MFC2000 datasheet(159/426 Pages) ETC

159 / 426 page

Hardware Description

MFC 2000 Multifunctional Peripheral Controller 2000

100723A

Conexant

7-11

Bit 15

Clamp Position (only valid for line–based clamping)

Setting the ClampPosition bit causes the ClampDelay value to be

applied from the start of the scanline (i.e., during the ScanStartDelay

time). Clearing this bit causes the ClampDelay value to be applied

from the first valid pixel of the scanline (i.e., after the ScanStartDelay

has been accounted for).

Bits 13-0 Clamp Delay[13:0] (only valid for line–based clamping)

The ClampDelay register control the number of scan dots (pixels) that

are to be skipped before enabling the clamp signal for the number of

pixels specified in ClampLength register.

Note: If ClampPosition bit = 0 and a new scanline is started before the ClampDelay value has

been satisfied, the clamp signal will not activate. The same is true if ClampPosition bit = 1 and

the ScanStartDelay value is less than the ClampDelay value.

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Clamp Edges

(ClampEdges)

$01FF88AB

(Not Used)

(Not Used) Rst Value

xxh

Read Value

00h

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Clamp Edges

(ClampEdges)

$01FF88AA

ClampNeg Value (0-15)

ClampPos Value (0-15)

Rst Value

00h

Read Value

00h

Bits 7-4

ClampNeg

ClampNeg establishes the trailing edge of the Clamp signal relative to

the start of each dot period, and is specified in ScanDotScaler clock

periods.

Bits 3-0

ClampPos

ClampPos establishes the leading edge of the Clamp signal relative to

the start of each dot period, and is specified in ScanDotScaler clock

periods.

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