MFC2000 datasheet(158/426 Pages) ETC

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MFC2000 Multifunctional Peripheral Controller 2000

Hardware Description

7-10

Conexant

100723A

Bits 15

Mode

This mode will only affect the number of sample pulses and not the

number of sampled data to be stored into memory.

0 = sampling continuously as long as ScanEnable = 1

1 = sampling valid pixels only

Bits 7-4

SampleNeg

SampleNeg establishes the trailing edge of the Sample signal relative

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

periods.

Bits 3-0

SamplePos

SamplePos establishes the leading edge of the Sample signal relative

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

periods.

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Clamp Control

(ClampCtrl)

$01FF88A7

Clamp

Mode

Internal

Clamp

Enable

External

Clamp

Enable

External

Clamp

Guardband

Enable

External

Clamp

Invert

(Not Used)

Rst Value

0xxxxxxxb

Read Value

00h

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Clamp Control

(ClampCtrl)

$01FF88A6

(Not Used)

ClampLengh[6:0]

Rst Value

x0000000b

Read

Value 00h

Bit 15

ClampMode (1 = line–based, 0 = pixel–based)

Setting the ClampMode bit causes line-based clamping to be used.

Clearing this bit causes pixel-based clamping to be used.

For line–based clamping, the clamp signal is enabled for the number

of dots specified in ClampLength register, and can occur either before

or after the valid pixel data, as selected by the ClampDelay register.

For pixel–based clamping, the clamp signal runs continuously

throughout the entire scanline.

Bits 6-0

ClampLength[6:0]

This value specifies the number of pixels to be used for line–based

clamping.

Note: Both internal and external clamp share the same control signals for ‘shift’ and ‘delay’.

Name/Address

Bit 15

Bit 14

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

Default

Clamp Delay

(ClampDelay)

$01FF88A9

Clamp

Position

(Not Used)

Clamp Delay[13:8]

Rst Value

0x000000b

Read Value

00h

Name/Address

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Default

Clamp Delay

(ClampDelay)

$01FF88A8

Clamp Delay [7:0]

Rst Value

00h

Read Value

00h

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