AT91SAM9XE128-QU Atmel, AT91SAM9XE128-QU Datasheet - Page 757

• Manufacturer Part Number: AT91SAM9XE128-QU
• Description: MCU ARM9 128K FLASH 208-PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9XE128-QU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: 2-Wire, EBI, I2S, SPI, USART
• Maximum Clock Frequency: 180 MHz
• Number Of Programmable I/os: 96
• Number Of Timers: 6
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM9XE-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM9XE-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• For Use With: AT91SAM9XE-EK - KIT EVAL FOR AT91SAM9XEAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

41.3.5
41.3.5.1
6254C–ATARM–22-Jan-10
Codec Path
Color Space Conversion
Figure 41-6. Three Frame Buffers Application and Memory Mapping
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 are given below:
frame n-1
LCD
AT91SAM9XE128/256/512 Preliminary
⎧
⎪
⎨
⎪
⎩
Y
C
C
Codec Request
frame n
r
b
=
=
=
C
C
0,257
Y
0,439
–
b
r
0,148
=
⋅
⋅
–
C
C
R
⋅
C
frame n+1
R
0
3
+
6
R
–
0,504
–
–
–
C
0,368
C
C
0,291
1
4
7
–
C
C
C
⋅
⋅
2
8
⋅
5
G
G
frame n+2
G
×
+
–
Codec Done
+
0,098
0,071
G
R
B
0,439
+
⋅
Cb
⋅
Cr
Y
⋅
B
B
off
off
B
off
+
frame n+3
+
+
16
128
128
Memory Space
Frame Buffer 3
Frame Buffer 0
Frame Buffer 1
ISI config Space
4:2:2 Image
Full ROI
frame n+4
757