Toshiba Satellite A40 Maintenance Manual - Page 27
One Toshiba TMP87PM48U chip is used., EC/KBC Embedded Controller/Keyboard Controller - power connector
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Page 27 highlights
1.2 System Unit Block Diagram 1 Hardware Overview q VGA Controller Included in the North Bridge q Sound Controller AC 97' Link (in the South Bridge) is used. • Amplifier, internal stereo speakers, stereo headphone connector, external microphone connector and volume control knob are mounted. q EC/KBC (Embedded Controller/Keyboard Controller) One SMSC LPC-47N259 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 q PSC (Power Supply Controller) • One Toshiba TMP87PM48U chip is used. • This controller controls the power sources. Satellite A40 Maintenance Manual (960-458) 1-11
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