UPD64083 NEC, UPD64083 Datasheet - Page 2

• Manufacturer Part Number: UPD64083
• Description: 3 Dimensional Y/C Separation IC with On-Chip Memory
• Manufacturer: NEC

synchronization separator, and BPF circuit, all
of which can be achieved using a few transistors.
significantly reduces the required mounting
space.
2. On-chip memory
memory used in conventional Y/C separation ICs
(µPD64082, etc.) to store frame delay data,
which is required in order to perform 3-D Y/C
separation. However, the memory interface that
connected this memory tended to be the source
of extremely disruptive noise that had a very
negative effect on the picture signals, leading to
degraded picture quality. With the µPD64083,
however, this noise source has been eliminated
by incorporating the memory on the chip, leaving
no picture quality degradation caused by
memory access noise.
3. Low power consumption
µPD64083 IC chip using the latest fabrication
technology to create a single-chip product, the
power consumption of the chip during operation
has been lowered to about half the level of the
conventional IC. Moreover, the addition of a
sleep mode that can be activated by a command
sent over the I
operating but this IC is not has enabled a further
50% (or more) reduction in the power
consumption.
4. Many added functions
performing noise reduction on Y/C separated
signals, in addition to the 3-D Y/C separation
function itself. This 3-D noise reduction function
utilizes the frame memory and allows the
efficient reduction of just the noise, without
affecting the resolution of the picture.
detection, wide clear vision ID detection, and
ID-1 detection are also included, the results of
which can be read out from the I
border correction and horizontal peaking
functions implemented for luminance signals to
accentuate the edges of the picture, and a coring
function to enable simple and effective noise
reduction, thus providing broad picture quality
control.
This not only facilitates board design, but also
Four-megabit EDO DRAM is the frame
By incorporating the memory on the
The µPD64083 contains a function for
A range of detection functions such as noise
Other functional additions include vertical
2
C bus in cases when the set is
2
C bus.
Fig. 2 µPD64083 Block Diagram
Fig. 1 Development Roadmap of NEC's 3-D Y/C Separation ICs
sync.
sep.
Ext.
f
f
BFP
SC
SC
out
in
˜
1996
Sync.
sep.
Clamp
µPD64088
Bias
generator
Clock
f
SC
decoder
1997
20 MHz
8
2M FIFO
generator
/227.5f
f
SC
Timing
Y-ADC
C-ADC
10-bit
PLL
10-bit
H
10-bit digital
comp. input
1M FIFO
µPD64081B
8-bit system
1998
Non std.
detector
C-noise reducer
Y/C separator &
Y-noise reducer
Y-ADC
C-Delay &
4M EDO
DRAM
Frame delay memory
detector
Motion
On-chip 10-bit Y-ADC
1999
(4 Mb)
µPD64082
Y
C
4M EDO
DRAM
Y-enhancer
WCV-ID
decoder
decoder
detector
Y-coring
Noise
ID-1
2000
On-chip 4 Mb memory
µPD64083
Power down
control
I
2001
Y-DAC
Y-DAC
2
10-bit
10-bit
C bus
I/F
˜