MFC2000 datasheet(223/426 Pages) ETC

223 / 426 page

Hardware Description

MFC 2000 Multifunctional Peripheral Controller 2000

100723A

Conexant

9-11

Bi-level Resolution Conversion Control Register:

Address:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

Bi-level Res.

Conversion

Control

(BiResConCtrl)

01FF807F

(Not Used)

Flush FIFO

(W)

Flush Status

(R)

Rst Value

xxxxxxx0b

Read

Value 00h

Address:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

Bi-level Res.

Conversion

Control

(BiResConCtrl)

01FF807E

Expansion Mode

0 = 100%

≤ X < 200%

1 = 200%

≤ X < 300%

2 = 300%

≤ X < 400%

ORing Threshold Setting

0= no threshold

1-7= threshold value 1-7

Data Source

Selection

0=T4/T6

1=Ext. Mem.

New line

Write 1 and

then, 0

convert a

new line

Enable Or of

orig. line

buffer with

current scan

line

Rst Value

00h

Read

Value 00h

Bit 8

For write, 1 " flush FIFO. For read, 1 " flush needed.

Bit 7-6

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.

Bit 5-3

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.

Bit 2

Data Source selection

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).

Bit 1

Convert a new line

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.

Bit 0

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’.

MFC2000 датащи(PDF) 223 Page - List of Unclassifed Manufacturers

MFC2000 датащи(HTML) 223 Page - List of Unclassifed Manufacturers

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL