TDA8844 datasheet(21/68 Pages) PHILIPS

21 / 68 page

December 16, 1997

Philips Semiconductors

Tentative Device Speciﬁcation

I2C-bus controlled PAL/NTSC/SECAM TV

processors

TDA884X/5X-N2 series

Table 19 Video ident mode

Table 20 Gain of luminance channel

Table 21 Vertical divider mode

Table 22 Search tuning mode

Table 23 Video ident mode

Table 24 Long blanking mode

Table 25 EHT tracking mode

Table 26 Enable vertical guard (RGB blanking)

VIM

MODE

ident coupled to internal CVBS (pin 13)

ident coupled to selected CVBS

GAI

MODE

normal gain (V27 = 1 VBL-WH)

high gain (V27 = 0.45 VP-P)

NCIN

VERTICAL DIVIDER MODE

normal operation

switched to search window

STM

MODE

normal operation

reduced sensitivity of video indent circuit

VID

VIDEO IDENT MODE

ϕ1 loop switched on and off

not active

LBM

BLANKING MODE

adapted to standard (50 or 60 Hz)

ﬁxed in accordance with 50 Hz standard

HCO

TRACKING MODE

EHT tracking only on vertical

EHT tracking on vertical and EW

EVG

VERTICAL GUARD MODE

not active

active

Table 27 Service blanking

Table 28 Overvoltage input mode

Table 29 PAL-SECAM/NTSC matrix (TDA8841/2/3/4/54)

Table 30 NTSC matrix (TDA 8846/46A/47/57)

Table 31 RGB blanking

Table 32 Noise coring (peaking)

Table 33 Enable fast blanking RGB-1

Table 34 Enable fast blanking RGB-2 (TDA 885X)

SBL

SERVICE BLANKING MODE

0off

1on

PRD

OVERVOLTAGE MODE

detection mode

protection mode

MAT

MATRIX POSITION

adapted to standard

PAL matrix

MAT

MATRIX POSITION

Japanese matrix

USA matrix

RBL

RGB BLANKING

not active

active

COR

NOISE CORING

0off

1on

IE1

FAST BLANKING

not active

active

IE2

FAST BLANKING

not active

active

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