WM8581 datasheet(22/100 Pages) WOLFSON

Il numero della parte	WM8581

Spiegazioni elettronici	Multichannel CODEC with S/PDIF Transceiver

PDF	100 Pages

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Produttore elettronici	WOLFSON [Wolfson Microelectronics plc]

Homepage	http://www.wolfsonmicro.com

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WM8581

Production Data

PD Rev 4.0 April 2007

BIT

LABEL

DEFAULT

DESCRIPTION

2:0

READMUX

[2:0]

000

Determines which status register

is to be read back:

000 = Error Register

001 = Channel Status Register 1

010 = Channel Status Register 2

011 = Channel Status Register 3

100 = Channel Status Register 4

101 = Channel Status Register 5

110 = S/PDIF Status Register

CONTREAD

Continuous Read Enable.

0 = Continuous read-back mode

disabled

1 = Continuous read-back mode

enabled

R52

READBACK

34h

READEN

Read-back mode enable.

0 = read-back mode disabled

1 = read-back mode enabled

Table 9 Read-back Control Register

The 3-wire interface readback protocol is shown below. Note that the SDO pin is tri-state unless CSB

is held low; therefore CSB must be held low for the duration of the read.

Figure 7 3-Wire SPI Compatible Interface Continuous Readback

If CONTREAD is set to zero, the user can read back directly from the register by writing to the

Figure 8 below.

Figure 8 3-Wire SPI Compatible Control Interface Non-Continuous Readback

WM8581 Scheda tecnica(PDF) 22 Page - Wolfson Microelectronics plc