TDA8377A datasheet(23/72 Pages) PHILIPS

23 / 72 page

1997 Jul 01

Philips Semiconductors

Preliminary speciﬁcation

I2C-bus controlled economy PAL/NTSC

and NTSC TV-processors

TDA837x family

Table 16 Interlace

Table 17 Standby

Table 18 Synchronization mode

Table 19 Colour decoder mode

Table 20 Automatic volume levelling

(TDA8373 and TDA8374)

Table 21 RGB blanking mode (TDA8375 and TDA8377)

STATUS

interlace

de-interlace

STB

MODE

standby

normal

POC

MODE

synchronization active

synchronization not active

CM2

CM1

CM0

DECODER MODE

not forced, own intelligence, two

crystals

forced crystal pin 34

(PAL/NTSC)

forced crystal pin 34 (PAL)

forced crystal pin 34 (NTSC)

forced crystal pin 35

(PAL/NTSC)

forced crystal pin 35 (PAL)

forced crystal pin 35 (NTSC)

forced SECAM crystal pin 35

AVL

LEVEL

automatic volume levelling not active

automatic volume levelling active

HBL

MODE

normal blanking with horizontal blanking

pulse

wider blanking to obtain well deﬁned edges

Table 22 Black current stabilization

Table 23 Video identiﬁcation mode

Table 24 Gain of luminance channel

Table 25 Vertical divider mode

Table 26 Search tuning mode

Table 27 Video identiﬁcation mode

Table 28 Long blanking mode (TDA8374 and TDA8375)

AKB

STABILIZATION

black-current stabilization on

black-current stabilization off

VIM

VIDEO IDENT MODE

video identiﬁcation coupled to the internal

CVBS input (pin 13)

video identiﬁcation coupled to the selected

CVBS input

GAI

GAIN

normal gain of luminance channel

[V27 = 1.0 V (b-w)]

high gain of luminance channel

[V27 = 0.45 V (p-p)]

NCIN

VERTICAL DIVIDER MODE

normal operation of the vertical divider

vertical divider switched to search window

STM

SEARCH TUNING MODE

normal operation

reduced sensitivity of the coincidence

detector (bit SL)

VID

VIDEO IDENT MODE

video identiﬁcation switches phase 1 loop on

and off

video identiﬁcation not active

LBM

BLANKING MODE

blanking adapted to standard (50 or 60 Hz)

ﬁxed blanking in accordance with 50 Hz

standard

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