MFC2000 Datasheet, PDF (223/426 Pages) List of Unclassifed Manufacturers – Multifunctional Peripheral Controller 2000

Hardware Description
MFC 2000 Multifunctional Peripheral Controller 2000
Bi-level Resolution Conversion Control Register:
Address:
Bi-level Res.
Conversion
Control
(BiResConCtrl)
01FF807F
Address:
Bi-level Res.
Conversion
Control
(BiResConCtrl)
01FF807E
Bit 15
Bit 14
Bit 13
Bit 12
(Not Used) (Not Used) (Not Used) (Not Used)
Bit 11
(Not Used)
Bit 10
(Not Used)
Bit 9
(Not Used)
Bit 8
Default:
Flush FIFO Rst Value
(W)
xxxxxxx0b
Flush Status _Read
(R)
Value 00h
Bit 7
Bit 6
Expansion Mode
0 = 100% ≤ X < 200%
1 = 200% ≤ X < 300%
2 = 300% ≤ X < 400%
Bit 5
Bit 4
ORing Threshold Setting
0= no threshold
1-7= threshold value 1-7
Bit 3
Bit 2
Bit 1
Data Source New line
Selection _{Write 1 and}
0=T4/T6 then, 0 "
1=Ext. Mem. ^{convert a}
new line
Bit 0
Default:
Enable Or of Rst Value
orig. line _00h
buffer with
current scan
line
Read
Value 00h
Bit 8
Bit 7-6
Bit 5-3
Bit 2
Data Source selection
Bit 1
Bit 0
Convert a new line
For write, 1 " flush FIFO. For read, 1 " flush needed.
These two bits sets the resolution conversion hardware’s expansion
range. If the value of these two bits is ‘n’ and the expected expansion
ratio is X, the ratio ‘X-(n* 100%)’ needs to be set into the
BiResConRatio register.
n = the threshold value for the ORing function, n = 0-7. It means that
Oring is done to (n+1) contiguous 1’s only when bit 0 is set to 1.
When this bit is set to 0, data is serially from the T4/T6 decompressor.
When this bit is set to 1, data is from the external memory through the
DMA operation (DMA channel 9).
Resolution Conversion Logic is reset. Firmware needs to write a 1 and
then, immediately write a 0 to tell hardware to convert a new line.
Enable OR of orig. line buffer with current scan line (ScanOrEnb) (This
bit is only used when the external scan device is selected as the data
source of the resolution conversion). 1 = enable Bi-level Vertical
OR'ing of the scanner line buffer data. This bit can be used to
accomplish normal mode OR'ing and vertical reduction.
Note: If you don’t want to do image expansion or image reduction, the resolution conversion
ratio is 100%. You need to program bits[7:6] of the BiResConCtrl register to ‘00b’ and program
the BiResConRatio register to ‘0000h’.
100723A
Conexant
9-11