Toshiba PSLCAX/PSLCBX Benutzerhandbuch
1.2 System Unit Components
1 Hardware Overview
Satellite L300D/L305D/Satellite Pro L300D/EQUIUM L300D/SATEGO L300D
Maintenance Manual
15
4 GPIOs (GPIO0/GPIO3 are digital GPIO shared with digital MIC interface,
GPIO1/GPIO2 are analog) for customized applications
High quality analog differential CD input
2 jack detection pins each designed to detect up to 4 jacks
Supports hardware digital volume control for digital microphone input
Supports external PCBEEP input and built-in digital BEEP generator
KBC/EC (Keyboard Controller/Embedded Controller)
A KBC WINBOND WPCE775L chip is used to serve as KBC/EC and Super IO:
KBC
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Scan controller function
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Interface controller function
EC
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Power supply sequence control
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Overheat shutdown support
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LED control
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Beep control
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Device ON/OFF
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Cooling fan speed control
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Universal I/O port
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Battery capacity check
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Flash memory reprogramming function
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EC access interface
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I2C communication control
Battery EEPROM
24C02 equivalent (128 words x 16 bits, I2C interface) integrated in battery pack
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Storing records of battery use
Clock Generator
Realtek RTM880T-797
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Generating the clock signal required for the system
Modem Controller
Built-in MDC card with Askey / Foxconn / Lite-On. Functions of modem controller:
Digital signal conductor protection