OM8373 datasheet(56/108 Pages) PHILIPS

56 / 108 page

2004 Jan 15

Philips Semiconductors

Tentative Device Speciﬁcation

TV signal processor-Teletext decoder with

embedded

µ-Controller

OM8373; OM8378

Table 59

Automatic colour limiting

Table 60

Chroma bandpass centre frequency

Table 61

Identiﬁcation sensitivity PAL/NTSC decoder

Table 62 Bypass of chroma base-band delay line

Table 63

Forced Colour-On

Table 64 Selected video out

Table 65 Condition AVL/SNDIF/REFO

Table 66 Source select

Table 67 Blanking of RGB outputs

Table 68 Synchronization of OSD/TEXT display

Table 69

Phase 1 (

ϕ1) time constant

Table 70

Synchronization mode

Table 71

Stand-by

Table 72

Video ident mode source (see ﬁg. 21)

ACL

COLOUR LIMITING

not active

active

CENTRE FREQUENCY

0FSC

1.1

× FSC

PSNS

CONDITION

normal operation

increased identiﬁcation sensitivity

BPS

DELAY LINE MODE

active

bypassed

FCO

CONDITION

off

1on

SVO

CONDITION

IF video available at output

selected CVBS available at output

CMB1 CMB0

CONDITION

AVL/SNDIF active (depends on SIF bit)

output voltage 2.3 V + subcarrier;

output voltage low (<0.8 V)

output voltage high (>4.5V)

INA

INB

SELECTED SIGNALS

CVBS1

CVBS2

Y/C

RGBL

CONDITION

normal operation

RGB outputs blanked continuously

HP2

µ-CONTROLLER COUPLED TO

ϕ1 loop

ϕ2 loop

FOA

FOB

MODE

normal

slow

slow/fast

fast

POC

MODE

active

not active

STB

MODE

stand-by

normal

VIM

VIDEO IDENT COUPLING

ident coupled to internal CVBS (pin 40)

ident coupled to selected CVBS

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