SAA4945H/V1 データシートの表示（PDF） - Philips Electronics

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SAA4945H/V1

LIne MEmory noise Reduction IC (LIMERIC)

Philips Electronics 

Philips Semiconductors

LIne MEmory noise Reduction IC

(LIMERIC)

Preliminary specification

SAA4945H

Table 8 Input /output data coding

INPUT

BIT

Y

Y7

Y07

Y6

Y06

Y5

Y05

Y4

Y04

Y3

Y03

Y2

Y02

Y1

Y01

Y0

Y00

U

UI1

U07

UI0

U06

V

VI1

V07

VI0

V06

INPUT DATA SEQUENCE

Y17

Y27

Y37

Y16

Y26

Y36

Y15

Y25

Y35

Y14

Y24

Y34

Y13

Y23

Y33

Y12

Y22

Y32

Y11

Y21

Y31

Y10

Y20

Y30

U05

U03

U01

U04

U02

U00

V05

V03

V01

V04

V02

V00

WEI (PIN 21)

• Write enable input

• Write enable indicates the time when active input

samples (Y, U and V) are present

• Timing relation (see Fig.4) depending on the logic level

of the Write Enable Select signal (WES) in status

register; to adapt to different external video memories

• The number of input samples is a multiple of 4 (see

Fig.4)

• Start of new line indicated by write enable signal LOW

for at least 4 consecutive clock periods (see Fig.4)

• During active line, WEI is not allowed to be LOW for

more than 1 clock cycle.

1997 Jun 10

8

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