AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 903
AT91SAM9G45-EKES
Manufacturer Part Number
AT91SAM9G45-EKES
Description
KIT EVAL FOR AT91SAM9G45
Manufacturer
Atmel
Series
AT91SAM Smart ARMr
Type
MCUr
Datasheets
1.AT91SAM9G45-EKES.pdf
(56 pages)
2.AT91SAM9G45-EKES.pdf
(1218 pages)
3.AT91SAM9G45-EKES.pdf
(66 pages)
Specifications of AT91SAM9G45-EKES
Contents
Board
Processor To Be Evaluated
SAM9G45
Data Bus Width
32 bit
Interface Type
I2C, SPI, UART
Maximum Operating Temperature
+ 50 C
Minimum Operating Temperature
- 10 C
Operating Supply Voltage
1.8 V to 3.3 V
For Use With/related Products
AT91SAM9G45
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
Q4626953
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- Download datasheet (19Mb)
Figure 39-6. Three Frame Buffers Application and Memory Mapping
39.4.5
39.4.5.1
6438F–ATARM–21-Jun-10
Codec Path
Color Space Conversion
n+1 is mapped to frame buffer 1, frame n+2 is mapped to Frame buffer 2, further frames wrap. A
codec request occurs, and the full-size 4:2:2 encoded frame is stored in a dedicated memory
space.
Depending on user selection, this module can be bypassed so that input YCrCb stream is
directly connected to the format converter module. If the RGB input stream is selected, this mod-
ule converts RGB to YCrCb color space with the formulas given below:
An example of coefficients is given below:
C
C
Y
C
C
Y
frame n-1
b
r
r
b
=
=
=
=
0.257 R
0.439 R 0.368 G
–
0.148 R
–
LCD
C
C
C
0
3
6
–
–
C
C
C
Codec Request
frame n
+
1
–
4
7
0.504 G
–
–
0.291 G
C
C
C
2
8
5
G
R
B
+
–
+
0.098 B
frame n+1
+
0.071 B
0.439 B
Cb
Cr
Y
off
off
off
+
+
+
16
128
128
frame n+2
Codec Done
frame n+3
Memory Space
Frame Buffer 3
Frame Buffer 0
Frame Buffer 1
ISI config Space
4:2:2 Image
Full ROI
frame n+4
AT91SAM9G45
903
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