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© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 0.11 — 25 January 2007
2 of 230
NXP Semiconductors
UOC-TOP-64 N1 series
Signal processor for CRT TV
2.
Features
2.1 Analog Video Processing
2.1.1 Overview of available features (AV-110/90 and Mono-110 concept)
Multi-standard vision IF circuit with alignment-free PLL demodulator
Internal (switchable) time-constant for the IF-AGC circuit
Switchable group delay correction and sound trap (with switchable centre frequency)
for the demodulated CVBS signal
Separate Second Sound IF output or FM demodulator output without de-emphasis
available, which can be used as input for an external BTSC decoder or as input for
external sound band-pass filter for second language processing.
Separate SSIF input available as input for the FM-PLL demodulator to demodulate
FM-radio with an IF frequency of 10.7 MHz, or as input from an external sound
band-pass filter for second language processing.
AM demodulator without extra reference circuit
The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be
switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of
this system is such that the external band-pass filters can be omitted.
The FM-PLL demodulator can be set to centre frequencies of 4.72/5.74 MHz so that a
second sound channel can be demodulated. In such an application it is necessary that
an external bandpass filter is inserted.
Audio switch circuit with 2 stereo inputs (1 stereo input can also be switched into two
mono sound inputs) and a stereo output which can be used for the drive of for audio
power amplifiers (with volume and tone-control) or as SCART/CINCH output. The
second stereo input is only available via the combined C2/C3/C4/AUDIOIN5R pin for
the right channel and via the combined CVBS4/Y4/AUDIOIN5L pin for the left channel.
Video switch with 3 external CVBS inputs. All CVBS inputs can be used as Y-input for
Y/C signals. However, only 1 Y/C source can be selected because the circuit has 1
chroma input. CVBS3/Y3 input available in combination with the G/Y-3 input pin.
1 CVBS output, this output can be used as monitor video output or as front-end video
output or as independent selectable video output.
Automatic Y/C signal detector.
Integrated luminance delay line with adjustable delay time
Only one reference (24.576 MHz) crystal required for the m-Controller, Teletext- and
the color decoder
Multi-standard color decoder with automatic search system and various “forced mode”
possibilities
Internal base-band delay line
Indication of the Signal-to-Noise ratio of the incoming CVBS signal
Linear RGB/YP
B
P
R
input.
Scan Velocity Modulation output. The SVM circuit is active for all the incoming CVBS,
Y/C and RGB/YP
B
P
R
signals. The SVM output is combined with the black current input
of the black current stabilisation circuit. By means of a small application adaptation
both functions can be operational in parallel.
