This part is a kind of semiconductor called 7550.
Function of this product has TDA7550.
Manufacturers : STMicroelectronics
Image and pinout :
Some of the text within the PDF file :
® TDA7550/R TDA7551 TDA7552 TDA7553 DIGITAL SIGNAL PROCESSING IC FOR SPEECH AND AUDIO APPLICATIONS PRODUCT PREVIEW 24-BIT, FIXED POINT, 50 MIPS DSP CORE LARGE ON-BOARD PROGRAM ROM AND DATA RAM (UP TO 16Kw ROM/RAM AND 16Kw RAM) INTEGRATED STEREO A/D AND D/A, 16-BIT SIGMA-DELTA PROGRAMMABLE CODEC SAMPLE RATE FROM 4 TO 48 kHz ON-BOARD PLL FOR CORE CLOCK AND CONVERTERS MANAGEMENT OF EXTERNAL FLASH/SRAM/DRAM MEMORY BANK I2C OR SPI SERIAL INTERFACE FOR EXTERNAL CONTROL 80-PIN TQFP, 0.65 mm PITCH AUTOMOTIVE GRADE (FROM -40° C to +85°C) DESCRIPTION The TDA755X family is a high performances, fully programmable 24-bit, 50 MIPS Digital Signal BLOCK DIAGRAM MULTIPLEXED BUS TQFP80 Processor (DSP), designed to support several speech and audio applications, as Automatic Speech Recognition, Speech [ ... ]