WM8978CGEFLSLASHV datasheet(43/118 Pages) WOLFSON

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WM8978CGEFL/V 데이터시트(PDF) 43 Page - Wolfson Microelectronics plc

부품명	WM8978CGEFL/V

상세설명	Stereo CODEC with Speaker Driver

PDF	118 Pages

Scroll/Zoom	100%

제조업체	WOLFSON [Wolfson Microelectronics plc]

홈페이지	http://www.wolfsonmicro.com

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43 / 118 page

Production Data

WM8978

PD, Rev 4.5, October 2011

ALC HOLD TIME (NORMAL MODE ONLY)

In Normal mode, the ALC has an adjustable hold time which sets a time delay before the ALC begins

its decay phase (gain increasing). The hold time is set by the ALCHLD register.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R33

ALC Control

7:4

ALCHLD

0000

ALC hold time before gain is increased.

Table 23 ALC Hold Time

If the hold time is exceeded this indicates that the signal has reached a new average level and the

ALC will increase the gain to adjust for that new average level. If the signal goes above the threshold

during the hold period, the hold phase is abandoned and the ALC returns to normal operation.

Figure 20 ALCLVL

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