MB87P2020 Datasheet, PDF (291/356 Pages) Fujitsu Component Limited. – Colour LCD/CRT/TV Controller

1 Register Description
Register Description
Table 1-2 shows all registers and bit groups of MB87P2020-A (Jasmine) and MB87J2120 (Lavender) with
a short explanation. A more detailed description can be found in the component specific manual parts.
In table 1-2 valid registers or bitgroups for every device are marked in additional columns. Some registers
or bitgroups are listed twice, separated for every device, since they are different for Lavender and Jasmine.
Additionaly some special registers exist which are marked in table 1-2 with a special code explained in
table 1-1.
Table 1-1: Marking for special registers
Mark
R
W
F
M
C
D
Description
Read only register or bitgroup
Write only register or bitgroup
Hardware flag (value can be manipulated by hardware)
Register write access is locked if MTIMON_ON=1 (GPU master switch)
These registers have an internal shadow register which is synchronized to command
execution. If a command is running the shadow register is locked, written values are
stored and take effect only when next command is started.
For reading always the user writeable register is returned.
Like ’C’ but reading is configurable with READINIT_RCR
Table 1-2: Register address space for Jasmine and Lavender
Register
Bits Group
Name Address
Name
Description
Default
value
CMD
IFIFO
OFIFO
FLNOM
FLRST
0x0000
0x0004
0x0008
0x000C
0x0010
ULB (User Logic Bus Controller)
Command register
31:8 PAR
o o C Command parameter
7:0 CODE
o o C Command code
(for writing check
FLNOM_CWEN)
31:0 -
o o W Input FIFO
Only word access is allowed.
31:0 -
o o R Output FIFO
Only word access is allowed.
31:0 -
o o F Flag register (normal write
access)^a
31:0 -
o o F Flag register (reset write
access)^a
1: Reset flag at this position
0
0xFF (NoOp)
-
-
0x20400000
0x20400000
Register Description
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