Toshiba SATELLITE M30-35 Series Maintenance Manual page 25

1.2 System Unit Block Diagram
GPU Controller
One nVIDIA NV34M chip is used. The GPU controller incorporates graphics accelerator,
video accelerator.
– VRAM 32MB (4M × 32 × 2)/64MB (4M × 32 × 4) DDR200MHz
– AGP bus R2.0 x 4
– LCD Interface LVDS 2ch
– TV Encoder: S-Video 4pin connectorTvxpress2
Sound Controller
AC-Link (in the South Bridge) and STAC975051T (Sigmatel made) are used.
•
Amplifier, Internal microphone, internal stereo speakers, stereo headphone
connector, external microphone connector and volume control knob are mounted.
EC/KBC (Embedded Controller/Keyboard Controller)
One Mitsubishi M306K9FCLRP micon 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/external
–
PS/2 mouse and of the internal keyboard/external PS/2 keyboard
PSC (Power Supply Controller)
Satellite M30-35 Maintenance Manual (960-455)
1 Hardware Overview
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