WM8722 datasheet(14/23 Pages) WOLFSON

Part #	WM8722

Description	Stereo DAC with Integrated Tone Generator and Line/Variable Level Outputs

PDF	23 Pages

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Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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14 / 23 page

WM8722

Advanced Information

WOLFSON MICROELECTRONICS LTD

AI Rev 1.5 May 2000

FUNCTION

OPTIONS

SOFTWARE CONTROL

DEFAULT VALUE

DAC digital volume

Lch, Rch individually

Lch, Rch common

0dB (111111)

Lch, Rch individually (0)

Mixer Volume Control

Lch, Rch individually

Lch, Rch both

0dB (10111)

Lch, Rch individually (0)

Mixer Output Selection

5 switches for each of left and

right, mix and volume paths,

individually controlled, or both

together, and with –6dB gain

option for mono modes

Normal stereo

(11100) MLMX left mux

(11100) MLVMX left mux

(11100) MRMX right mux

(11100) MRVMX right mux

M6DB bits all 0 (gain 0dB)

Tone amplitude

0 to –46.5dB in 1.5dB steps

plus mute

0dB (11111)

Tone frequency

1 to 32767Hz in 1Hz steps

(based on 27MHz TCLK)

0 = disabled

Tone duration

0.1 to 25.5secs in 0.1sec

steps

0 = disabled

Tone

Finish

Behaviour

(TFIN)

1 = Full cycle sine wave

0 = next zero cross

Tone Waveform

Sine or square wave

0 = sine

1 = square wave

Tone Burst

f or 2f

0 = f

1 = 2f

Table 4. Control Functions

WM8722 Datasheet(PDF) 14 Page - Wolfson Microelectronics plc

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