3.0 Digital Processing and Functionality
3.2 Effects
Bt860/861
Multiport YCrCb to NTSC/PAL /SECAM
3.2.8 Macrovision Encoding (Bt861 Only)
The anticopy process contained within the Bt861 is implemented according to the
version 7.x. Specification, developed by Macrovision Corporation in Sunnyvale,
California. The Macrovision Anticopy process is available only in the Bt861.
Conexant cannot ship Bt861 encoders to any customer until Macrovision has
licensed that customer. Contact Macrovision Corporation to obtain this license
agreement. Parties who have obtained a Macrovision license may receive the
Bt861 Macrovision Supplement by contacting their local Conexant Sales office.
3.2.9 Outputs
Register field OUTMODE (17[5:3]) is used to select one of eight analog output
configurations, as listed in Table 3-9. All DACs are designed to drive standard
video levels into a combined R
of 37.5 Ω (double-terminated 75 Ω) To
load
minimize supply current, disable unused outputs by setting the corresponding
DIS_DAC_x register bit high.
Table 3-9. DAC Format Options
Bits
DAC A
DAC B
DAC C
DAC D
DAC E
DAC F
000
001
010
011
100
101
110
111
Y
Y
C
CVBS
CVBS
CVBS
Y
Y
V
G
U
B
C
R
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 an optional luminance component
delayed as controlled by the YDELAY register field.
3.2.10 Luminance Delay
Register field YDELAY can be programmed with up to 7 clocks delay on any
DAC with a CVBS_DLY label (see Table 3-9). The programable luminance delay
can be used to correct the high frequency chrominance delay caused by
postfiltering.
3-22
Conexant
D860DSA
CONEXANT [ CONEXANT SYSTEMS, INC ]
