Texas Instruments OMAP36 Series, Техническое справочное руководство

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camisp-183
Transmitter
31 0
FIFO
Data mem org
Time
YUV420
u0 u1 u2 u3 u4 u5 u6 u7 y0 y1 y2 y3 y4 y5 y6 y7 y0 y1 y2 y3 y4 y5 y6 y7
y7 y6 y5 y4 y3 y2 y1 y0
y7 y6 y5 y4 y3 y2 y1 y0 u7 u6 u5 u4 u3 u2 u1 u0
u
1
y
1
y
2
u
3
y
2
y
1
y0 y1 y2 y3 y4 y5 y6 y7 y0 y1 y2 y3 y4 y5 y6 y7
y
3
y
4
u
5
y
5
y0 y1 y2 y3 y4 y5 y6 y7 y0 y1 y2 y3 y4 y5 y6 y7
y
6
u
7
y
7
y
8
31 0
y7 y6 y5 y4 y3 y2 y1 y0 y7 y6 y5 y4 y3 y2 y1 y0 y7 y6 y5 y4 y3 y2 y1 y0
y
5
u
5
y
4
y
3
31 0
y7 y6 y5 y4 y3 y2 y1 y0 y7 y6 y5 y4 y3 y2 y1 y0 u7 u6 u5 u4 u3 u2 u1 u0
y
8
y
7
u
7
y
6
u0 u1 u2 u3 u4 u5 u6 u7
y0 y1 y2 y3 y4 y5 y6 y7
y0 y1 y2 y3 y4 y5 y6 y7 u0 u1 u2 u3 u4 u5 u6 u7
u0 u1 u2 u3 u4 u5 u6 u7
y7 y6 y5 y4 y3 y2 y1 y0 u7 u6 u5 u4 u3 u2 u1 u0
u7 u6 u5 u4 u3 u2 u1 u0
Receiver
t0
t31
t32
t63
t64
t95
First two pixels of first odd line are: {y
1,
v
1
,u
1
} and {y
2,
v
1
,u
1
}
First two pixels of first even line are: {y
n+1,
v
1
,u
1
} and {y
n+2,
v
1
,u
1
}
u
3
u
1
Odd lines
Even lines
Picture width = n
y
+
u
+
y
+
…
…
…
P
ic
tu
re
h
e
ig
h
t
v
+
u
+
y
+
v
+
y
++
y
+
y
++
+
y
++ +
y
++ +
y
+++ +
u
+
y
+++ +
…
… v
++
u
++ +
y
+++ +
v
+
y
+++ +
y
+++ +
y
+++ +
y
+++ +
y
+++ +
Transmitted frame
Public Version
Camera ISP Environment
www.ti.com
Figure 6-10. Camera ISP CSI1/CCP2 YUV420
6.2.4.4.1.2 Camera ISP CSI1/CCP2 RGB Pixel Data Formats
RGB888 data format can be output to memory in two formats: with no data expansion and with data
expansion.
If data expansion is used, the value of the 8 upper bits is programmable and can be set with an alpha
value for computer graphics applications. The line length sent through the associated PHY is a multiple of
32 bits. Furthermore, the line length is a multiple of 3 x 32 bits to correctly finish pixel reconstruction.
Figure 6-11 shows an example of RGB888 format.
1104 Camera Image Signal Processor SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated