WM8980CGEFLSLASHV datasheet(63/123 Pages) WOLFSON

tên linh kiện	WM8980CGEFL/V

Giải thích chi tiết về linh kiện	Stereo CODEC with Speaker Driver and Video Buffer

PDF	123 Pages

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nhà sản xuất	WOLFSON [Wolfson Microelectronics plc]

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Pre-Production

WM8980

PP, Rev 3.8, May 2012

ZERO CROSS TIMEOUT

A zero-cross timeout function is also provided so that if zero cross is enabled on the input or output

PGAs the gain will automatically update after a timeout period if a zero cross has not occurred. This

is enabled by setting SLOWCLKEN. The timeout period is dependent on the clock input to the digital

and is equal to 2

21 * input clock period.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

Additional

Control

SLOWCLKEN

Slow clock enable. Used for both the

jack insert detect debounce circuit and

the zero cross timeout.

0 = slow clock disabled

1 = slow clock enabled

Table 45 Timeout Clock Enable Control

OUT3/OUT4 MIXERS AND OUTPUT STAGES

The OUT3/OUT4 pins can provide an additional stereo line output, a mono output, or a pseudo

ground connection for headphones. There is a dedicated analogue mixer for OUT3 and one for

OUT4 as shown in Figure 31.

The OUT3 and OUT4 output stages are powered from SPKVDD and SPKGND. The individually

controllable outputs also incorporate an optional 1.5x boost and level shifting stage.

Figure 31 OUT3 and OUT4 Mixers

WM8980CGEFL/V bảng dữ liệu(PDF) 63 Page - Wolfson Microelectronics plc