SAA4945H

INTEGRATED CIRCUITS DATA SHEET SAA4945H LIne MEmory noise Reduction IC (LIMERIC) Preliminary specification File under Integrated Circuits, IC02 1997 Jun 10 Philips Semiconductors Preliminary specification LIne MEmory noise Reduction IC (LIMERIC) FEATURES 2-D adaptive vertically recursive noise reduction Noise reduction for Y, U and V signals in 4 : 1 : 1 format Single 5 V ±10% power supply Communication by means of serial communication protocol 83C654 (SNERT bus) Via SNERT bus, 10 different types of noise reduction selectable; the noise reduction function can also be disabled Phase relation write enable input/output signal simultaneously switchable over one clock period w.r.t. input/output samples 8-bit wide data processing for Y, U and V; in unsigned format (Y signal) and in 2’s complement (U and V signals) One fixed line locked clock operation frequency up to 16 MHz (typical) Exactly one line delay. QUICK REFERENCE DATA SYMBOL VDD IDD P fCLK fSNERT Tamb Note 1. Maximum number of clocks per line is 1024. ORDERING INFORMATION TYPE NUMBER SAA4945H PACKAGE NAME DESCRIPTION PARAMETER supply voltage (pins 5, 29 and 30) supply current power dissipation clock frequency bus clock frequency operating ambient temperature ±7%; note 1 CONDITIONS − − 10 − 0 MIN. 4.5 70 350 16 − − TYP. 5.0 − − GENERAL DESCRIPTION SAA4945H The SAA4945H, LIMERIC (LIne MEmory noise Reduction IC) is a 2-D recursive noise reduction filter for both luminance and colour difference signals....