CX25870/871
Appendix E HDTV Output Mode
Flicker-Free Video Encoder with Ultrascale Technology
E.5 Automatic Trilevel Sync Generation
Figure E-3. 1080i and 720p Trilevel Sync provided by CX25870/871
Start
of the
Analog
Line
40T
(for 296M)
40*(1/74.25 MHz) =
538.7 ns
44T
(for 274M)
44*(1/74.25 MHz) =
592.5 ns
650 mV
350 mV
50 mV
44T
(for 274M)
44T
44*(1/74.25 MHz) =
44*(1/74.25 MHz) =
592.5 ns
592.5 ns
70T
(for 296M)
40T
(for 296M)
70*(1/74.25 MHz) =
40*(1/74.25 MHz) =
942.8 ns
538.7 ns
NOTE(S):
1. Trilevel Sync applies to Y P , P output signals as well as HD RGB output signals.
B
R
2. 720p Trilevel Sync timing differences are listed in RED.
100381_032
100381B
Conexant
E-11
CONEXANT [ CONEXANT SYSTEMS, INC ]
