VDP 3108
Table 2–1:
ADC input range for PAL input Signal
Signal
ADC Range [steps]
–6 dB
CVBS
100% CVBS
75% CVBS
video (luma)
sync
clamp level
Chroma
burst
100% Chroma
75% Chroma
bias level
252 (clipped at 125 IRE)
213
149
64 (AGC reference)
68
64
190
143
128
300
890
670
667
500
350
150
ADVANCE INFORMATION
Input Level [mV
pp
]
0 dB
1333
1000
700
300
+4.5 dB
2238
1679
1175
504
CVBS/Y
upper headroom = 38 steps = 1.4 dB = 25 IRE
255
217
192
Chroma
headroom = 56 steps = 2.1 dB
228
192
white
video = 100 IRE
128
128
black
= clamp
level
68
32
0
80
32
lower headroom = 4 steps = 0.2 dB
Fig. 2–2:
ADC ranges for CVBS/Luma and Chroma, PAL input signal
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MICRONAS INTERMETALL
sync = 41 IRE
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100% Chroma
75% Chroma
burst
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MICRONAS [ MICRONAS ]
