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TDA7522

Digital Servo & Decoder

PRODUCT PREVIEW

s

BUILT IN 8Bit MICROCONTROLLER

(STANDARD ST7) with:

鈥?24 KByte ROM available for ST7 & Servo-Audio

DSP

鈥?1024Byte RAM, including 128byte stack

鈥?4KByte RAM for CD-Text memory (for 1block)

鈥?Built in R-W subcode buffer (Max. 144Byte

8packs) for CD-Text

鈥?24 bit general I/O port (PoartA[7-0], PortB[7-0],

PortC[7-0])

鈥?One External Interrupt (16 IRQ encoder inside)

鈥?16bit free running counter timer

鈥?8bit 1ch general purpose A/D

鈥?I

2

C bus I/F

鈥?Watch dog

鈥?Kenwood I/F

TQFP80

(14 x 14 x 1.40mm body)

s

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STAND-BY MODE (Stop all clocks and Shut down power of Peripheral (PON pin))

BUILT IN SERVO & AUDIO DIGITAL SIGNAL PROCESSOr (SAC-DSP) inclusive of:

鈥?1024x19bit Program RAM

鈥?512x16bit Coefficient RAM

鈥?1024x20bit Data RAM

鈥?128x6bit Decimation RAM

鈥?MAC: 16 bit (Coefficients) x 20 bit (data) multiplier with 38 bit adder

鈥?Instruction execution rate as high as 56MIPS

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BUILT IN PROGRAMMABLE CLOCK GENERATOR PLL

PERIPHERALS for CD PLAYER APPLICATION

鈥?Data Acquisition, Erasure correction, CLV&CAV controller

鈥?Subcode decoder (CD-Text, CD-Graphic I/F)

鈥?Shock proof memory controller, Disturbance detector

鈥?Decimation filter

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ACTUATORS DRIVING MODE SELECTABLE between PWM or PDM MODE

256Fs / 384Fs (16.9344MHz) CLOCK INPUT.

May 1998

This is preliminary information on a new product now in development. Details are subject to change without notice.

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