Bt860/861
5.0 Serial Programming Interface and Registers
5.4 Register Detail
Multiport YCrCb to NTSC/PAL /SECAM
Register 17
Default
Value
Register
17
D7
D6
D5
D4
D3
D2
D1
D0
10
CHROMA_BW BLUE_FLD
Chrominance Bandwidth
OUTMODE[2:0]
DCHROMA
ECBAR
ECLIP
CHROMA_BW
0 = Normal chroma bandwidth.
1 = Wide chroma bandwidth.
See filter plots in Section 3.2.2
BLUE_FLD
Blue Field
0 = Normal operation.
1 = Generate blue field.
OUTMODE[2:0]
DAC Output Format Control
Controls format output on each DAC, as listed in the following table.
Bits
000
001
010
011
100
101
110
111
DAC A
Y
DAC B
DAC C
CVBS
CVBS
CVBS
Y
DAC D
DAC E
V
DAC F
U
C
Y
Y
C
R
G
B
Y
C
CVBS_DLY
CVBS
C
CVBS
C
Y
C
Y
CVBS
CVBS
CVBS
Y
CVBS_DLY
CVBS_DLY
CVBS_DLY
C
CVBS
CVBS
CVBS
CVBS
Y
V
U
R
G
B
CVBS_DLY
CVBS_DLY
CVBS
C
CVBS
Y
NOTE(S): CVBS_DLY is the composite video signal with the luminance component delayed as
controlled by YDELAY.
DCHROMA
ECBAR
Disable Chrominance
0 = Normal operation.
1 = Disable chroma components.
Enable Internal Color Bars
0 = Normal operation.
1 = Enable color bars.
See colorbar plots in Section 3.2.3.
ECLIP
Enable Clipping
0 = Normal operation.
1 = Enable clipping. DAC values less than 64 are made 63. This limit corresponds to roughly
one-fourth of the sync height.
D860DSA
Conexant
5-19
CONEXANT [ CONEXANT SYSTEMS, INC ]
