![](http://datasheet.mmic.net.cn/300000/SD1210_datasheet_16210132/SD1210_28.png)
SmartASI C, I nc.
SD1210
November, 1999
Revision B
SmartASIC Confidential
28
Reserve mode 3
Res threshold [7:0]
Enable SYNC
Check
8
21EH
Resolution threshold for reserve mode 3
14
21FH-220H Enable SYNC polarity check during input mode
detection.
1: enable SYNC polarity based mode detection
0: disable SYNC polarity based mode detection
bit 0: 640x350 bit 1: 640x400 bit 2: 720x400
bit 3: 640x480 bit 4: 800x600 bit 5: 832x624
bit 6: 1024x768 bit 7: 1152x864 bit 8: 1152x870
bit 9: 1280x960 bit 10: 1280x1024 bit 11: res mode1
bit 12: res mode2 bit 13: res mode3
221H
The maximum vertical back porch for input video
222H-223H Mode0 vertical size for digital input
224H-225H Mode1 vertical size for digital input
226H-227H Mode2 vertical size for digital input
228H-229H Mode3 vertical size for digital input
22AH-22BH Mode4 vertical size for digital input
22CH-22DH Mode5 vertical size for digital input
22EH-22FH Mode6 vertical size for digital input
230H-231H Mode7 vertical size for digital input
232H-233H Mode8 vertical size for digital input
234H-235H Mode9 vertical size for digital input
236H-237H Mode10 vertical size for digital input
238H-239H Mode11 vertical size for digital input
23AH-23BH Mode12 vertical size for digital input
23CH-23DH Mode0 horizontal size for digital input
23EH-23FH Mode1 horizontal size for digital input
240H-241H Mode2 horizontal size for digital input
242H-243H Mode3 horizontal size for digital input
244H-245H Mode4 horizontal size for digital input
246H-247H Mode5 horizontal size for digital input
248H-249H Mode6 horizontal size for digital input
24AH-24BH Mode7 horizontal size for digital input
24CH-24DH Mode8 horizontal size for digital input
24EH-24FH Mode9 horizontal size for digital input
250H-251H Mode10 horizontal size for digital input
252H-253H Mode11 horizontal size for digital input
254H-255H Mode12 horizontal size for digital input
256H
Low water mark for valid data.
If the data is smaller than this threshold, it is considered
LOW internally
257H
High water mark for valid data.
If the data is larger than this threshold, it is considered
HIGH internally
258H
Minimum difference between the data value of two
adjacent pixels to be considered as an edge
259H [1:0] Selects different operation modes of internal phase
calibration. The selection criterion is as follows:
0: when input video signal has large overshot,
it results in longest calibration time
1: when input video signal has median overshot,
it results in long calibration time
2: when input video signal has normal overshot,
Maximum VBP
Mode0 vertical size
Mode1 vertical size
Mode2 vertical size
Mode3 vertical size
Mode4 vertical size
Mode5 vertical size
Mode6 vertical size
Mode7 vertical size
Mode8 vertical size
Mode9 vertical size
Mode10 vertical size
Mode11 vertical size
Mode12 vertical size
Mode0 horizontal size
Mode1 horizontal size
Mode2 horizontal size
Mode3 horizontal size
Mode4 horizontal size
Mode5 horizontal size
Mode6 horizontal size
Mode7 horizontal size
Mode8 horizontal size
Mode9 horizontal size
Mode10 horizontal size
Mode11 horizontal size
Mode12 horizontal size
Data low threshold
8
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
8
Data high threshold
8
Edge threshold
8
Calibration mode
2