This part is a kind of semiconductor called SI2109.

Function of this product has (SI2107 - SI2110) SATELLITE RECEIVER.

Manufacturers : Silicon Laboratories

Image and pinout :

Some of the text within the PDF file :

S i 2 1 0 7 / 0 8 / 0 9/10 S A T E L L I T E R E C E I V E R F O R D V B -S /D S S W I T H QUICKLOCK AND QUICKSCAN Features Single-chip tuner, demodulator, and LNB controller DVB-S- and DSS-compliant QPSK/BPSK demodulation Integrated step-up dc-dc converter for LNB power supply (Si2108/10 only) Input signal level: –82 to –10 dBm Symbol rate range: 1 to 45 MBaud Automatic acquisition and fade recovery Automatic gain control On-chip blind scan accelerator with QuickScan (Si2109/10 only) DiSEqC™ 2.2 support Power, C/N, and BER estimators I2C bus interface 3.3/1.8 V supply, 3.3 V I/O Pb-free/RoHS-compliant package VDD_LNA REXT Pin Assignments Si2107/08/09/10 GND GND VDD_SYNTH 35 VDD_LO RFIN2 RFIN1 RFIP2 RFIP1 GND 44 43 42 41 40 39 38 37 36 Applications Set-top boxes Digital video rec [ ... ]

SI2109 PDF Datasheet Download