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MTV212AS32 Datenblatt(PDF) 10 Page - List of Unclassifed Manufacturers

Teilenummer MTV212AS32
Bauteilbeschribung  8051 Embedded Monitor Controller Mask ROM Type
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MYSON
TECHNOLOGY
MTV212A32
(Rev. 1.2)
Revision 1.2
- 10 -
2000/07/04
6.2.1 H-Freq Table
Output Value (14 bits)
H-Freq(KHZ)
12MHz OSC (hex / dec)
1
31.5
0FDEh / 4062
2
37.5
0D54h / 3412
3
43.3
0B8Bh / 2955
4
46.9
0AA8h / 2728
5
53.7
094Fh / 2383
6
60.0
0854h / 2132
7
68.7
0746h / 1862
8
75.0
06AAh / 1706
9
80.0
063Fh / 1599
10
85.9
05D1h / 1489
11
93.8
0554h / 1364
12
106.3
04B3h / 1203
6.2.2 V-Freq Table
Output value (12bits)
V-Freq(Hz)
12MHz OSC (hex / dec)
1
56
45Ch / 1116
2
60
411h / 1041
3
70
37Ch /
892
4
72
364h /
868
5
75
341h /
833
6
85
2DFh /
735
6.3 H/V Present Check
The Hpresent function checks the input HSYNC pulse, Hpre flag is set when HSYNC is over 10KHz or
cleared when HSYNC is under 10Hz. The Vpresent function checks the input VSYNC pulse, the Vpre flag is
set when VSYNC is over 40Hz or cleared when VSYNC is under 10Hz. The HPRchg interrupt is set when
the Hpre value changes. The VPRchg interrupt is set when the Vpre/CVpre value change. However, the
CVpre flag interrupt may be disabled when S/W disable the composite function.
6.4 H/V Polarity Detect
The polarity functions detect the input HSYNC/VSYNC high and low pulse duty cycle. If the high pulse
duration is longer than that of low pulse, the negative polarity is asserted; otherwise, positive polarity is
asserted. The HPLchg interrupt is set when the Hpol value changes. The VPLchg interrupt is set when the
Vpol value changes.
6.5 Output HBLANK/VBLANK Control and Polarity Adjust
The HBLANK is the mux output of HSYNC, composite Hpulse and self-test horizontal pattern. The VBLANK
is the mux output of VSYNC, CVSYNC and self-test vertical pattern. The mux selection and output polarity
are S/W controllable. The VBLANK output is cut off when VSYNC frequency is over 200Hz. The
HBLANK/VBLANK shares the output pin with P4.1/ P4.0.
6.6 Self Test Pattern Generator
This generator can generate 4 display patterns for testing purpose, which are positive cross-hatch, negative
cross-hatch, full white, and full black (showed as following figure). The HBLANK output frequency of the
pattern can be chosen to 95.2KHz, 63.5KHz, 47.6KHz and 31.75KHz. The VBLANK output frequency of the
pattern is 72Hz or 60Hz. It is originally designed to support monitor manufacturer to do burn-in test, or offer
end-user a reference to check the monitor. The generator's output STOUT shares the output pin with P4.2.


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