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AD9381 Datasheet

  • AD9381

  • HDMI? Display Interface

  • 45頁

  • AD

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AD9381
Hex
Address
Read/Write
or Read Only
Bits
[3:0]
Default Value
Register Name
Active Format Aspect
Ratio
Description
R [3:0].
1000 = same as picture aspect ratio.
1001 = 4:3 (center).
1010 = 16:9 (center).
1011 = 14:9 (center).
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.
VIC [6:0] video identification code鈥攔efer to CEA
EDID short video descriptors.
PR [3:0]鈥擳his 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鈥?xF reserved.
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.
New data flags. These 8 bits are updated if any
specific data changes. Normal (no NDFs) is 0x00.
When any NDF register is read, all bits reset to 0x00.
All NDF registers contain the same data.
Bit Data Packet Changed
0
AVI infoframe.
1
Audio infoframe.
2
SPD infoframe.
3
MPEG source infoframe.
4
ACP packets.
5
ISRC1 packets.
6
ISRC2 packets.
Active line start MSB (see Register 0x86).
This represents the line number of the beginning of
a lower horizontal bar. If greater than the number
of active video lines, there is no lower horizontal
bar. Combines with Register 0x8A for a 16-bit value.
Active line end MSB. See Register 0x89.
This represents the last pixel in a vertical pillar bar
at the left side of the picture. If 0, there is no left
bar. Combines with Register 0x8C for a 16-bit value.
Active pixel start MSB. See Register 0x8B.
This represents the first horizontal pixel in a vertical
pillar-bar at the right side of the picture. If greater
than the maximum number of horizontal pixels,
there is no vertical bar. Combines with Register
0x8E for a16-bit value.
Active pixel end MSB. See Register 0x8D.
New data flags (see 0x87).
0x83
Read
[1:0]
Nonuniform Picture
Scaling
0x84
0x85
Read
Read
[6:0]
[3:0]
Video Identification Code
Pixel Repeat
0x86
Read
[7:0]
Active Line Start LSB
0x87
Read
[6:0]
New Data Flags
0x88
0x89
Read
Read
[7:0]
[7:0]
Active Line Start MSB
Active Line End LSB
0x8A
0x8B
Read
Read
[7:0]
[7:0]
Active Line End MSB
Active Pixel Start LSB
0x8C
0x8D
Read
Read
[7:0]
[7:0]
Active Pixel Start MSB
Active Pixel End LSB
0x8E
0x8F
Read
Read
[7:0]
[6:0]
Active Pixel End MSB
New Data Flags
Rev. 0 | Page 21 of 44

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