MB87P2020 Datasheet, PDF (330/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

MB87J2120, MB87P2020-A Hardware Manual
24 1 *
16 2
8
4
4
8
2
16
1
32
* In case of 24 bpp colour data is packet over word boundaries. There are no lower bits left empty
and first pixel is MSB aligned on the 32-bit word grid.
• colour enable data
31
0
P₀
...
P₃₁
(...) Source or Target FIFO data
[...]n Deliver data in ‘[...]’ n times
[...]+ Deliver data in ‘[...]’ at least one time
• {L,X,Y} Pixel coordinates, point definition
31 29
32
x coordinate
15 13
10
0
y coordinate
Layer (to be ignored if layer register exists)
If L is not stated i.e. in {X,Y} form, information in bits 31, 30, 15, 14 kept as don’t care.
3.2 Command and I/O Control
Command queue consits of two registers, an internal actual processed command and an additional buffer
for the next planned command. Before writing to command register the FLNOM_CWEN (command write
enable) flag polling is required to ensure that the new command can be written. All execution devices pro-
vide ready or busy information via FLNOM flag register. Normally this dedicated device information is not
needed to evaluate. Command controller takes care on operation.
Also the IFIFO and OFIFO has its status flags in FLNOM. These are usable for I/O flow control by polling
or interrupt. Additional DMA support is possible to transfer data from/to the FIFOs.
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