MB87P2020 Datasheet, PDF (323/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

3 Command Description
Command Description
Jasmine command register width is 32 Bit. It is divided into command code and parameters:
31
parameters
7
0
code
Partial writing of command register is supported. Write to ’code’, byte 3 triggers command execution. Not
all commands need parameters. In this case parameter section is ignored.
3.1 Command List
All commands are listed with mnemonic, command code and command parameters (if necessary), com-
mand function, registers evaluated by by the command, source and target for command data (input and out-
put data if required).
Registers shown in table 3-1 are double buffered. Write access during running command is possible without
affecting current operation. Values become valid after next command is started.
Table 3-1: Command List
Mnemonic Code Device
SwReset 00h ULB,
IPA,
PE,
MAU,
MCP,
AAF
PutBM
01h PE
Function
Reset ULB command controller, IPA and
drawing devices of PP, initialize FIFOs
(PP-FIFOs, IFIFO, OFIFO). Only devices
participated on command procession are
initialized.^a
Store an uncompressed bitmap in Video
RAM (finite command).
Source:
IFIFO with n*[bitmap colour data]
n=(Xmax-Xmin+1)*(Ymax-
Ymin+1)*bpp/32
Target:
Video RAM area which is defined by
{Xmax,Xmin}, {Ymax,Ymin},
PPCM_LAY and PPCMD_MIR. Pixel with
IGNORCOL_COL are not written if
IGNORCOL_EN = ’1’.
Registers
-
XYMAX
XYMIN
IGNORCOL_EN
IGNORCOL_COL
PPCMD_LAY
PPCMD_EN
PPCMD_DIR
PPCMD_MIR
IFIFO
Command Description
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