Datasheet

19
SLES084C − August 2007 TVP5146
Table 2−2. Summary of Line Frequencies, Data Rates, and Pixel/Line Counts
STANDARDS
PIXELS PER
LINE
ACTIVE PIXELS
PER LINE
LINES PER
FRAME
PIXEL
FREQUENCY
(MHz)
COLOR
SUBCARRIER
FREQUENCY (MHz)
HORIZONTAL
LINE RATE (kHz)
601 sampling
NTSC-J, M 858 720 525 13.5 3.579545 15.73426
NTSC-4.43 858 720 525 13.5 4.43361875 15.73426
PAL-M 858 720 525 13.5 3.57561149 15.73426
PAL-60 858 720 525 13.5 4.43361875 15.73426
PAL-B, D, G, H, I 864 720 625 13.5 4.43361875 15.625
PAL-N 864 720 625 13.5 4.43361875 15.625
PAL-Nc 864 720 625 13.5 3.58205625 15.625
SECAM 864 720 625 13.5
Dr = 4.406250
Db = 4.250000
15.625
Square sampling
NTSC-J, M 780 640 525 12.2727 3.579545 15.73426
NTSC-4.43 780 640 525 12.2727 4.43361875 15.73426
PAL-M 780 640 525 12.2727 3.57561149 15.73426
PAL-60 780 640 525 12.2727 4.43361875 15.73426
PAL-B, D, G, H, I 944 768 625 14.75 4.43361875 15.625
PAL-N 944 768 625 14.75 4.43361875 15.625
PAL-Nc 944 768 625 14.75 3.58205625 15.625
SECAM 944 768 625 14.75
Dr = 4.406250
Db = 4.250000
15.625
2.5.1 Fast Switches for SCART
The TVP5146 decoder supports the SCART interface used in European audio/video end
equipment to carry composite video, S-video, and RGB video on the same cable. In the event
that composite video and RGB video are present simultaneously on the video terminals
assigned to a SCART interface, the TVP5146 decoder assumes they are pixel synchronous to
each other. The timing for both composite video and RGB video is obtained from the composite
source, and its derived clock is used to sample RGB video as well. The fast-switch input terminal
allows switching between these two input video sources on a pixel-by-pixel basis. The fast
switch is a hard switch; there is no alpha blending between both sources.
2.5.2 Separate Syncs
VS, HS, and VBLK are independently software programmable to a 1× pixel count. This allows
any possible alignment to the internal pixel count and line count. The default settings for 525-line
and 625-line video outputs are given as examples below. FID changes at the same transient
time when the trailing edge of vertical sync occurs. The polarity of FID is programmable by an
I
2
C interface.