camisp-247
Packetfooter(PF)
Packetheader(PH)
Lineblanking
Lineblanking
FS
FS
FE
FE
Blanking lines
Blanking lines
Blanking lines
Frame 1
(odd, frame number = 1)
YUV422 image data
Frame 2
(odd, frame number = 2)
YUV422 image data
Data per line is a multiple of 16 bits (YUV422).
Key:
PH: Packet header
PF: Packet footer
FS: Frame start
FE: Frame end
Lineend(LE)
Linestart(LS)
LS: Line start
LE: Line end
Public Version
Camera ISP Environment
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Figure 6-28. Camera ISP CSI2 Digital Interlaced Video Frame (Informative)
The period between the LEC and the new LSC is the line blanking period. The time between the FEC and
the new FSC is the frame blanking period. The receiver works with the line blanking period set to 0.
6.2.4.5.3 Camera ISP CSI2 Pixel Data Format
6.2.4.5.3.1 Camera ISP CSI2 YUV Pixel Data Format
6.2.4.5.3.1.1 Camera ISP CSI2 YUV420 8-Bit
YUV420 8-bit data can be stored to memory in little-endian format. The line length sent through the CSI2
physical protocol is a multiple of 16 bits for odd lines and 32 bits for even lines.
For correct pixel reconstruction, the line length must be a multiple of 3*32 bits and the number of lines
must be even.
shows the storage format for YUV420 8-bit data.
1120
Camera Image Signal Processor
SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated