ADV7183ABST datasheet(25/104 Pages) AD

25 / 104 page

ADV7183A

Rev. A | Page 25 of 104

SDP COLOR CONTROLS

The following registers provide user control over the picture

appearance, including control of the active data in the event of

video being lost. They are independent of any other controls.

For instance, brightness control is independent from picture

clamping, although both controls affect the signal’s dc level.

CON[7:0] Contrast Adjust (SDP), Address 0x08, [7:0]

This is the user control for contrast adjustment for the SDP

block only.

Table 44. CON Function

CON[7:0]

Description (Adjust Contrast of the Picture)

0x80*

Gain on luma channel = 1.

0x00

Gain on luma channel = 0.

0xFF

Gain on luma channel = 2.

*Default value.

SAT[7:0] Saturation Adjust (SDP), Address 0x09, [7:0]

The user can adjust the saturation of the color output using this

ADI encourages users not to use the SAT[7:0] register, which

may be removed in future revisions of the ADV7183A. Instead,

the SD_SAT_Cb and SD_SAT_Cr registers should be used.

Table 45. SAT Function

SAT[7:0]

Description (Adjust Saturation of the Picture)

0x80*

Chroma gain = 0 dB.

0x00

Chroma gain = –42 dB.

0xFF

Chroma gain = 6 dB.

*Default value.

SD_SAT_Cb[7:0] SD Saturation Cb Channel (SDP),

Address 0xE3, [7:0]

This register allows the user to control the gain of the Cb

channel only.

For this register to be active , SAT[7:0] must be programmed

with its default value of 0x80. If SAT[7:0] is programmed with a

different value, SD_SAT_Cb[7:0] and SD_SAT_Cr[7:0] are

inactive.

Table 46. SD_SAT_Cb Function

SD_SAT_Cb[7:0]

Description

(Adjust Saturation of the Picture)

0x80*

Chroma gain = 0 dB.

0x00

0xFF

*Default value.

SD_SAT_Cr[7:0] SD Saturation Cr Channel (SDP),

Address 0xE4, [7:0]

This register allows the user to control the gain of the Cr

channel only. This register affects the SDP core only.

For this register to be active, SAT[7:0] must be programmed

with its default value of 0x80. If SAT[7:0] is programmed with a

different value, SD_SAT_Cb[7:0] and SD_SAT_Cr[7:0] are

inactive.

Table 47. SD_SAT_Cr Function

SD_SAT_Cr[7:0]

Description

(Adjust Saturation of the Picture)

0x80*

Chroma gain = 0 dB

0x00

0xFF

*Default value.

SD_OFF_Cb[7:0] SD Offset Cb Channel (SDP),

Address 0xE1, [7:0]

This register allows the user to select an offset for the Cb

channel only. This register affects the SDP core only. There is a

functional overlap with the Hue [7:0] register.

Table 48.SD_OFF_Cb Function

SD_OFF_Cb[7:0]

Description

(Adjust Hue of the Picture by Selecting an

Offset for Data on the Cb Channel)

0x80*

0x7F

0xFF

*Default value.

SD_OFF_Cr [7:0] SD Offset Cr Channel (SDP),

Address 0xE2, [7:0]

This register allows the user to select an offset for the Cr

channel only. This register affects the SDP core only. There is a

functional overlap with the Hue [7:0] register.

Table 49. SD_OFF_Cr Function

SD_OFF_Cr[7:0]

Description

(Adjust Hue of the Picture by Selecting an

Offset for Data on Cr Channel)

0x80*

0x7F

0xFF

*Default value.

ADV7183ABST Datasheet(PDF) 25 Page - Analog Devices

ADV7183ABST Datasheet(HTML) 25 Page - Analog Devices

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

Datasheet Download

Link URL