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MTV012E Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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MTV012E Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
6 / 14 page MYSON TECHNOLOGY MTV012E MTV012E Revision 1.2 12/23/1998 6/14 5 60.53 102h / 258 183h / 387 6 66.67 0EAh / 234 15Fh / 351 7 70.069 0DEh / 222 14Eh / 334 8 70.08 0DEh / 222 14Eh / 334 9 72 0D9h /217 145h / 325 10 72.378 0D7h / 215 143h / 323 11 72.7 0D6h / 214 142h / 322 12 87 0B3h / 179 10Dh / 269 *1. The V-Freq output (VF8 - VF0) is valid. *2. The tolerance deviation is + 1 LSB. 4.3 H/V Present Check The H present function checks the input HSYNC pulse; the Hpre flag is set when HSYNC is over 10KHz or cleared when HSYNC is under 10Hz. The V present function checks the input VSYNC pulse; the Vpre flag is set when VSYNC is over 40Hz or cleared when VSYNC is under 10Hz. The control bit "PREFS" selects the time base for these functions. The HPRchg interrupt is set when the Hpre value changes. The VPRchg interrupt is set when the Vpre/CVpre values change. However, the CVpre flag interrupt may be disabled when S/W disables the composite function. 4.4 H/V Polarity Detection 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. 4.5 Output HBLANK/VBLANK Control and Polarity Adjustment HBLANK is the MUX output of HSYNC and the self-test horizontal pattern. The VBLANK is the MUX output of VSYNC, CVSYNC and the 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 or 133Hz depends on 8MHz/12MHz OSC selection. HBLANK/VBLANK shares the output pin with P4.1/ P4.0. 4.6 Self-Test Pattern Generator This generator can generate 4 display patterns for testing purposes: positive cross-hatch, negative cross-hatch, full white and full black (shown in the following figure). It was originally designed to support monitor manufacturers to do a burn-in test, or offer the end-user a reference to check the monitor. The generator's output STOUT shares the output pin with P4.2. Display Region Self-Test Patterns (1) |
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