MFC2000 datasheet(224/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

9-12

Conexant

100723A

Shingling Mask Register:

Address:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

Shingling Mask

(ShinglingMask)

$01FF808D

(Not Used)

Mask

bit 11

Mask

bit 10

Mask

bit 9

Mask

bit 8

Rst Value

xxxx1111h

Read Value

0Fh

Address:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

Shingling Mask

(ShinglingMask)

$01FF808C

Mask

bit 7

Mask

bit 6

Mask

bit 5

Mask

bit 4

Mask

bit 3

Mask

bit 2

Mask

bit 1

Mask

bit 0

Rst Value

FFh

Read Value

FFh

This is a loadable circular right-shift register which firmware can load a mask. A 1 in a mask bit means to let that

pixel pass through and A 0 in a mask bit means to block that pixel and output 0 for that pixel. The output of this

shift register (LSB) gates with the serial data from the resolution convertor on each bi-level resolution conversion

clock. The shift register is clocked in sync with the serial to parallel converter so that the mask rotates in sync with

the serial data. This 12-bit shingling mask register supports 50, 33, and 25 percent shingling. For example, for the

33 percent shingling, firmware should load 001001001001, 010010010010, or 100100100100, depending on the

scanline and pass in question.

The number of zeros inserted in a line for the Horizontal Shifter:

Address:

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default:

The Number of

Zeros in a line

(HSZeroNo)

$01FF808F

(Not Used)

data

bit 2

data

bit 1

data

bit 0

Rst Value

xxxxx000b

Read Value

00h

Address:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default:

The Number of

Zeros in a line

(HSZeroNo)

$01FF808E

(Not Used)

data

bit 5

data

bit 4

data

bit 3

data

bit 2

data

bit 1

data

bit 0

Rst Value

xx000000b

Read Value

00h

Bit 10-8

The total number of zeros (halfwords) in a line

0 = nothing is added

1 = 1 halfword (16 zeros)

2 = 2 halfwords (32 zeros)

3 = 3 halfwords (48 zeros)

4 = 4 halfwords (64 zeros)

5-7 = not used

Bit 5-0

The number of zeros (pixels) in the beginning of a line, from 0 to 63

zeros

Note: If value 5, 6, or 7 is put into this register, 4 halfword (64 zeros) will be used.

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