This part is a kind of semiconductor called TDA1305.

Function of this product has Stereo 1fs data input up-sampling filter with bitstream continuous dual DAC BCC-DAC2.

Manufacturers : NXP

Image and pinout :

Some of the text within the PDF file :

INTEGRATED CIRCUITS DATA SHEET TDA1305T Stereo 1fs data input up-sampling filter with bitstream continuous dual DAC (BCC-DAC2) Preliminary specification Supersedes data of September 1994 File under Integrated Circuits, IC01 1995 Dec 08 Philips Semiconductors Preliminary specification Stereo 1fs data input up-sampling filter with bitstream continuous dual DAC (BCC-DAC2) FEATURES • Easy application • 16fs Finite-duration Impulse-Response (FIR) filter incorporated • Selectable system clock (fsys) 256fs or 384fs • I2S-bus serial input format (at fsys = 256fs) or LSB fixed 16, 18 or 20 bits serial input mode (at fsys = 384fs) • Slave-mode clock system • Cascaded 4-stage digital filter incorporating 2-stage FIR filter, linear interpolator and sample-and-hold • Smoothed tran [ ... ]

TDA1305 PDF Datasheet Download