OM8373 datasheet(57/108 Pages) PHILIPS

57 / 108 page

2004 Jan 15

Philips Semiconductors

Tentative Device Speciﬁcation

TV signal processor-Teletext decoder with

embedded

µ-Controller

OM8373; OM8378

Table 73

Video ident mode

Table 74

Disable reference oscillator check in the SUP

output bit (see also Table 140)

Table 75 Forced slicing level for vertical sync

Table 76

Switch-off in vertical overscan

Table 77

Forced ﬁeld frequency

Table 78

Interlace

Table 79

Vertical divider mode

Table 80 Black current measuring lines in overscan (for

vertical zoom setting

< 1)

Table 81 AFC switch

Table 82 Disable ﬂash protection

Table 83 X-ray detection

Table 84 Service blanking

Table 85

Adjustment Vg2 voltage

Table 86

Enable vertical guard (RGB blanking)

VID

VIDEO IDENT MODE

ϕ1 loop dependent on video ident system

ϕ1 loop not dependent on video ident system

RED

CONDITION

reference oscillator check enabled

reference oscillator check disabled

FSL

SLICING LEVEL

slicing level dependent on noise detector

ﬁxed slicing level of 60%

OSO

MODE

Switch-off undeﬁned

Switch-off in vertical overscan

FORF

FORS

FIELD FREQUENCY

auto (60 Hz when line not in sync)

60 Hz

keep last detected ﬁeld frequency

auto (50 Hz when line not in sync)

STATUS

interlace

de-interlace

NCIN

VERTICAL DIVIDER MODE

normal operation

switched to search window

OSVE

MODE

normal operation

measuring lines in overscan

AFN

MODE

normal operation

AFC not active

DFL

MODE

ﬂash protection active

ﬂash protection disabled

XDT

MODE

protection mode, when a too high EHT is

detected the receiver is switched to stand-by

and the XPR-bit is set to 1

detection mode, the receiver is not switched

to stand-by and only the XPR-bit is set to 1

SBL

SERVICE BLANKING MODE

off

1on

AVG

MODE

normal operation

1Vg2 adjustment (WBC and HBC bits in output

byte 01 can be read)

EVG

VERTICAL GUARD MODE

not active

active

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