VDP31XXB Datasheet, PDF (8/72 Pages) Micronas – Video Processor Family

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
CVBS
Chroma
100% CVBS
75% CVBS
video (luma)
sync height
clamp level
burst
100% Chroma
75% Chroma
bias level
–6 dB
667
500
350
150
0 dB
1333
1000
700
300
+4.5 dB
2238
1679
1175
504
300
890
670
[steps]
252
213
149
64
68
64
190
143
128
YC_rC_b
Internal
Range
[steps]
–
–
224
–
16
–
128±112
128±84
128
CVBS/Y
ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ^{upper headroom = 38 steps = 1.4 dB = 25 IRE}
255
217
white
192
video = 100 IRE
128
Chroma
ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ ^{headroom = 56 steps = 2.1 dB}
228
192
128
black
68
= clamp
level
sync = 41 IRE
ÍÍÍÍÍÍÍÍÍ ³²
0
lower headroom = 4 steps = 0.2 dB
80
32 _{ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ}
Fig. 2–2: ADC ranges for CVBS/Luma and Chroma, PAL input signal
8
Micronas