Texas Instruments TVP5154EVM 사용자 설명서
www.ti.com
9.2.3
DM642 Virtual I
2
C Register Details
Quad 1
Quad 2
Quad 3
Quad 4
Decoder 1
Scaled
Decoder 2
Unscaled
Decoder 2
Unscaled
Decoder 4
Scaled
Programming the TMS320DM642
Table 10. Decoder 1 Register
Address
00h
Default
02h
7
6
5
4
3
2
1
0
Capture
Reserved
Position
Capture Size
Enable
Capture Size
Bit 2
Bit 1
Bit 0
Unscaled
0
0
0
QSIF – 176
×
120
0
0
1
SIF – 352
×
240 (1/4 NTSC)
0
1
0
(default)
QCIF – 176
×
144
0
1
1
CIF – 352
×
288 (1/4 PAL)
1
0
0
QVGA – 320
×
240
1
0
1
VGA – 640
×
480
1
1
0
Reserved
1
1
1
Capture Enable
Bit 3
Disable (default)
0
Enable
1
Position
Bit 5
Bit 4
Quadrant 1 (default)
0
0
Quadrant 2
0
1
Quadrant 3
1
0
Quadrant 4
1
1
Scaled capture sizes always take priority over unscaled capture sizes.
Decoder priorities are always such that Decoder 1 is the highest priority, Decoder 2 is the second highest,
etc.
etc.
For example, if Decoders 1 and 4 are scaled to 1/4 size and Decoders 2 and 3 are unscaled, this display
results:
results:
28
TVP5154EVM User's Guide
SLEU069A – February 2006 – Revised July 2006