Texas Instruments TMS320C64x DSP Benutzerhandbuch
Video Display Mode Selection
4-5
Video Display Port
SPRU629
Figure 4–4. Progressive Blanking Intervals and Video Area
Field 1 Image Width
Field 1
Frame
Field 1 Image Height
Field 1 Vertical Blanking
Field 1 Image Vertical Offset
Field 1 Active Video
4.1.2
Video Display Counters
To generate the image timing, the video display module uses five counters:
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Frame line counter (FLCOUNT)
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Frame pixel counter (FPCOUNT)
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Image line counter (ILCOUNT)
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Image pixel counter (IPCOUNT)
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Video clock counter (VCCOUNT)
The frame line counter (FLCOUNT) counts the total number of lines per frame
including vertical blanking intervals. The frame pixel counter (FPCOUNT)
counts the total number of pixels per line including horizontal blanking inter-
vals. FLCOUNT begins counting at the start of the vertical blanking interval of
the first field. FPCOUNT begins counting at the end of the horizontal blanking
interval of each line. They are reset when they reach their stop values as speci-
fied in the video display frame size register (VDFRMSZ).
including vertical blanking intervals. The frame pixel counter (FPCOUNT)
counts the total number of pixels per line including horizontal blanking inter-
vals. FLCOUNT begins counting at the start of the vertical blanking interval of
the first field. FPCOUNT begins counting at the end of the horizontal blanking
interval of each line. They are reset when they reach their stop values as speci-
fied in the video display frame size register (VDFRMSZ).