Datasheet

AD9398
Rev. 0 | Page 20 of 44
Hex Address
Read/Write
or Read
Only
Bits
Default
Value
Register Name Description
0x7F Read [7:0] N [7:0]
AVI Infoframe
0x80 Read [7:0] AVI Infoframe Version
0x81 Read [6:5] Y [1:0] Indicates RGB, 4:2:2, or 4:4:4.
00 = RGB.
01 = YCbCr 4:2:2.
10 = YCbCr 4:4:4.
4 Active Format Active format information present.
Information Status 0 = no data.
1 = active format information valid.
[3:2] Bar Information B [1:0].
00 = no bar information.
01 = horizontal bar information valid.
10 = vertical bar information valid.
11 = horizontal and vertical bar information valid.
[1:0] Scan Information S [1:0].
00 = no information.
01 = overscanned (television).
10 = underscanned (computer).
0x82 Read [7:6] Colorimetry C [1:0].
00 = no data.
01 = SMPTE 170M, ITU601.
10 = ITU709.
[5:4] Picture Aspect Ratio M [1:0].
00 = no data.
01 = 4:3.
10 = 16:9.
[3:0]
Active Format Aspect
Ratio
R [3:0].
1000 = same as picture aspect ratio.
1001 = 4:3 (center).
1010 = 16:9 (center).
1011 = 14:9 (center).
0x83 Read [1:0]
Nonuniform Picture
Scaling
SC[1:0].
00 = no known nonuniform scaling.
01 = picture has been scaled horizontally.
10 = picture has been scaled vertically.
11 = picture has been scaled horizontally and vertically.
0x84 Read [6:0]
Video Identification
Code
VIC [6:0] video identification code—refer to CEA EDID
short video descriptors.
0x85 Read [3:0] Pixel Repeat
PR [3:0]—This specifies how many times a pixel has been
repeated.
0000 = no repetition (pixel sent once).
0001 = pixel sent twice (repeated once).
0010 = pixel sent 3 times.
1001 = pixel sent 10 times.
0xA—0xF reserved.
0x86 Read [7:0] Active Line Start LSB
This represents the line number of the end of the top
horizontal bar. If 0, there is no horizontal bar. Combines
with Register 0x88 for a 16-bit value.