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MTV312M64 Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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MTV312M64 Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
11 / 26 page MYSON TECHNOLOGY MTV312M64 (Rev 0.95) Revision 0.95 - 11 - 2001/07/03 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. 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 the 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 250Hz. The HBLANK/VBLANK shares the output pin with P4.1/ P4.0. 6.6 Self Test Pattern Generator For testing purposes, this generator can generate 4 display patterns, which are positive cross-hatch, negative cross-hatch, full white, and full black (shown as figures below). 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 output STOUT of the generator shares the output pin with P4.2. |
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