TDA4657 datasheet(4/17 Pages) PHILIPS

4 / 17 page

June 1993

Philips Semiconductors

Preliminary speciﬁcation

Generic multi-standard decoder

TDA4657

PINNING

SYMBOL

DESCRIPTION

−(R−Y)O

colour difference signal output

−(R−Y)* for baseband delay line

DEEM

external capacitor for SECAM de-emphasis

−(B−Y)

colour difference signal output

−(B−Y)* for baseband delay line

CFOB

external capacitor SECAM demodulator control (B

−Y) Channel

GND

ground

IREF

external resistor for SECAM oscillator

supply 8 V

CFOR

external capacitor SECAM demodulator control (R

−Y) Channel

CHRI

chrominance signal input

CACC

external capacitor for ACC control

HUE

input for HUE control and service switch

NIDT

external capacitor for identiﬁcation circuit (NTSC)

PIDT

external capacitor for identiﬁcation circuit (PAL and SECAM)

OSC

PAL crystal

PLL

external loop ﬁlter

2FSC

× f

sc output

standard setting input/output for NTSC 4.43

SECo

standard setting input/output for SECAM

PALo

standard setting input/output for PAL

sandcastle input

Fig.2 Pin configuration.

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