TDA9554PS datasheet(73/125 Pages) PHILIPS

73 / 125 page

2000 Jun 22

Philips Semiconductors

Tentative Device Speciﬁcation

TV signal processor-Teletext decoder with

embedded

µ-Controller

TDA955X/6X/8X PS/N1 series

Table 93

PLL demodulator frequency adjust

Table 94

Video mute

Table 95

Modulation standard

Table 96

AFC window

Table 97

IF sensitivity

Table 98

Search tuning mode

Table 99

Selection external input for sound IF circuit

Table 100Calibration of IF PLL demodulator

Table 101AM/FM operation (QSS versions);

Table 102IF AGC speed

Table 103 Fast ﬁlter IF-PLL

Table 104 Gain FM demodulator

Table 105Sound mute

Note

1. The mute is activated when the digital acquisition help

is out-of-window.

Table 106Window selection of Narrow-band sound PLL

IFE

IFA

IFB

IFC

IF FREQUENCY

0000

58.75 MHz

0001

45.75 MHz

0010

38.90 MHz

0011

38.00 MHz

0100

33.40 MHz

0110

33.90 MHz

0101

42.00 MHz

0111

48.00 MHz

external reference carrier

VSW

STATE

normal operation

IF-video signal switched off

MOD

MODULATION

negative

positive

AFW

AFC WINDOW

normal

enlarged

IFS

IF SENSITIVITY

normal

reduced

STM

MODE

normal operation

reduced sensitivity of video indent circuit

SIF

MODE

IF input not selected

IF input selected (see also table 1)

IFLH

MODE

calibration system active

calibration system not active

AMFM

CONDITION

normal operation

FM demodulator activated

AGC1

AGC0

AGC SPEED

0.7

× norm

norm

× norm

FFI

CONDITION

normal time constant

increased time constant

AGN

MODE

normal operation

gain +6 dB, to be used for the demodulation of

mono signals in the NTSC system

SM1

SM0

CONDITION

see note 1

mute on

mute off

FMWS

FUNCTION

small window

large window

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