saa7199b NXP Semiconductors, saa7199b Datasheet - Page 20

• Manufacturer Part Number: saa7199b
• Description: Digital Video Encoder Denc Genlock-capable
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 26 Input data levels for formats 0 to 4 and 5; EBU colour bar; 100% white equals 100 IRE intensity, 5% colour
GENLOCK
Table 27 Format 7; CVBS GENLOCK input data format has an 8-bit word length, the input data comes from an
Note
1. If exactly matched levels are required in the internal multiplexer, the value 0 IRE should correspond to
1996 Sep 27
Y
Cb
Cr
Y
Cb
Cr
R, G and B
CVBS(7-0)
Conditions of CVBS input signal
Sync bottom
0 IRE (black)
100 IRE (white)
Top peak of 75% colour
Bottom peak of 75% colour
Digital Video Encoder (DENC)
GENLOCK-capable
SIGNAL
INPUT
CHANNEL
68 and 100 IRE to 82.
INPUT
saturation for formats 1 to 4, 100% for format 5
analog-to-digital converter (TDA8708) with gain controlled and clamped CVBS or VBS signals
INPUT DATA
CVBS(0)
0
0 IRE
100 IRE
bottom peak
colourless
top peak
bottom peak
colourless
top peak
0 IRE
100 IRE
bottom peak
colourless
top peak
bottom peak
colourless
top peak
0 IRE
100 IRE
LEVEL
CVBS(1)
1
12
230
0
100
0
105
16
235
44
128
212
44
128
212
16
235
DIGITAL LEVEL
CVBS(2)
101
106
2
CLOCK CYCLE (PIXEL SEQUENCE)
CVBS(3)
20
3
offset binary
two’s complement 0
two’s complement 0
offset binary
offset binary
offset binary
offset binary
CODE
CVBS(4)
two’s complement representation
corresponding to binary code 128
corresponding to binary code 64
corresponding to binary code 95
corresponding to binary code 95
corresponding to binary code 100
4
0
1
1
1
1
CVBS(5)
CCRIR-BIT
5
CVBS(6)
Product specification
6
SAA7199B
0 to 4
0 to 4
0 to 4
0 to 4
0 to 4
0 to 4
5
(1)
FORMAT
CVBS(7)
7