TDA7522 Datasheet, PDF (1/23 Pages) STMicroelectronics – Digital Servo & Decoder

TDA7522
Digital Servo & Decoder
PRODUCT PREVIEW
s BUILT IN 8Bit MICROCONTROLLER
(STANDARD ST7) with:
– 24 KByte ROM available for ST7 & Servo-Audio
DSP
– 1024Byte RAM, including 128byte stack
– 4KByte RAM for CD-Text memory (for 1block)
– Built in R-W subcode buffer (Max. 144Byte
8packs) for CD-Text
– 24 bit general I/O port (PoartA[7-0], PortB[7-0],
PortC[7-0])
– One External Interrupt (16 IRQ encoder inside)
– 16bit free running counter timer
– 8bit 1ch general purpose A/D
– I²C bus I/F
TQFP80
(14 x 14 x 1.40mm body)
– Watch dog
– Kenwood I/F
s STAND-BY MODE (Stop all clocks and Shut down power of Peripheral (PON pin))
s BUILT IN SERVO & AUDIO DIGITAL SIGNAL PROCESSOr (SAC-DSP) inclusive of:
– 1024x19bit Program RAM
– 512x16bit Coefficient RAM
– 1024x20bit Data RAM
– 128x6bit Decimation RAM
– MAC: 16 bit (Coefficients) x 20 bit (data) multiplier with 38 bit adder
– Instruction execution rate as high as 56MIPS
s BUILT IN PROGRAMMABLE CLOCK GENERATOR PLL
s PERIPHERALS for CD PLAYER APPLICATION
– Data Acquisition, Erasure correction, CLV&CAV controller
– Subcode decoder (CD-Text, CD-Graphic I/F)
– Shock proof memory controller, Disturbance detector
– Decimation filter
s ACTUATORS DRIVING MODE SELECTABLE between PWM or PDM MODE
s 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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