January 1995

32

Philips Semiconductors

Objective specification

processor

TDA8366

26. The (R

−Y) and (B−Y) signals are demodulated with a phase difference of the reference carrier of 90° and a gain ratio

. The matrixing to the required signals is achieved in the control part.

27. This parameter indicates the bandwidth of the complete chrominance circuit including the chrominance bandpass

filter. The bandwidth of the low-pass filter of the demodulator is approximately 1 MHz.

28. At nominal setting of the gain control. When this amplitude is exceeded the peak-white limiting circuit will reduce the

contrast. The control voltage is generated via the external capacitor connected to the beam-current limiting input.

29. Signal-to-noise ratio (S/N) is specified as peak-to-peak signal with respect to RMS noise (bandwidth 5 MHz).

30. This is a current input. The indicated value of the nominal bias current is obtained at the nominal setting of the gain

(white point) control. The actual value of the bias current depends on the gain control setting of each channel. As a

result the ‘black-current’ of each gun is adapted to the white point setting so that the back-ground colour will follow

the white point adjustment.

Table 42 Output current of the phase detector in the various conditions

IC CONDITIONS

ϕ-1 CURRENT/MODE

VID

POC

FOA

FOB

IDENT

COIN

NOISE

SCAN

V-RETR

GATING

MODE

−

0

0

0

yes

yes

yes

30

30

yes

auto

−

0

0

0

yes

no

−

180

270

no

auto

−

0

0

1

yes

yes

−

30

30

yes

slow

−

0

0

1

yes

no

−

180

270

no

slow

−

01

−

yes

−−

180

270

no

fast

00

−−

no

−−

6

6

no

OSD

−

1

−−−−−−−−

off

BY

–

()

RY

–

()

---------------------

1.78

=

Table 43 Code numbers for special crystals

SYSTEM

FREQUENCY

(MHz)

CODE NUMBER

PAL-N

3.582056

9922 520 00381

NTSC-M

3.579545

9922 520 00382

PAL-M

3.575611

9922 520 00383

PAL-B/G

4.433619

9922 520 00384