MTV112E View Datasheet(PDF) - Myson Century Inc

Part Name

Description

Manufacturer

MTV112E

8051 embedded CRT monitor controller OTP version

Myson Century Inc 

MYSON

TECHNOLOGY

MTV112E

(Rev 1.8)

VCNTL (r) : V-Freq counter's low bits.

PCTR0 (w) : SYNC processor control register 0.

C1, C0 = 1,1 → Selects CVSYNC as the polarity, Freq and VBLANK source.

= 1,0 → Selects VSYNC as the polarity, Freq and VBLANK source.

= 0,0 → Disables composite function (MTV012 compatible mode).

= 0,1 → H/W auto switches to CVSYNC when CVpre=1 and VSpre=0.

HVsel = 1 → Pin #16 is P4.1, pin #17 is P4.0.

= 0 → Pin #16 is HBLANK, pin #17 is VBLANK.

STOsel = 1 → Pin #29 is P4.2.

= 0 → Pin #29 is STOUT.

PREFS = 0 → Selects 8MHz OSC as H/V presence check and self-test pattern time base.

= 1 → Selects 12MHz OSC as H/V presence check and self-test pattern time base.

HALFV = 1 → VBLANK is half frequency output of VSYNC.

HBpl = 1 → Negative polarity HBLANK output.

= 0 → Positive polarity HBLANK output.

VBpl = 1 → Negative polarity VBLANK output.

= 0 → Positive polarity VBLANK output.

PCTR2 (w) : Self-test pattern generator control.

Selft = 1 → Enables generator.

= 0 → Disables generator.

STbsh = 1 → 63.5KHz (horizontal) output selected.

= 0 → 31.75KHz (horizontal) output selected.

Rt1, Rt0= 0,0 → Positive cross-hatch pattern output.

= 0,1 → Negative cross-hatch pattern output.

= 1,0 → Full white pattern output.

= 1,1 → Full black pattern output.

STF = 1 → Enables STOUT output.

= 0 → Disables STOUT output.

P4OUT (w) : Port 4 data output value.

INTFLG (w) : Interrupt flag. An interrupt event will set its individual flag, and, if the corresponding interrupt

enabler bit is set, the 8051 core's INT1 source will be driven by a zero level. Software MUST

clear this register while serving the interrupt routine.

HPRchg= 1 → No action.

= 0 → Clears HSYNC presence change flag.

VPRchg= 1 → No action.

= 0 → Clears VSYNC presence change flag.

HPLchg= 1 → No action.

= 0 → Clears HSYNC polarity change flag.

VPLchg = 1 → No action.

= 0 → Clears VSYNC polarity change flag.

HFchg = 1 → No action.

= 0 → Clears HSYNC frequency change flag.

VFchg = 1 → No action.

= 0 → Clears VSYNC frequency change flag.

VSYNCi= 1 → No action.

= 0 → Clears VSYNC interrupt flag.

INTFLG (r) : Interrupt flag.

HPRchg= 1 → Indicates an HSYNC presence change.

11/19

MTV112E Revision 1.8 05/18/2001

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