WM8961 datasheet(21/116 Pages) WOLFSON

部件名	WM8961

功能描述	Ultra-Low Power Stereo CODEC with 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers

PDF	116 Pages

Scroll/Zoom	100%

制造商	WOLFSON [Wolfson Microelectronics plc]

网页	http://www.wolfsonmicro.com

标志

21 / 116 page

WM8961

Pre-Production

PP, August 2009, Rev 3.1

Figure 8 2-Wire Serial Control Interface (single write)

Device ID

MSByte Data

(1)

LSByte Data

Device ID

Index

(0)

Figure 9 2-Wire Serial Control Interface (single read)

Figure 10 2-Wire Serial Control Interface (multiple write using auto-increment)

Figure 11 2-Wire Serial Control Interface (multiple read using auto-increment)

A Write Sequencer allows register write sequences to be stored in an area of memory on the WM8961

and then triggered by another register write. This allows complex sequences of updates to the

WM8961 registers without the constant intervention of the processor. To use the write sequencer, an

MCLK must be present and CLK_SYS_ENA=1. Refer to section headed “Control Write Sequencer”

for operation of the Write Sequencer.

ALERT RESPONSES

By default WM8961 does not respond to Control interface alert response messages. This can be

enabled by setting the ARA_ENA bit as detailed in Table 3.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R252 (FCh)

General test 1

ARA_ENA

Alert Response Address Enable

0 : off

1 : on

AUTO_INC

Enable Auto-Increment

0 : off

1 : on

Table 3 Control Interface Settings

WM8961 数据表(PDF) 21 Page - Wolfson Microelectronics plc

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