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Application Note 60
TMC22x5y input data ranges
There is no fixed input data range to the TMC22x5y family
of digital decoders, as the programmable output matrix
allows up to 6dB of gain on the luminance and color differ-
ence signals. The following data ranges for 100% composite
and YC color bar inputs is for reference only.
Color
bar
white
Yellow
Cyan
Green
Magenta
Red
Blue
Pedestal
Figure 1: Composite video waveform
NTSC/M
Y
824
762
663
601
507
445
345
284
240
0
6
±
±
±
±
±
±
±
PAL/I
C
0
242
341
319
319
341
242
0
0
117
0
Y
828
763
657
592
492
426
321
n/a
256
0
10
±
±
±
±
±
±
±
C
0
257
362
338
338
362
257
n/a
0
122
0
Blanking
Burst
sync tip
Table 1: 10 bit composite input data ranges
Color
bar
white
Yellow
Cyan
Green
Magenta
Red
Blue
Pedestal
Blanking
Figure 2: YC video waveforms
NTSC/M
Y
1008
933
811
735
620
545
433
348
294
0
8
±
±
±
±
±
±
±
PAL/I
C
0
347
488
456
456
488
347
0
0
167
0
Y
1008
928
799
719
597
517
388
n/a
308
0
8
±
±
±
±
±
±
±
C
0
355
499
467
467
499
355
n/a
0
170
0
Burst
sync tip
Table 2: 10 bit YC input data ranges
AN60
APPLICATION NOTE
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
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Ó
1998 Fairchild Semiconductor Corporation
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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