AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 1102

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

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

45.6.2.3
45.6.2.4
1102
AT91SAM9G45
FIFO
Serializer
These parameters are different for the different configurations of the LCD Controller and are
shown in
Table 45-4.
The FIFO block buffers the input data read by the DMA module. It contains two input FIFOs to
be used in Dual Scan configuration that are configured as a single FIFO when used in single
scan configuration.
The size of the FIFOs allows a wide range of architectures to be supported.
The upper threshold of the FIFOs can be configured in the FIFOTH field of the LCDFIFO regis-
ter. The LCDC core will request a DMA transfer when the number of words in each FIFO is less
than FIFOTH words. To avoid overwriting in the FIFO and to maximize the FIFO utilization, the
FIFOTH should be programmed with:
where:
This block serializes the data read from memory. It reads words from the FIFO and outputs pix-
els (1 bit, 2 bits, 4 bits, 8 bits, 16 bits or 24 bits wide) depending on the format specified in the
PIXELSIZE field of the LCDCON2 register. It also adapts the memory-ordering format. Both big-
endian and little-endian formats are supported. They are configured in the MEMOR field of the
LCDCON2 register.
The organization of the pixel data in the memory depends on the configuration and is shown in
Table 45-5
Note:
TFT
STN Mono
STN Mono
STN Mono
STN Mono
STN Color
STN Color
STN Color
STN Color
• 512 is the effective size of the FIFO in Words. It is the total FIFO memory size in single scan
• DMA_burst_length is the burst length of the transfers made by the DMA in Words.
mode and half that size in dual scan mode.
DISTYPE
FIFOTH (in Words) = 512 - (2 x DMA_BURST_LENGTH + 3)
For a color depth of 24 bits per pixel there are two different formats supported: packed and
unpacked. The packed format needs less memory but has some limitations when working in 2D
addressing mode
Table
and
Datapath Parameters
45-4.
Table
SCAN
Single
Single
Dual
Dual
Single
Single
Dual
Dual
Configuration
45-7.
(See “2D Memory Addressing” on page
IFWIDTH
4
8
8
16
4
8
8
16
initial_latency
9
13
17
17
25
11
12
14
15
1122.).
cycles_per_data
1
4
8
8
16
2
3
4
6
6438F–ATARM–21-Jun-10