This part is a kind of semiconductor called SLG8SP513.

Function of this product has Clock Synthesizer.

Manufacturers : Silego Technology

Image and pinout :

Some of the text within the PDF file :

SLG8SP513 Clock Synthesizer for Intel Mobile PCI-Express Chipset Features • Low Power CK505 compatible clock synthesizer • SLG8SP513 is a cost reduced CK505 with integrated voltage regulator for mobile applications • Scalable Low Voltage VDD I/O (3.3V to 1.05V) to reduce power consumption • Low Power differential outputs with integrated series termination resistors (50 ohm resistor to GND and 33 ohm series resistor not needed) • Integrated CK_SSCD function to provide additional Spread Spectrum support for GMCH • CLK_REQ# inputs to support SRC clock power management • 64 pin QFN Package Output Summary • 2- differential CPU clock outputs @ 0.7V • 1 - selectable differential CPU/SRC clock output @ 0.7V • 1 - selectable differential DOT96/SRC clock output @ 0.7V • 8 - d [ ... ]

SLG8SP513 PDF Datasheet Download