MTV212MN64I View Datasheet(PDF) - Myson Century Inc

Part Name

Description

Manufacturer

MTV212MN64I

8051 Embedded Monitor Controller Flash Type with ISP

Myson Century Inc 

MYSON

TECHNOLOGY

MTV212M64i

(Rev 0.9)

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 200Hz. 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 (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 manufacturers to do burn-in test, or

offer end-users a reference to check the monitor. The output STOUT of the generator shares the output pin

with P4.2.

Display Region

Positive cross-hatch

Negative cross-hatch

Full white

Revision 0.9

Full black

- 11 -

2000/11/17

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