TDA4670 데이터 시트보기 (PDF) - Philips Electronics

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TDA4670

Picture Signal Improvement (PSI) circuit

Philips Electronics 

Philips Semiconductors

Picture Signal Improvement (PSI) circuit

Product specification

TDA4670

Table 2 Function of the bits

DATA

DL0

DL1

DL2

DL3

DL4

CTI

SC5

LCF

PEAK

COR

PCONx

FUNCTION

set delay in luminance channel

set colour transient improvement

select sandcastle pulse voltage

set peaking frequency response

set peaking delay

set coring control

set peaking amplification

LOGIC 1

LOGIC 0

45 ns

0 ns

90 ns

0 ns

180 ns

0 ns

180 ns

0 ns

450 ns

0 ns

active

inactive

+5 V

+12 V

2.6 MHz

5.0 MHz

active

inactive

active

inactive

see Table 3

Table 3 Peaking amplification

PCON1 PCON0

0

0

0

1

1

0

1

1

GRADE OF PEAKING

(dB)

−3

0

+3

+6

Remarks to the subaddress bytes

Subaddresses 00H to 0FH are reserved for colour decoders and RGB processors.

Subaddresses 10 and 11 only are acknowledged.

General call address is not acknowledged.

Power-on-reset: D7 to D1 bits of data bytes are set to logic 0, D0 bit is set to logic 1.

1996 Dec 11

10

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