AD9880SLASHPCB datasheet(51/64 Pages) AD

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AD9880

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Table 80.

Video Data

RGB

YCbCr 4:2:2

YCbCr 4:4:4

0x81

Active Format Information Present

0 = no data

1 = active format information valid

0x81

3-2

Bar Information

Table 81.

Bar Type

No bar information

Horizontal bar information valid

Vertical bar information valid

Horizontal and vertical bar information valid

0x81

1-0

Scan Information

Table 82.

S [1:0]

Scan Type

No information

Overscanned (television)

Underscanned (computer)

0x82

7-6

Colorimetry

Table 83.

C [1:0]

Colorimetry

No data

SMPTE 170M, ITU601

ITU 709

0x82

5-4

Picture Aspect Ratio

Table 84.

M[1:0]

Aspect Ratio

No data

4:3

16:9

0x82

3-0

Active Format Aspect Ratio

Table 85.

R [3:0]

Active Format A/R

0x8

Same as picture aspect ratio (M [1:0])

0x9

4:3 (center)

0xA

16:9 (center)

0xB

14:9 (center)

0x83

1-0

Nonuniform Picture Scaling

Table 86.

SC [1:0]

Picture Scaling

No known nonuniform scaling

Has been scaled horizontally

Has been scaled vertically

Has been scaled both horizontally and vertically

0x84

6-0

Video ID Code

See CEA EDID short video descriptors.

0x85

3-0

Pixel Repeat

This value indicates how many times the pixel was

repeated. 0x0 = no repeats, sent once, 0x8 = 8 repeats,

sent 9 times, and so on.

0x86

7-0

Active Line Start LSB

Combined with the MSB in Register 0x88, these bits

indicate the beginning line of active video. All lines

before this comprise a top horizontal bar. This is used

in letter box modes. If the 2-byte value is 0x00, there is

no horizontal bar.

0x87

6-0

New Data Flags (NDF)

This register indicates whether data in specific

sections has changed. In the address space from 0x80

to 0xFF, each register address ending in 0b111 (for

example, 0x87, 0x8F, 0x97, 0xAF) is an NDF register.

They all have the same data and all are reset upon

reading any one of them.

Table 87.

NDF Bit number

Changes Occurred

AVI infoframe

Audio infoframe

SPD infoframe

MPEG Source infoframe

ACP packets

ISRC1 packets

ISRC2 packets

0x88

7-0

Active Line Start MSB

See Register 0x86.

0x89

7-0

Active Line End LSB

Combined with the MSB in Register 0x8A these bits

indicate the last line of active video. All lines past this

comprise a lower horizontal bar. This is used in letter-

box modes. If the 2-byte value is greater than the

number of lines in the display, there is no lower

horizontal bar.

0x8A

7-0

Active Line End MSB

See Register 0x89.

0x8B

7-0

Active Pixel Start LSB

Combined with the MSB in Register 0x8C, these bits

indicate the first pixel in the display which is active

video. All pixels before this comprise a left vertical bar.

If the 2-byte value is 0x00, there is no left bar.

0x8C

7-0

Active Pixel Start MSB

See Register 0x8B.

AD9880/PCB Datasheet(PDF) 51 Page - Analog Devices

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