Texas Instruments TMS320C64x DSP Benutzerhandbuch

3-2

The video capture module operates in one of nine modes as listed in
Table 3–1. The transport stream interface (TSI) selection is made using the
TSI bit in the video port control register (VPCTL). The CMODE bits are in the
video capture channel x control register (VCxCTL). The Y/C and 16/20-bit raw
capture modes may only be selected for channel A and only if the DCHNL bit
in VPCTL is cleared to 0.

When operating as a raw video capture channel, no data selection or data
interpretation is performed. The 16/20-bit raw capture mode is designed to
accept data from A/D converters with resolution higher than eight bits (used,
for example, in medical imaging).

0

000

8-Bit ITU-R BT.656
Capture

Digital video input is in YCbCr 4:2:2 with 8-bit
resolution multiplexed in ITU-R BT.656 format.

0

001

10-Bit ITU-R
BT.656 Capture

Digital video input is in YCbCr 4:2:2 with 10-bit
resolution multiplexed in ITU-R BT.656 format.

0

010

8-Bit Raw Capture

Raw 8-bit data capture at sampling rates up to
80 MHz.

0

011

10-Bit Raw Capture Raw 8-bit or 10-bit data capture at sampling rates up

to 80 MHz.

0

100

8-Bit Y/C Capture

Digital video input is in YCbCr 4:2:2 with 8-bit
resolution on parallel Y and Cb/Cr multiplexed
channels.

0

101

10-Bit Y/C Capture

Digital video input is in YCbCr 4:2:2 with 10-bit
resolution on parallel Y and Cb/Cr multiplexed
channels.

0

110

16-Bit Raw Capture Raw 16-bit data capture at sampling rates up to

80 MHz.

0

111

20-Bit Raw Capture Raw 20-bit data capture at sampling rates up to

80 MHz.

1

010

TSI Capture

8-bit parallel TSI capture at rates up to 30 MHz.