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STV3208 Datasheet دیتاشیت PDF دانلود

دیتاشیت - ST Microelectronics - 8 x 8 DISCRETE COSINE TRANSFORM

شماره قطعه STV3208
شرح مفصل 8 x 8 DISCRETE COSINE TRANSFORM
تولید کننده ST Microelectronics 
آرم ST Microelectronics 


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STV3208 شرح
STV3208
8 x 8 DISCRETE COSINE TRANSFORM (DCT)
. 0 TO 27MHz PIXEL RATE IN SINGLE
PRECISION MODE,
. 0 TO 20 MHz PIXEL RATE IN DOUBLE
PRECISION MODE
. FORWARD AND INVERSE 8 x 8 TRANS-
FORM
. 9-BIT TWO’S COMPLEMENT PIXEL FORMAT
. 12-BIT TWO’S COMPLEMENT COEFFICIENT
FORMAT
. OPTIMIZED ACCURACY FOR 8-BIT TWO’S
COMPLEMENT PIXEL FORMAT
. SELECTABLE SCANNING OF COEFFICIENT
BLOCKS
. FULLY TTL AND CMOS COMPATIBLE
. CMOS TECHNOLOGY
. SINGLE +5 VOLT POWER SUPPLY
. MAXIMUM POWER DISSIPATION : 750mW
AT 27MHz
DIP40
(Plastic Package)
DESCRIPTION
The STV3208 is a dedicated circuit for the 8 x 8
discrete cosine transform(DCT) computation.Two-
dimensional forward DCT (FDCT) or inverse DCT
(IDCT) is performed for 8 x 8 block sizes and a pixel
rate up to 27MHz. The circuit architecture is fully
bidirectional with 9-bit magnitude pixel data bus
and a 12-bit magnitude coefficient data bus pro-
grammed as input or output depending on the
selection of FDCT or IDCT.
Pixel Bus
Coefficient Bus
FDCT
Input
Output
IDCT
Output
Input
Data Format
9-bit 2’s
Complement
12-bit 2’s
Complement
For the forward transform, the input pixels are
coded on 9-bit 2’s complement and the output
coefficients are coded on 12-bit 2’s complement.
For the inverse transform, the data format is iden-
tical with the coefficients used as input and the
pixels used as output.
Two operating modes are provided : single preci-
sion mode at a pixel rate up to 27 MHz, and double
precision mode at a pixel rate up to 20 MHz.
PQFP44
(Plastic Package)
ORDER CODES
Part
Number
STV3200CP
STV3200CV
Temperature
Range
0 to 70oC
0 to 70oC
Package
DIP 40
PQFP44
July 1992
1/17
Free Datasheet http://www.datasheet4u.net/

قانون اساسیصفحه 17
دانلود [ STV3208 دیتاشیت ]



دیتاشیت توصیه

شماره قطعه شرح مفصل تولید کنندگان
STV3208 8 x 8 DISCRETE COSINE TRANSFORM ST Microelectronics
ST Microelectronics

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