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