Achieving a Common Chassis Worldwide
Y, C, and Synchronizing Signal Processing ICs
CXA2060AS
CXA2061S
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Reduced peripheral components
count
On-chip 1H delay line
On-chip SECAM decoder
On-chip video switch
Three crystal oscillator pin sets
for PAL-M and PAL-N support
The CXA2060AS and CXA2061S
are pin compatible.
Sony provides an extensive lineup of Y, C, and synchronizing signal
processing ICs (YCD).
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■
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These ICs take advantage of earlier TV ICs and in addition adopt new
technologies to incorporate even more peripheral components and
functionality in the same chip.
The CXA2060AS supports NTSC, PAL (including PAL-M and PAL-N),
and SECAM, whereas the CXA2061S is a special-purpose NTSC YCD
chip.
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Thus the pin compatible CXA2060AS and CXA2061S support all TV
broadcast regions and can achieve a common chassis worldwide.
this single chip can completely support
all aspects of a color system.
Built-in 1H Delay Line and
SECAM Decoder
Worldwide Horizontal
Deployment
The CXA2060AS includes an on-chip
1H delay line and an on-chip SECAM
decoder. While earlier products such as
the CXA2000Q required an external 1H
delay line for PAL and an external
SECAM decoder for SECAM, by in-
cluding these circuits on chip, the
CXA2060AS allows the same circuit to
provide the different types of signal pro-
cessing required by NTSC, PAL, and
SECAM. This allows the same chassis
to be used for all reception areas, includ-
ing NTSC-only areas, PAL/SECAM
areas, and NTSC/PAL-M/PAL-N areas.
The CXA2060AS is a single-chip Y,C,
and synchronizing signal processing IC
(YCD) that includes both a 1H delay
line and a SECAM decoder on chip, and
the CXA2061S is a special-purpose
NTSC YCD. While it goes without
saying that these chips are pin compat-
ible, their I2C control registers are also
identical, making them software
compatible as well. These two products
were designed to allow a common
chassis to be used in all TV broadcast
regions. Figure 1 shows the block
diagram of the CXA2060AS.
Vertical Deployment
from the Low End to the
High End
Since these chips also provide Y and
color difference signal input/output, a
feature block can be added. Since an fsc
output is provided, a digital comb filter
can be used. Thus these chips support
flexible deployment in higher grade
television systems. The CXA2060AS
and the CXA2061S not only aim for
extensive and complete television
functionality, but also promise the
achievement of a common chassis
worldwide.
Reduced Peripheral
Components Count
Figure 2 presents a sample application
circuit. In addition to the components
used in this system, a video switch, a
1H delay line, and a SECAM decoder
would be required to construct the same
system using earlier products. The
CXA2060AS includes these devices on
chip. (The CXA2061S only includes the
video switch on chip.) Since a high-per-
formance sync separator system for the
input signal is fully included on chip,
no separate sync separator circuit input
signal is required. Additionally, the
sample-and-hold capacitor for the auto-
cutoff circuit (AKB) is built in, and ca-
pacitors and an oscillator element are
not required for the H/V oscillator. Thus
V
O
I
C
E
We are finally seeing the debut
of single-chip support for multi-
format systems! We performed
extensive field testing in devel-
oping this IC, looking for signals
that are difficult to receive in all
corners of the world. As a result,
this IC achieves the best
SECAM discrimination perfor-
mance of the century! Sony’s
engineers strongly recommend
that you try this IC.
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