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PDF VDP3133Y Data sheet ( Hoja de datos )
| Número de pieza | VDP3133Y | |
| Descripción | Video Processor | |
| Fabricantes | Micronas | |
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MICRONAS
ADVANCE INFORMATION
VDP 313xY
Video Processor Family
Edition August 15, 2000
6251-519-1AI
MICRONAS
1 page  
ADVANCE INFORMATION
VDP 313xY
Video Processor Family
1. Introduction
The VDP 313xY is a video IC family of high-quality sin-
gle-chip video processors. Modular design and a sub-
micron technology allow the economic integration of
features in all classes of TV sets. The VDP 313xY fam-
ily is based on the VDP 31xxB including YCRCB inputs
for DVD component signals.
The main features of the VDP 3130Y are
1.1. Features
Video Decoding and Processing
– four CVBS, one S-VHS input,
one YCRCB component input
– integrated high-quality A/D converters and associ-
ated clamp and AGC circuits
– adaptive 2H comb filter Y/C separator
– multistandard color decoder PAL/NTSC/SECAM
including all substandards
– multistandard sync decoder
– automatic standard recognition
– black-line detector
– linear horizontal scaling (0.25...4), as well as nonlin-
ear horizontal scaling “Panoramavision”
– black-level expander
– dynamic peaking
– soft limiter (gamma correction)
– color transient improvement
RGB Processing and Deflection
– programmable RGB matrix
– two analog RGB / Fastblank inputs
– half-contrast switch
– picture frame generator
– scan velocity modulation output
– high-performance H/V deflection
– separate ADC for tube measurements
– EHT compensation
– angle and bow correction
– one 20.25 MHz crystal, few external components
– I2C-Bus Interface
– 64-pin PSDIP package
1.2. System Architecture
Fig. 1–1 shows the block diagram of the video proces-
sor
CIN1
CIN2/CRIN
CBIN
VIN1
VIN2
VIN3
VIN4
VOUT
Analog
Frontend
AGC,
2×8 bit ADC
2H
Adaptive
Combfilter
Color
Decoder
NTSC,
PAL,
SECAM
Horizontal
Scaler
Panorama
Mode
Display
Processor
RGB Matrix,
CLUT,
Scan Veloc.
Analog
Backend
3×10 bit DAC,
Tube Control,
RGB Switch
SVM
RGB/FB IN1
RGB/FB IN2
Half Contrast
RGB OUT
Clock Gen.
DCO
I2C
I2C
Fig. 1–1: Block diagram of the VDP 313xY
Sync and Deflection
H/V/EW
Measurement
ADC
Sense
Micronas
5
5 Page 
ADVANCE INFORMATION
VDP 313xY
2.4.7. Automatic standard recognition
The burst-frequency measurement is also used for
automatic standard recognition (together with the sta-
tus of horizontal and vertical locking) thus allowing a
completely independent search of the line and color
standard of the input signal. The following standards
can be distinguished:
– PAL B,G,H,I
– NTSC M
– SECAM
– NTSC 44
– PAL M
– PAL N
– PAL 60
For a preselection of allowed standards, the recogni-
tion can be enabled/disabled via I2C bus for each stan-
dard separately.
If at least one standard is enabled, the VDP 313xY
checks regularly the horizontal and vertical locking of
the input signal and the state of the color killer. If an
error exists for several adjacent fields a new standard
search is started. Depending on the measured line
number and burst frequency the current standard is
selected.
For error handling the recognition algorithm delivers
the following status information:
– search active (busy)
– search terminated, but failed
– found standard is disabled
– vertical standard invalid
– no color found
– standard switched
2.4.8. PAL Compensation/1-H Comb Filter
The color decoder uses one fully integrated delay line.
Only active video is stored.
The delay line application depends on the color stan-
dard:
– NTSC: 1-H comb filter or color compensation
– PAL: color compensation
– SECAM: crossover-switch
In the NTSC compensated mode, Fig. 2–5 c), the color
signal is averaged for two adjacent lines. Thus,
cross-color distortion and chrominance noise is
reduced. In the NTSC combfilter mode, Fig. 2–5 d), the
delay line is in the composite signal path, thus allowing
reduction of cross-color components, as well as
cross-luminance. The loss of vertical resolution in the
luminance channel is compensated by adding the ver-
tical detail signal with removed color information. If the
2-H adaptive comb filter is used, then the 1-H NTSC
comb filter should not be used.
CVBS
8
Notch
filter
Chroma
Process.
a) conventional
Y Luma
8
chroma
CRCB
8
Chroma
Process.
b) S-VHS
Y
CRCB
CVBS
8
Notch
filter
Y
CVBS
8
Chroma
Process.
1H
Delay
c) compensated
1H
Delay
Notch
filter
CRCB
Y
Chroma
Process.
d) comb filter
Fig. 2–5: NTSC color decoding options
CRCB
Micronas
11
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