WM8778EDSSLASHR datasheet(26/50 Pages) WOLFSON

Teilenummer	WM8778EDS/R

Bauteilbeschribung	24 BIT 192KHZ STEREO CODEC

PDF	50 Pages

Scroll/Zoom	100%

Hersteller	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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26 / 50 page

WM8778

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PP Rev 1.7 June 2004

Figure 21 Application and Release of Soft Mute

Figure 21 shows the application and release of DMUTE whilst a full amplitude sinusoid is being

played at 48kHz sampling rate. When DMUTE (lower trace) is asserted, the output (upper trace)

begins to decay exponentially from the DC level of the last input sample. The output will decay

towards VMID with a time constant of approximately 64 input samples. If DMUTE is applied to both

channels for 1024 or more input samples the DAC will be muted if IZD is set. When DMUTE is de-

asserted, the output will restart immediately from the current input sample.

Note that all other means of muting the DAC: setting the PL[3:0] bits to 0, setting the PDWN bit or

setting attenuation to 0 will cause much more abrupt muting of the output.

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WM8778EDS/R Datenblatt(PDF) 26 Page - Wolfson Microelectronics plc