Akai PDP4294LV1, Service Manual

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nDSP Corporation NV320 Data Sheet
NV320 Video Enhancement Processor
1.0 Introduction
The NV320 is a single-chip, programmable
video display processor providing advanced
features for progressive scan, high frame-rate
TV. The NV320 improves upon the functional-
ity of the NV320P by handling non-standard
video input signals. Other feature enhance-
ments include DCTI, Black Level Stretch, and
Saturation Control.
The NV320 offers the following features.
1.1 Highly Integrated Video Processor
•
Three, on-chip, 10-bit Digital-to-Analog
Converters (DACs)
•
Built-in memory controller supporting
SDRAM or SGRAM
•
0.35 µ CMOS process
•
3.3V power supply with 5V tolerant I/Os
•
Standard 208-pin PQFP
1.2 Video Input
•
Multiple video input modes
- Data acquisition mode
- Line-locked mode
- DVD mode
•
Multiple video input data formats
- Digital 16-bit YUV (4:2:2) or 12-bit YUV
(4:1:1)
- Digital 8-bit YUV (ITU-R 656)
- Digital 24-bit YUV (4:4:4)
1.3 Noise Reduction
•
Motion adaptive noise reduction filter
1.4 Color Processing
•
Built-in color space conversion
•
Selectable output color space: YUV or
RGB
1.5 Video Processing
•
Advanced, non-linear video processing
•
Motion compensated deinterlacing
•
Programmable peaking
•
Non-linear interpolation
•
Background coloring
•
Anti-flickering circuitry
•
NTSC/PAL to SDTV 480p format conver-
sion
•
Frame rate up-conversion (50Hz up to
75Hz for PAL, 60Hz up to 90Hz for NTSC)
•
DCTI (Digital Color Transient Improve-
ment)
•
Black Level Stretch
•
Saturation Control
1.6 Host Interface
•
I
2
C interface
•
No programming needed for default mode
application
1.7 General Description and Applications
The NV320 is a single chip digital video pro-
cessor for progressive and digital TV applica-
tions. It provides high quality video
processing including video noise reduction,
motion compensation, sharpness enhance-
ment, and resolution enhancement. It also
provides frame rate conversion and progres-
sive scan conversion with deinterlacing.
The NV320 is a CMOS mixed signal circuit
highly integrated with three, 10-bit digital-to-
analog converters controlled by the I
2
C inter-
face. The NV320 accepts 16-bit YUV (4:2:2),
12-bit YUV (4:1:1), and 8-bit YUV (ITU-R 656)
simultaneously, or it accepts 24-bit YUV
(4:4:4) input from a front-end digital video
color decoder or from an analog-to-digital
converter. Additionally, NV320 supports multi-
ple video input modes: acquisition mode, line-
locked mode, and DVD mode.
The NV320 has an on-chip detection logic
block that corrects non-standard input signals
before processing.
Applications for the NV320 chip are listed
here.
•
Progressive scan televisions
•
Digital televisions (the chip is DTV/HDTV
ready)