1.2 System Unit Block Diagram 1 Hardware Overview
TECRA S1 Maintenance Manual 1-9
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