WM8581 datasheet(77/100 Pages) WOLFSON

Part #	WM8581

Description	Multichannel CODEC with S/PDIF Transceiver

PDF	100 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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77 / 100 page

Production Data

WM8581

PD Rev 4.0 April 2007

PRIMARY AUDIO INTERFACE (TX) MASTER MODE CONTROL

In Hardware Control Mode, the SDIN pin is used to enable the master mode function on the Primary

Audio Interface transmitter. This has the same operation as the PAIFTX_MS register bit. The

PAIFTX_RATE default settings of 256fs, and 64 BCLKs/LRCLK for BCLKSEL, are used in Hardware

Control Mode. See page Error! Bookmark not defined. for more information on master mode

operation.

SDIN

AUDIO INTERFACE (TX)

Slave

Master

Table 74 Audio Interface (Transmitter) Master Mode Hardware Mode Control

POWERDOWN CONTROL

In Software Control Mode, the device is powered-down by default. In Hardware Control Mode, the

chip is powered-up by default but can be powered down by setting the ALLPD(MFP7) input high.

(Note that in Software Control Mode, this pin takes the function of SAIF_LRCLK or GPO7).

ALLPD (MFP7)

Powerup

Powerdown

Table 75 Hardware Mode Powerdown Control

WM8581 Datasheet(PDF) 77 Page - Wolfson Microelectronics plc