Features: ` Video processing
linear horizontal scaling (0.25 . 4)
non-linear horizontal scaling "panoramavision"
dynamic peaking
soft limiter (gamma correction)
color transient improvement
programmable RGB matrix
picture frame generator
two analog RGB/Fast-Blank inputs
` Deflection processing
scan velocity modulation output
high-performance H/V deflection
EHT compensation for vertical / East/West
soft start/stop of H-Drive
vertical angle and bow
differential vertical output
vertical zoom via deflection
horizontal and vertical protection circuit
adjustable horizontal frequency for VGA/SVGA display
` Miscellaneous
selectable 4:1:1/4:2:2 YCrCb input
selectable 27/32-MHz line-locked clock input
crystal oscillator for horizontal protection
automatic picture tube adjustment (cutoff, whitedrive)
single 5-V power supply
hardware for simple 50/60-Hz to 100/120-Hz conversion (display frequency doubling)
two I2C-controlled PWM outputs
beam current limiterApplication` Fig. 12 depicts several DDP applications. Since the DDP functions as a video back-end, it must be complemented with additional functionality to form a complete TV set.
` The VPC 32xx family processes all worldwide analog video signals (including the European PALplus) and allows non-linear Panorama aspect ratio conversion. Thus, 4:3 and 16:9 systems can easily be configured by software. The aspect ratio scaling is also used as a sample rate converter to provide a line-locked digital component output bus (YCrCb) compliant to ITU-R-601. All video processing and line-locked clock/data generation is derived from a single 20.25-MHz crystal. An optional adaptive 2H/4H comb filter (VPC 32xx) performs Y/C separation for PAL and NTSC and all of their substandards.
` The VPC 32xxD and the CIP 3250A provide a highquality analog RGB interface with character insertion capability. This allows appropriate processing of external sources such as MPEG 2 set-top boxes in transparent (4:2:2) quality. Furthermore, it translates RGB/ Fast-Blank signals to the common digital video bus and makes those signals available for 100-Hz processing. In some European countries (Italy), this feature is mandatory.
` The IP indicates memory-based image processing, such as scan rate conversion, vertical processing (Zoom), or PAL+ reconstruction.
Pinout
Specifications
| Symbol |
Parameter |
Pin Name |
Min. |
Max. |
Unit |
| TA |
Ambient Operating Temperature |
− |
0 |
65 |
°C |
| TC |
Case Temperature |
− |
0 |
105 |
°C |
| TS |
Storage Temperature |
− |
−40 |
125 |
°C |
| VSUP |
Supply Voltage |
All Supply Pins |
−0.3 |
6 |
V |
| VI |
Input Voltage |
All Inputs |
−0.3 |
VSUP(P/D/O)+0.3 |
V |
| VO |
Output Voltage |
All Outputs (except HOUT) |
−0.3 |
VSUP(P/D/O)+0.3 |
V |
| VGD |
Voltage between different ground pins |
All Ground Pins |
− |
0.3 |
V |
Stresses beyond those listed in the "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other conditions beyond those indicated in the "Recommended Operating Conditions/Characteristics" of this specification is not implied. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability.
DescriptionThe DDP3310B converts the digital YCrCb to analog RGB (see Fig. 27) and provides contrast and saturation
adjustment. In case of YCrCb 4:1:1 an interpolation filter is used, which converts the digital input signal to YCrCb 4:2:2 standard. The 4:2:2 YCrCb signal is processed by the horizontal scaler. In the luminance processing path, a variety of features, such as Ndynamic peaking and soft limiting, are provided. In the chrominance path, the CrCb signals are converted to 4:4:4 format and filtered by a color transient improvement circuit. The YCrCb signal is converted by a programmable matrix to RGB color space.
DDP3310B Data Sheet
