Datasheet

SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
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37.5.1.3 Channel-U
This block stores the base address and the number of words transferred for this channel (frame in single scan
mode and Upper Panel in dual scan mode) since the beginning of the frame. It also generates the end of frame
signal.
It has two pointers, the base address and the number of words to transfer. When the module receives a
new_frame signal, it reloads the number of words to transfer pointer with the size of the frame/panel. When the
module receives the new_frame signal, it also reloads the base address with the base address programmed by the
host.
The size of the frame/panel can be programmed in the FRMSIZE field of the DMAFRMCFG Register. This size is
calculated as follows:
where:
 Display_size =Horizontal_display_size x Vertical_display_size
 Bpp is the bits per pixel configuration
37.5.1.4 Channel-L
This block has the same functionality as Channel-U, but for the Lower Panel in dual scan mode only.
37.5.1.5 Control
This block receives the request signals from the LCDC core and generates the requests for the channels.
37.5.2 LCD Controller Core
37.5.2.1 Configuration Block
The configuration block is a set of programmable registers that are used to configure the LCDC core operation.
These registers are written via the AHB slave interface. Only word access is allowed.
The description of the configuration registers can be found in “LCD Controller (LCDC) User Interface” on page 644.
37.5.2.2 Datapath
The datapath block contains five submodules: FIFO, Serializer, Palette, Dithering and Shifter. The structure of the
datapath is shown in Figure 37-2.
Frame_size
Display_size Bpp×
32
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