VDP 31xxB
PRELIMINARY DATA SHEET
Table 2–1: ADC input range for PAL input signal and corresponding signal ranges
Signal
Input Level [mV
]
pp
ADC
Range
YC C
r b
Internal
Range
–6 dB
0 dB
1333
1000
700
+4.5 dB
[steps]
[steps]
CVBS
100% CVBS
75% CVBS
video (luma)
sync height
clamp level
burst
667
500
350
150
2238
1679
1175
504
252
213
149
64
–
–
224
300
–
68
16
Chroma
300
890
670
64
–
100% Chroma
75% Chroma
bias level
190
143
128
128±112
128±84
128
CVBS/Y
Chroma
upper headroom = 38 steps = 1.4 dB = 25 IRE
headroom = 56 steps = 2.1 dB
255
217
228
192
white
192
video = 100 IRE
128
68
128
80
black
= clamp
level
sync = 41 IRE
32
0
32
lower headroom = 4 steps = 0.2 dB
Fig. 2–2: ADC ranges for CVBS/Luma and Chroma, PAL input signal
8
Micronas
MICRONAS [ MICRONAS ]
