参数资料
型号: TVP5150PBSR
厂商: TEXAS INSTRUMENTS INC
元件分类: 颜色信号转换
英文描述: COLOR SIGNAL DECODER, PQFP32
封装: GREEN, PLASTIC, TQFP-32
文件页数: 16/68页
文件大小: 917K
代理商: TVP5150PBSR
Functional Description
17
May 2006
SLES043A
NTSC 601
1436
PAL 601
1436
ITU 656
Datastream
Cb
359
1437
Y
718
1438
Cr
359
1439
Y
719
1440
FF
1441
00
1455
1459
10
1456
1460
80
HSYNC
AVID
ITUR BT.656 timing shown without embedded syncs.
1583
1587
10
1584
1588
80
1711
1723
10
1712
1724
FF
1713
1725
00
1714
1726
00
1715
1727
XX
0
Cb
0
NOTE: AVID rising edge occurs 4 SCLK cycles early when in ITUR BT.656 output
mode.
1
Y
0
2
Cr
0
3
Y
1
← 0 → +
AVID Stop
← 0 → +
AVID Start
← 0 → +
HSYNC Start
Figure 310. Horizontal Synchronization Signals
3.16 AVID Cropping
AVID or active video cropping provides a means to decrease bandwidth of the video output. This is
accomplished by horizontally blanking a number of AVID pulses and by vertically blanking a number of lines
per frame. The horizontal AVID cropping is controlled using registers 11h and 12h for start pixels MSB and
LSB, respectively.
Registers 13h and 14h provide access to stop pixels MSB and LSB, respectively. The vertical AVID cropping
is controlled using the vertical blanking (VBLK) start and stop registers at addresses 18h and 19h. Figure 311
shows an AVID application.
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