MB87P2020 Datasheet, PDF (105/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

Pixel Processor
Table 2-1: Mnemonics and Symbols
Mnemonic & Symbols
Description
(...)
data package:
It consists of one or more 32bit data words, which contain all necessary in-
formation for the current command.
e.g. ([X, Y], [L_high, X, L_low, Y])
This is the data (start point, end point and layer) for the command DwLine,
two data words are used.
2.2 Data Formats at ULB Interface
Color data at ULB interface (IFIFO/OFIFO) and for configuration registers is LSB aligned. Only data for
PutPxWd is an exceptional case, it delivers data in physical form as stored in Video RAM.
The ULB delivers data in three formats:
— pixel addresses
— single pixel data: all single colour data is rigth aligned in the data word; the number of used bits
depends on the colour depth.
— pixel data stream (compressed or decompressed):
Table 2-2: Symbols of RLE Compression
Resolution
Mode
bpp1
compressed
uncompressed
bpp2
compressed
uncompressed
bpp4
compressed
uncompressed
bpp8
compressed
uncompressed
RGB555,
RGB565
compressed
uncompressed
Command Byte
Colour Bytes
<1NNN NNNC> colour information in command byte (bit[0])
<0NNN NNNN>
(NNNN NNN+1 mod 8) bytes with colour data
<CCCC CCCC>
(NNNNNNN+1 rem 8) > 0: last byte may be
incomplete; e.g. 4: <CCCC xxxxx>
<1NNN NNNN> 1 byte incomplete <CCxx xxxx>
<0NNN NNNN>
(NNNNNNN+1 mod 4) bytes with colour data
<CCCC CCCC>
(NNNNNNN+1 rem 4) > 0: last byte may be
incomplete; e.g. 2: <CCCC xxxxx>
<1NNN NNNN> 1 byte incomplete <CCCC xxxx>
<0NNN NNNN>
(NNNNNNN+1 mod 2) bytes with colour data
<CCCC CCCC>
(NNNNNNN+1 rem 2) > 0: last byte may be
incomplete; e.g. 1: <CCCC xxxxx>
<1NNN NNNN> 1 colour byte <CCCC CCCC>
<0NNN NNNN> (NNNNNNN + 1) bytes with colour data
<CCCC CCCC>
<1NNN NNNN> 2 bytes colour data (<CCCC CCCC>, <CCCC
CCCC>)
<0NNN NNNN> (NNNNNNN + 1)*2 bytes with colour data
(<CCCC CCCC>, <CCCC CCCC>)
Format Definitions
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