MB87P2020 Datasheet, PDF (114/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

MB87J2120, MB87P2020-A Hardware Manual
• RGB555: for all colour channels only the bit]7:3] are used for calculation
1.3 Application Notes
1.3.1 Restrictions due to Usage of AAF
The AAF does not support all modes of the PP and SDC functionality. For the using of AAF note there are
some restrictions, which are descibed in this section.
Table 1-3 shows all pixel processor commands, which can be used or are not allowed to be used or make
no sense commonly used with the AAF.
Table 1-3: Support of PP commands
Command
DwLine, DwPoly,
DwRect, PutBM,
PutCP, PutTxtBm,
PutTxtCP, PutTxtCP,
PutPixel, PutPxFC
XChPixel
Access Mode
write (block mode)
read-modify-write
(block mode)
GetPixel
only read
(block mode)
Comment
pixel address manipulation (sub pixel access ^a) and
pixel data manipulation
pixel address manipulation (sub pixel access), no pixel
data manipulation for read data and pixel data manip-
ulation for write data
Note!
The RDATA information is stored in the ULB output
Fifo.
Do not use this command with enabled AAF!
no pixel address manipulation (real pixel access ^b) and
no pixel data manipulation;
Note!
The RDATA information is stored in the ULB output
Fifo.
Do not use this command wih enabled AAF!
MemCP
sequential read and
write (block mode)
read access: like GetPixel
write access: like PutPixel
Note!
Make sure that the source area does not overlap with
the target area!
PutPxWd
write (burst mode) Prohibition! (did not work)
a. Sub pixel access means that the pixel processor wants to read or write into the sub pixel space, which have the
double resolution in horizontal and vertical direction (one real pixel on the display/layer have four sub pixel).
b. Real pixel access means that the pixel processor wants to read or write a real pixel (a physical pixel) of a the
display/layer.
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