used to serve as KBC/ EC.and Super IO.

•KBC

−Scan controller function

−Interface controller function

−Controlling the switching between the AccuPoint and external PS/2 mouse or between the built-in keyboard and external PS/2 keyboard or their simultaneous operation

TECRA S1 Maintenance Manual 1-9