MB87P2020 Datasheet, PDF (106/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

MB87J2120, MB87P2020-A Hardware Manual
Table 2-2: Symbols of RLE Compression
Resolution
Mode
RGB888 compressed
uncompressed
Command Byte
Colour Bytes
<1NNN NNNN> 3 bytes colour data (<CCCC CCCC>, <CCCC
CCCC>, <CCCC CCCC>)
<0NNN NNNN> (NNNNNNN + 1)*3 bytes with colour data
(<CCCC CCCC>, <CCCC CCCC>, <CCCC
CCCC>)
PutBM: uncompressed continuous data stream (RGB888)->[colour data]
31
red0
23
green0
15
blue0
7
0
red1
green1
blue1
red2
green2
blue2
red3
green3
blue4
red4
byte3
green4
byte2
blue4
byte1
red5...
byte0
PutCP: compressed continuous data stream (RGB888) ->[coded data]
31
23
command = 84h
red0
command = 02h
red1
red2
green2
green3
byte3
blue3
byte2
15
green0
7
0
blue0
green1
blue1
blue2
red3
command = 8Fh
byte1
red4 ...
byte0
Figure 2-1: Examples of continuous data stream (ULB/MCU side)
2.3 Data Formats for Video RAM / SDC Interface
At the SDC interface all colour formats are possible and supported. Color data is transferred and stored in
MSB aligned form. This is opposite to the IFIFO/OFIFO data at ULB interface.
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