MB86294 Datasheet, PDF (216/305 Pages) Fujitsu Component Limited. – Grraphiics Controller specifications

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
11.2.5 Drawing control registers
CTR (Control Register)
Register
address
DrawBaseAddress + 400H
Bit number 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit field name
FO CE
FCNT
NF FF FE
SS
DS
PS
R/W
Initial value
RW RW RW
R
R RR
R
R
R
00 0
011101
0 01
00
00
00
This register indicates drawing flags and status information. Bits 24 to 22 are not cleared until 0 is set.
Bit 1 and 0
PS (Pixel engine Status)
Indicate status of pixel engine unit
00 Idle
01 Busy
10 Reserved
11 Reserved
Bit 5 and 4
DS (DDA Status)
Indicate status of DDA
00 Idle
01 Busy
10 Busy
11 Reserved
Bit 9 and 8
SS (Setup Status)
Indicate status of Setup unit
00 Idle
01 Busy
10 Reserved
11 Reserved
Bit 12
FE (FIFO Empty)
Indicates whether data contained or not in display list FIFO
0 Valid data
1 No valid data
Bit 13
FF (FIFO Full)
Indicates whether display list FIFO is full or not
0 Not full
1 Full
Bit 14
NF (FIFO Near Full)
Indicates how empty the display list FIFO is
MB86294/294S CORAL_LB
Graphics Controller
216
Specifications Rev. 1.0