WM8170 datasheet(36/41 Pages) WOLFSON

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WM8170

Product Preview Rev 1.0

WOLFSON MICROELECTRONICS LTD

PP Rev 1.0 March 2000

CONTROL BITS

DESCRIPTION

ANALOGUE LOOP ENABLE DELAY (010001)

ANDEL[7:0]

Sets the delay in INTBLCENB pulses before the Steering circuit steers the INTBLCENB pulse to the

Analogue Loop Enable.

ANALOGUE LOOP ENABLE WIDTH (010010)

ANLINE[7:0]

Sets the number of INTBLCENB pulses to steer to the Analogue Loop Enable.

INTBLCENB PULSE GENERATOR DELAY (010011)

CLPDEL[7:0]

Sets the delay in pixels from the falling edge of BLCENB for the INTBLCENB pulse.

INTBLCENB PULSE GENERATOR WIDTH (010100)

CLPWID[7:0]

Sets the width of the INTBLCENB pulse.

AREA PULSE GENERATOR LINE DELAY LSB (010101)

LINDEL[7:0]

Sets the delay in HD pulses from the falling edge of VD for the vertical Area Pulse. Least significant 8 bits.

AREA PULSE GENERATOR LINE DELAY MSB (010110)

LINDEL[11:8]

Sets the delay in HD pulses from the falling edge of VD for the vertical Area Pulse. Most significant 4 bits.

REFERENCE SELECT (010111)

V375

Selects ADC reference voltage

V375

VRT-VRB

0.5V

0.75V

AREA PULSE GENERATOR LINE WIDTH LSB (011000)

LINWID[7:0]

Sets the width in HD pulses of the vertical Area Pulse. Least significant 8 bits.

AREA PULSE GENERATOR LINE WIDTH MSB (011001)

LINWID[11:8]

Sets the width in HD pulses of the vertical Area Pulse. Most significant 4 bits.

AREA PULSE GENERATOR HORIZONTAL PIXEL DELAY LSB (011010)

PIXDEL[7:0]

Sets the delay in pixels from the falling edge of HD for the horizontal Area Pulse. Least significant 8 bits.

AREA PULSE GENERATOR HORIZONTAL PIXEL DELAY MSB (011011)

PIXDEL[11:8]

Sets the delay in pixels from the falling edge of HD for the horizontal Area Pulse. Most significant 4 bits.

AREA PULSE GENERATOR HORIZONTAL WIDTH LSB (011100)

PIXWID[7:0]

Sets the width in pixels of the horizontal Area Pulse. Least significant 8 bits.

AREA PULSE GENERATOR LINE HORIZONTAL WIDTH MSB (011101)

PIXWID[11:8]

Sets the width in pixels of the horizontal Area Pulse. Most significant 4 bits.

IIR FILTER COEFFICIENT (011110)

COEFF[2:0]

Sets the IIR Filter Coefficient

COEFF2

COEFF1

COEFF0

Filter Coefficient

RMS Noise Attenuation 18.0dB

RMS Noise Attenuation 21.0dB

RMS Noise Attenuation 24.1dB

RMS Noise Attenuation 27.1dB

RMS Noise Attenuation 30.1dB

10,

RMS Noise Attenuation 33.1dB

11,

RMS Noise Attenuation 36.1dB

12,

RMS Noise Attenuation 39.1dB

REVISION NUMBER (011111)

REV[7:0]

The device revision number. This is ASCII representation of the device revision number i.e. ‘A, B, C etc’, as

a seven bit number, e.g.: ‘41’= A, ‘42’= B, etc.

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