Video Port/VCXO Interpolated Control (VIC) Port User's Guide
3.13.14 TCI System Time Clock LSB Register (TCISTCLKL) ................................................... 86
3.13.15 TCI System Time Clock MSB Register (TCISTCLKM) .................................................. 87
3.13.16 TCI System Time Clock Compare LSB Register (TCISTCMPL) ...................................... 88
3.13.17 TCI System Time Clock Compare MSB Register (TCISTCMPM) ..................................... 88
3.13.18 TCI System Time Clock Compare Mask LSB Register (TCISTMSKL) ............................... 89
3.13.19 TCI System Time Clock Compare Mask MSB Register (TCISTMSKM) .............................. 89
3.13.20 TCI System Time Clock Ticks Interrupt Register (TCITICKS) ......................................... 90
3.14 Video Capture FIFO Registers ..................................................................................... 91
4 Video Display Port .................................................................................................... 92
4.1 Video Display Mode Selection ..................................................................................... 93
4.1.1 Image Timing .................................................................................................... 93
4.1.2 Video Display Counters ........................................................................................ 96
4.1.3 Sync Signal Generation ........................................................................................ 98
4.1.4 External Sync Operation ....................................................................................... 98
4.1.5 Port Sync Operation ............................................................................................ 98
4.2 BT.656 Video Display Mode ........................................................................................ 98
4.2.1 Display Timing Reference Codes ............................................................................ 99
4.2.2 Blanking Codes ................................................................................................ 101
4.2.3 BT.656 Image Display ........................................................................................ 101
4.2.4 BT.656 FIFO Unpacking ..................................................................................... 101
4.3 Y/C Video Display Mode ........................................................................................... 102
4.3.1 Y/C Display Timing Reference Codes ...................................................................... 102
4.3.2 Y/C Blanking Codes .......................................................................................... 102
4.3.3 Y/C Image Display ............................................................................................ 102
4.3.4 Y/C FIFO Unpacking .......................................................................................... 103
4.4 Video Output Filtering .............................................................................................. 103
4.4.1 Output Filter Modes ........................................................................................... 103
4.4.2 Chrominance Re-sampling Operation ...................................................................... 104
4.4.3 Scaling Operation ............................................................................................. 104
4.4.4 Edge Pixel Replication ....................................................................................... 105
4.5 Ancillary Data Display .............................................................................................. 106
4.5.1 Horizontal Ancillary (HANC) Data Display ................................................................. 106
4.5.2 Vertical Ancillary (VANC) Data Display .................................................................... 106
4.6 Raw Data Display Mode ............................................................................................ 106
4.6.1 Raw Mode RGB Output Support ............................................................................ 107
4.6.2 Raw Data FIFO Unpacking .................................................................................. 107
4.7 Video Display Field and Frame Operation ................................................................... 108
4.7.1 Display Determination and Notification ..................................................................... 108
4.7.2 Video Display Event Generation ............................................................................ 109
4.8 Display Line Boundary Conditions ............................................................................. 109
4.9 Display Timing Examples ......................................................................................... 110
4.9.1 Interlaced BT.656 Timing Example ......................................................................... 110
4.9.2 Interlaced Raw Display Example ............................................................................ 113
4.9.3 Y/C Progressive Display Example .......................................................................... 116
4.10 Displaying Video in BT.656 or Y/C Mode ..................................................................... 119
4.11 Displaying Video in Raw Data Mode ........................................................................... 120
4.11.1 Handling Under-run Condition of the Display FIFO ..................................................... 121
SPRUEM1 – May 2007 Contents 5
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