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.
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MTV112E Revision 1.8 05/18/2001