Video Port/VCXO Interpolated Control (VIC) Port User's Guide

3.3.3 Y/C Image Window and Capture ............................................................................. 50
3.3.4 Y/C FIFO Packing .............................................................................................. 51
3.4 BT.656 and Y/C Mode Field and Frame Operation .......................................................... 51
3.4.1 Capture Determination and Notification ..................................................................... 52
3.4.2 Vertical Synchronization ....................................................................................... 53
3.4.3 Horizontal Synchronization .................................................................................... 55
3.4.4 Field Identification .............................................................................................. 56
3.4.5 Short and Long Field Detect .................................................................................. 57
3.5 Video Input Filtering .................................................................................................. 57
3.5.1 Input Filter Modes .............................................................................................. 58
3.5.2 Chrominance Re-sampling Operation ....................................................................... 58
3.5.3 Scaling Operation ............................................................................................... 58
3.5.4 Edge Pixel Replication ......................................................................................... 59
3.6 Ancillary Data Capture ............................................................................................... 60
3.6.1 Horizontal Ancillary (HANC) Data Capture .................................................................. 61
3.6.2 Vertical Ancillary (VANC) Data Capture ..................................................................... 61
3.7 Raw Data Capture Mode ............................................................................................. 61
3.7.1 Raw Data Capture Notification ................................................................................ 61
3.7.2 Raw Data FIFO Packing ....................................................................................... 62
3.8 TCI Capture Mode ...................................................................................................... 63
3.8.1 TCI Capture Features .......................................................................................... 63
3.8.2 TCI Data Capture ............................................................................................... 63
3.8.3 TCI Capture Error Detection .................................................................................. 64
3.8.4 Synchronizing the System Clock ............................................................................. 64
3.8.5 TCI Data Capture Notification ................................................................................. 65
3.8.6 Writing to the FIFO ............................................................................................. 66
3.8.7 Reading from the FIFO ........................................................................................ 66
3.9 Capture Line Boundary Conditions .............................................................................. 67
3.10 Capturing Video in BT.656 or Y/C Mode ....................................................................... 67
3.10.1 Handling FIFO Overrun in BT.656 or Y/C Mode .......................................................... 68
3.11 Capturing Video in Raw Data Mode ............................................................................. 68
3.11.1 Handling FIFO Overrun Condition in Raw Data Mode ................................................... 69
3.12 Capturing Data in TCI Capture Mode ............................................................................ 69
3.12.1 Handling FIFO Overrun Condition in TCI Capture Mode ................................................. 70
3.13 Video Capture Registers ............................................................................................ 70
3.13.1 Video Capture Channel x Status Register (VCASTAT, VCBSTAT) .................................... 71
3.13.2 Video Capture Channel A Control Register (VCACTL) ................................................... 72
3.13.3 Video Capture Channel x Field 1 Start Register (VCxSTRT1) .......................................... 75
3.13.4 Video Capture Channel x Field 1 Stop Register (VCxSTOP1) .......................................... 76
3.13.5 Video Capture Channel x Field 2 Start Register (VCxSTRT2) .......................................... 77
3.13.6 Video Capture Channel x Field 2 Stop Register (VC xSTOP2) .......................................... 78
3.13.7 Video Capture Channel x Vertical Interrupt Register (VCxVINT) ....................................... 79
3.13.8 Video Capture Channel x Threshold Register (VCATHRLD, VCBTHRLD) ............................ 80
3.13.9 Video Capture Channel x Event Count Register (VCxEVTCT) .......................................... 81
3.13.10 Video Capture Channel B Control Register (VCBCTL) ................................................. 81
3.13.11 TCI Capture Control Register (TCICTL) .................................................................. 84
3.13.12 TCI Clock Initialization LSB Register (TCICLKINITL) ................................................... 85
3.13.13 TCI Clock Initialization MSB Register (TCICLKINITM) .................................................. 86
4 Contents SPRUEM1 – May 2007
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