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Fabricante

TDA8846

I2C-bus controlled PAL/NTSC/SECAM TV processors

Philips Electronics 

Philips Semiconductors

I2C-bus controlled PAL/NTSC/SECAM TV

processors

Tentative Device Specification

TDA884X/5X-N2 series

Table 19 Video ident mode

VIM

MODE

0 ident coupled to internal CVBS (pin 13)

1 ident coupled to selected CVBS

Table 20 Gain of luminance channel

GAI

MODE

0 normal gain (V27 = 1 VBL-WH)

1 high gain (V27 = 0.45 VP-P)

Table 21 Vertical divider mode

NCIN

0

1

VERTICAL DIVIDER MODE

normal operation

switched to search window

Table 22 Search tuning mode

STM

0

1

MODE

normal operation

reduced sensitivity of video indent circuit

Table 23 Video ident mode

VID

VIDEO IDENT MODE

0 ϕ1 loop switched on and off

1 not active

Table 24 Long blanking mode

LBM

0

1

BLANKING MODE

adapted to standard (50 or 60 Hz)

fixed in accordance with 50 Hz standard

Table 25 EHT tracking mode

HCO

0

1

TRACKING MODE

EHT tracking only on vertical

EHT tracking on vertical and EW

Table 26 Enable vertical guard (RGB blanking)

EVG

0

1

VERTICAL GUARD MODE

not active

active

Table 27 Service blanking

SBL

0 off

1 on

SERVICE BLANKING MODE

Table 28 Overvoltage input mode

PRD

0

1

OVERVOLTAGE MODE

detection mode

protection mode

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

MAT

0

1

MATRIX POSITION

adapted to standard

PAL matrix

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

MAT

0

1

MATRIX POSITION

Japanese matrix

USA matrix

Table 31 RGB blanking

RBL

0

1

not active

active

RGB BLANKING

Table 32 Noise coring (peaking)

COR

0 off

1 on

NOISE CORING

Table 33 Enable fast blanking RGB-1

IE1

FAST BLANKING

0 not active

1 active

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

IE2

FAST BLANKING

0 not active

1 active

December 16, 1997

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