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1 Hardware Overview 1B1.2 System Unit Components
16 Satellite L350D/Satellite Pro L350D/EQUIUM L350D/SATEGO L350D Maintenance Manual
y 4 GPIOs (GPIO0/GPIO3 are digital GPIO shared with digital MIC interface,
GPIO1/GPIO2 are analog) for customized applications
y High quality analog differential CD input
y 2 jack detection pins each designed to detect up to 4 jacks
y Supports hardware digital volume control for digital microphone input
y 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:
y KBC
− Scan controller function
− Interface controller function
y EC
− Power supply sequence control
− Overheat shutdown support
− LED control
− Beep control
− Device ON/OFF
− Cooling fan speed control
− Universal I/O port
− Battery capacity check
− Flash memory reprogramming function
− EC access interface
− I2C communication control
Battery EEPROM
y 24C02 equivalent (128 words x 16 bits, I2C interface) integrated in battery pack
− Storing records of battery use
Clock Generator
y Realtek RTM880T-797
− Generating the clock signal required for the system
Modem Controller
Built-in MDC card with Askey / Foxconn / Lite-On. Functions of modem controller:
y Digital signal conductor protection