WM8976CGEFLSLASHV datasheet(65/114 Pages) WOLFSON

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WM8976CGEFL/V 데이터시트(PDF) 65 Page - Wolfson Microelectronics plc

부품명	WM8976CGEFL/V

상세설명	Stereo CODEC with Speaker Driver

PDF	114 Pages

Scroll/Zoom	100%

제조업체	WOLFSON [Wolfson Microelectronics plc]

홈페이지	http://www.wolfsonmicro.com

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65 / 114 page

Production Data

WM8976

PD, Rev 4.5, November 2011

A dedicated buffer is available for tying off unused analogue I/O pins as shown in Figure 34. This

buffer can be enabled using the BUFIOEN register bit.

If the SPKBOOST, OUT3BOOST or OUT4BOOST bits are set then the relevant outputs will be tied to

the output of the DC level shift buffer at 1.5xAVDD/2 when disabled.

Figure 34 summarises the tie-off options for the speaker and mono output pins.

Figure 34 Unused Input/Output Pin Tie-off Buffers

L/ROUT2EN/

OUT3/4EN

OUT3BOOST/

OUT4BOOST/

SPKBOOST

VROI

OUTPUT CONFIGURATION

1kΩ tie-off to AVDD/2

30kΩ tie-off to AVDD/2

1kΩ tie-off to 1.5xAVDD/2

30kΩ tie-off to 1.5xAVDD/2

Output enabled (DC level=AVDD/2)

Output enabled (DC level=1.5xAVDD/2)

Table 53 Unused Output Pin Tie-off Options

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