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

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Video Capture Registers
Table 3-15. Video Capture Channel A Control Register (VCACTL) Field Descriptions (continued)
Description
Bit field
(1)
symval
(1)
Value BT.656 or Y/C Mode Raw Data Mode TCI Mode
19 EXC OF( value) External control select bit. (Channel A only)
DEFAULT 0 Use EAV/SAV codes. Not used. Not used.
EAVSAV
EXTERN 1 Use external control signals. Not used. Not used.
18 FLDD OF( value) Field detect method bit. (Channel A only)
DEFAULT 0 1
st
line EAV or FID input. Not used. Not used.
EAVFID
FDL 1 Field detect logic. Not used. Not used.
17 VRST OF( value) VCOUNT reset method bit.
V1EAV 0 Start of vertical blank (1
st
V = 1 Not used. Not used.
EAV or VCTL2 active edge)
DEFAULT 1 End of vertical blank (1
st
V = 0 Not used. Not used.
EAV or VCTL2 inactive edge)
V0EAV
16 HRST OF( value) HCOUNT reset method bit.
DEFAULT 0 EAV or VCTL1 active edge. Not used. Not used.
EAV
SAV 1 SAV orVCTL1 inactive edge. Not used. Not used.
15 VCEN OF( value) Video capture enable bit. Other bits in VCACTL (except RSTCH and BLKCAP
bits) may only be changed when VCEN = 0.
DEFAULT 0 Video capture is disabled.
DISABLE
ENABLE 1 Video capture is enabled.
14-13 Reserved - 0 Reserved. The reserved bit location is always read as 0. A value written to this
field has no effect.
12 LFDE OF( value) Long field detect enable bit.
DEFAULT 0 Long field detect is disabled. Not used. Not used.
DISABLE
ENABLE 1 Long field detect is enabled. Not used. Not used.
11 SFDE OF( value) Short field detect enable bit.
DEFAULT 0 Short field detect is disabled. Not used. Not used.
DISABLE
ENABLE 1 Short field detect is enabled. Not used. Not used.
10 RESMPL OF( value) Chroma re-sampling enable bit.
DEFAULT 0 Chroma re-sampling is Not used. Not used.
disabled.
DISABLE
ENABLE 1 Chroma is horizontally Not used. Not used.
re-sampled from 4:2:2 co-sited
to 4:2:0 interspersed before
saving to chroma buffers.
9 Reserved - 0 Reserved. The reserved bit location is always read as 0. A value written to this
field has no effect.
8 SCALE OF( value) Scaling select bit.
DEFAULT 0 No scaling Not used. Not used.
NONE
HALF 1 ½ scaling Not used. Not used.
74 Video Capture Port SPRUEM1 – May 2007
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