Texas-instruments TMS320C64x DSP Manual de usuario Pagina 61

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Video Port Control Registers
Video Port2-28 SPRU629
Table 29. Video Port Interrupt Status Register (VPIS) Field Descriptions (Continued)
Bit DescriptionValuesymvalfield
7 LFDA Long field detected on channel A interrupt detected bit. (A long
field is only detected when the VRST bit in VCACTL is cleared to
0; when VRST = 1, a long field is always detected.)
BT.656 or Y/C capture mode LFDA is set when long field
detection is enabled and VCOUNT is not reset before
VCOUNT = YSTOP + 1.
Raw data mode, or TSI capture mode or display mode Not used.
NONE 0 No interrupt is detected.
CLEAR 1 Interrupt is detected. Bit is cleared.
6
SFDA Short field detected on channel A interrupt detected bit.
BT.656 or Y/C capture mode SFDA is set when short field
detection is enabled and VCOUNT is reset before
VCOUNT = YSTOP.
Raw data mode, or TSI capture mode or display mode Not used.
NONE 0 No interrupt is detected.
CLEAR 1 Interrupt is detected. Bit is cleared.
5
VINTA2 Channel A field 2 vertical interrupt detected bit.
BT.656, or Y/C capture mode or any display mode VINTA2 is set
when a vertical interrupt occurred in field 2.
Raw data mode or TSI capture mode Not used.
NONE 0 No interrupt is detected.
CLEAR 1 Interrupt is detected. Bit is cleared.
4
VINTA1 Channel A field 1 vertical interrupt detected bit.
BT.656, or Y/C capture mode or any display mode VINTA1 is set
when a vertical interrupt occurred in field 1.
Raw data mode or TSI capture mode Not used.
NONE 0 No interrupt is detected.
CLEAR 1 Interrupt is detected. Bit is cleared.
For CSL implementation, use the notation VP_VPIS_field_symval
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