www.ti.com
3.13.1 Video Capture Channel x Status Register (VCASTAT, VCBSTAT)
Video Capture Registers
Table 3-13. Video Capture Control Registers (continued)
Offset
Address
(1)
Acronym
Register Name
Section
154h
VCBSTOP2
Video Capture Channel B Field 2 Stop Register
158h
VCBVINT
Video Capture Channel B Vertical Interrupt Register
15Ch
VCBTHRLD
Video Capture Channel B Threshold Register
160h
VCBEVTCT
Video Capture Channel B Event Count Register
180h
TCICTL
TCI Capture Control Register
184h
TCICLKINITL
TCI Clock Initialization LSB Register
188h
TCICLKINITM
TCI Clock Initialization MSB Register
18Ch
TCISTCLKL
TCI System Time Clock LSB Register
190h
TCISTCLKM
TCI System Time Clock MSB Register
194h
TCISTCMPL
TCI System Time Clock Compare LSB Register
198h
TCISTCMPM
TCI System Time Clock Compare MSB Register
19Ch
TCISTMSKL
TCI System Time Clock Compare Mask LSB Register
1A0h
TCISTMSKM
TCI System Time Clock Compare Mask MSB Register
1A4h
TCITICKS
TCI System Time Clock Ticks Interrupt Register
The video capture channel x status register (VCASTAT, VCBSTAT) indicates the current status of the
video capture channel.
In BT.656 capture mode, the VCXPOS and VCYPOS bits indicate the HCOUNT and VCOUNT values,
respectively, to track the coordinates of the most recently received pixel. The F1C, F2C, and FRMC bits
indicate completion of fields or frames and may need to be cleared by the DSP for capture to continue,
depending on the selected frame capture operation (see
).
In raw data and TCI modes, the VCXPOS and VCYPOS bits reflect the lower and upper 12 bits,
respectively, of the 24-bit data counter that tracks the number of received data samples. The FRMC bit
indicates when an entire data packet has been received and may need to be cleared by the DSP for
capture to continue, depending on the selected frame operation (see
and
The video capture channel x status register (VCxSTAT) is shown in
and described in
.
Figure 3-21. Video Capture Channel x Status Register (VCxSTAT)
31
30
29
28
27
16
FSYNC
FRMC
F2C
F1C
VCYPOS
R-0
R/WC-0 R/WC-0 R/WC-0
R-0
15
13
12
11
0
Reserved
VCFLD
VCXPOS
R-0
R-0
R-0
LEGEND: R = Read only; WC = Write 1 to clear, a write of 0 has no effect; -n = value after reset
SPRUEM1 – May 2007
Video Capture Port
71