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Chapter 12 PRECAUTIONARY ITEMS
545
12.2.7 DisplayPort unit (VM-1820, 1820A)
The dot clock frequency is restricted by the pattern drawing bit length (Color Depth) shown in the figure
below. Data skipping occurs when the output video bit length (Video Width) at this time is less than the
pattern drawing bit length (Color Depth).
340MHz
300MHz
250MHz
200MHz
100MHz
0.1MHz
8Bit
9、10Bit
11、12Bit
13、14Bit
15、16Bit
16M
16M
16M
16M
16M
Co
lo
r
D
e
p
th
:
Video Depth:
8、10、12Bit
Color Depth > Video Widthの場合、データが切り捨てられています。
Color Depth < Video Widthの場合、データ"0"が付加されていま す。
データが切り捨てられていま す
270M
270M
270M
270M
240M
Restrictions on dot clock frequency for DP1, DP2 (Single mode)
340MHz
300MHz
250MHz
200MHz
100MHz
0.1MHz
8Bit
9、10Bit
11、12Bit
13、14Bit
15、16Bit
32M
32M
32M
32M
32M
Co
lo
r
D
e
p
th
:
Video Depth:
8、10、12Bit
Color Depth > Video Widthの場合、データが切り捨てられています。
Color Depth < Video Widthの場合、データ"0"が付加されていま す。
データが切り捨てられていま す
280M
240M
330M
340M
340M
Restrictions on dot clock frequency for DP1, DP2 (Dual/Split mode)
The maximum dot clock also depends on the DisplayPort Link Rate and other settings. For details, refer
to “11.1.8 DP unit”.
For details on the pattern drawing bit length (Color Depth), refer to “4.1.5 Setting the bit length (gray
scale) for pattern drawing”.
For details on the output video bit length (Video Width), refer to “4.12.2 DisplayPort setting procedure”.
Setting unit of horizontal timing
In Single Mode, H-timing should be set by 2-dot. In Dual/Split Mode, H-timing should be set by 4-dot.
Front porch setting value in interlace timings
Due to the restriction of the DisplayPort Transmitter, Horizontal front porch should be set by 32-dot or
higher, or vertical front porch should be set by 1H or higher.
Maximum vertical scanning lines
Due to the restriction of the DisplayPort Transmitter, 2046 is the maximum. (VM-1820 only)
When Color Depth > Video Width, the data is rounded off.
When Color Depth < Video Width, data “0” is added.
The data is rounded off.
When Color Depth > Video Width, the data is rounded off.
When Color Depth < Video Width, data “0” is added.
The data is rounded off.
Summary of Contents for VG-870B
Page 1: ...Programmable Video Signal Generator VG 870B 871B 873 874 Instruction Manual Ver 3 80 ...
Page 2: ......
Page 4: ......
Page 14: ...x ...
Page 58: ...40 ...
Page 220: ...202 4 12 8 DDC CI For further details on the setting procedure refer to 6 13 4 DDC CI ...
Page 286: ...268 ...
Page 362: ...344 0 1 2 3 4 5 6 ...
Page 394: ...376 ...
Page 426: ...408 ...
Page 450: ...432 ...
Page 537: ...Chapter 11 SPECIFICATIONS 519 F0H letters me 1 F1H letters me 2 VESA specifications ...
Page 538: ...520 F2H Chinese character AI F3H Chinese character BI ...
Page 539: ...Chapter 11 SPECIFICATIONS 521 F4H Chinese character TAKA F5H Chinese character KIRI ...
Page 540: ...522 F6H Chinese character KEN F7H Burst ...
Page 542: ...524 5 7 character pattern table 2 of 2 ...
Page 543: ...Chapter 11 SPECIFICATIONS 525 7 9 character pattern table 1 of 2 ...
Page 544: ...526 7 9 character pattern table 2 of 2 8 9 dots are used for 80H to 8FH ...
Page 545: ...Chapter 11 SPECIFICATIONS 527 16 16 character pattern table 1 of 4 ...
Page 546: ...528 16 16 character pattern table 2 of 4 ...
Page 547: ...Chapter 11 SPECIFICATIONS 529 16 16 character pattern table 3 of 4 ...
Page 548: ...530 16 16 character pattern table 4 of 4 ...
Page 554: ...536 ...