1.2 System Unit Components 1 Hardware Overview
y Two independent 16/20/24-bit S/PDIF-Out converters support 44.1 k/48 k/96 k/192 kHz
sample rate.
y One 16/20/24-bit S/PDIF-In converter supports 44.1 k/48 k/96 k/192 kHz sample rate.
y High quality analog differential CD input.
y Support external PCBEEP input and built-in digital BEEP generator.
y Two jack detection pins each designed to detect up to 4 jacks.
y All analog jacks are stereo input and output re-tasking for analog plug & play.
y Built-in headphone amplifiers for each re-tasking jack.
y Two digital GPIOs and one analog GPIO for customized applications.
KBC/EC (Keyboard Controller/Embedded Controller)
A single KBC W8769 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 SLG8SP510
− Generating the clock signal required for the system
Qosmio F40/F45 Maintenance Manual 19