AD9380SLASHPCB datasheet(48/60 Pages) AD

48 / 60 page

AD9380

Rev. 0 | Page 48 of 60

0x81—Bits[6:5] Y [1:0]

This register indicates whether data is RGB, 4:4:4, or 4:2:2.

Table 28.

Video Data

RGB

YCbCr 4:2:2

YCbCr 4:4:4

0x81—Bits[4] Active Format Information Present

0 = no data. 1 = active format information valid.

0x81—Bits[3:2] Bar Information

Table 29.

Bar Type

No bar information

Horizontal bar information valid

Vertical bar information valid

Horizontal and vertical bar information valid

0x81—Bits[1:0] Scan Information

Table 30.

S [1:0]

Scan Type

No information

Overscanned (television)

Underscanned (computer)

0x82—Bits[7:6] Colorimetry

Table 31.

C [1:0]

Colorimetry

No data

SMPTE 170M, ITU601

ITU 709

0x82—Bits[5:4] Picture Aspect Ratio

Table 32.

M[1:0]

Aspect Ratio

No data

4:3

16:9

0x82—Bits[3:0] Active Format Aspect Ratio

Table 33.

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—Bits[1:0] Nonuniform Picture Scaling

Table 34.

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—Bits[6:0] Video ID Code

See CEA EDID short video descriptors.

0x85—Bits[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—Bits[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—Bits[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 35.

NDF Bit Number

Changes Occurred

AVI infoframe

Audio infoframe

SPD infoframe

MPEG source infoframe

ACP packets

ISRC1 packets

ISRC2 packets

0x88—Bits[7:0] Active Line Start MSB

See Register 0x86.

0x89—Bits[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—Bits[7:0] Active Line End MSB

See Register 0x89.

0x8B—Bits[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—Bits[7:0] Active Pixel Start MSB

See Register 0x8B.

0x8D—Bits[7:0] Active Pixel End LSB

Combined with the MSB in Register 0x8E, these bits indicate

the last active video pixel in the display. All pixels past this

comprise a right vertical bar. If the 2-byte value is greater than

the number of pixels in the display, there is no vertical bar.

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