Texas Instruments TMS320C64x DSP - Manual (Page 96)

Raw Data Capture Mode
Video Capture Port 3-34 SPRU629
The 8-bit raw-data mode stores all data in a single FIFO. Four samples are
packed into each word as shown in Figure 3–17.
Figure 3–17. 8-Bit Raw Data FIFO Packing
Raw FIFO
Raw 2 Raw 4 Raw 6 Raw 1 Raw 3 Raw 5 Raw 7 VDIN[9–2] / VDIN[19–12]
VCLKINA / VCLKINB
63 5655 4847 4039 32
Raw 5 Raw 4 Raw 7 Raw 6
Raw 13 Raw 12 Raw 15 Raw 14
Little-Endian Packing
Raw 8 Raw 10 Raw 9 Raw 11 Raw 0
31 2423 1615 8 7 0
Raw 1 Raw 0 Raw 3 Raw 2
Raw 9 Raw 8 Raw 11 Raw 10
Raw FIFO
63 5655 4847 4039 32
Raw 5 Raw 4 Raw 7 Raw 6
Raw 13 Raw 12 Raw 15 Raw 14
Big-Endian Packing
31 2423 1615 8 7 0
Raw 1 Raw 0 Raw 3 Raw 2
Raw 9 Raw 8 Raw 11 Raw 10
The 10-bit raw data mode stores all data into a single FIFO. Two samples are
packed into each word with zero or sign extension as shown in Figure 3–18.
Figure 3–18. 10-Bit Raw Data FIFO Packing
VDIN[9–0] / VDIN[19–10]
VCLKINA / VCLKINB
63 58 57 48 47 42 41 32
0 / SE Raw 15
0 / SE Raw 11
0 / SE Raw 7
0 / SE Raw 3
Y FIFO
Raw 0 Raw 2 Raw 4 Raw 6 Raw 1 Raw 3 Raw 5 Raw 7 Raw 8 Raw 10 Raw 9 Raw 11
0 / SE Raw 14
0 / SE Raw 10
0 / SE Raw 6
0 / SE Raw 2
Little-Endian Packing
31 26 25 16 15 10 9 0
0 / SE Raw 13
0 / SE Raw 9
0 / SE Raw 5
0 / SE Raw 1
0 / SE Raw 12
0 / SE Raw 8
0 / SE Raw 4
0 / SE Raw 0
63 58 57 48 47 42 41 32
0 / SE Raw 15
0 / SE Raw 11
0 / SE Raw 7
0 / SE Raw 3
Y FIFO
0 / SE Raw 14
0 / SE Raw 10
0 / SE Raw 6
0 / SE Raw 2
Big-Endian Packing
31 26 25 16 15 10 9 0
0 / SE Raw 13
0 / SE Raw 9
0 / SE Raw 5
0 / SE Raw 1
0 / SE Raw 12
0 / SE Raw 8
0 / SE Raw 4
0 / SE Raw 0