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WT6016

Digital Monitor Controller

Unspecified 

Half Frequency

WT6016

Digital Monitor Controller

Ver. 1.51 Jul-31-1998

HLFO pin outputs same or half frequency from HLFI pin. The divide-by-2 operation is done on the

falling edge of HLFI pin when HALF bit is set. Polarity of HLFO is specified by HLFPO bit.

HLFI

HLFO

(HALF=0)

(HLFPO=0)

HLFO

(HALF=0)

(HLFPO=1)

HLFO

(HALF=1)

R/W Initial Bit7

0016H W

--

0

0016H R

--

F9

0017H W

--

--

0017H R

00H H/V

Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0

0 ENPAT PAT1 PAT0 SELF H64K H48K

F8

F7

F6

F5

F4

F3

F2

-- ENHLF HALF HLFPO H+V HOP VOP

-- H_POL V_POL OVF2 OVF1 F1

F0

Bit Name

ENPAT

PAT1,PAT0

SELF

H64K, H48K

ENHLF

HALF

HLFPO

H+V

HOP

VOP

H/V

H_POL

V_POL

OVF2, OVF1

F9-F0

Bit value = “1”

Bit value = “0”

Pin PB3/PAT outputs test pattern. Pin PB3/PAT is I/O port.

If PAT1=0, PAT0=0, cross hatch picture.

If PAT1=0, PAT0=1, white picture.

If PAT1=1, PAT0=0, inverted cross hatch picture.

If PAT1=1, PAT0=1, black picture.

HSO and VSO output free-running HSO and VSO output sync signals.

frequency.

H64K=“1”,H48K=“1” : Burn-in frequency=47.9kHz/74.9Hz

H64K=“0”,H48K=“1” : Burn-in frequency=47.9kHz/74.9Hz

H64K=“1”,H48K=“0” : Burn-in frequency=64kHz/62.5Hz

H64K=“0”,H48K=“0” : Burn-in frequency=31.1kHz/60.8Hz

Pin PB1/HLFI is frequency input.

Pin PB0/HLFO is half frequency

output.

Pin PB1/HLFI and PB0/HLFO is I/O

port.

HLFO outputs half frequency of HLFI. HLFO outputs same frequency of HLFI

HLFO is positive polarity.

HLFO is negative polarity.

Enable H+V separation function.

Disable H+V separation.

This will select the sync signals come

from the sync separator.

HSO pin is always positive polarity. HSO pin is always negative polarity.

VSO pin is always positive polarity. VSO pin is always negative polarity.

Counter stores horizontal frequency. Counter stores vertical frequency.

HSYNC input is positive polarity. HSYNC input is negative polarity.

VSYNC input is positive polarity. VSYNC input is negative polarity.

OVF2=“1”,OVF1=“0” : Counter overflowed twice.

OVF2=“0”,OVF1=“1” : Counter overflowed once.

OVF2=“0”,OVF1=“0” : No overflow.

OVF2=“1”,OVF1=“1” : No such condition.

Frequency counter value. (F9 is MSB)

Weltrend Semiconductor, Inc.

11

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