WM8804 datasheet(20/66 Pages) WOLFSON

Part #	WM8804

Description	1:1 Digital Interface Transceiver with PLL

PDF	66 Pages

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Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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20 / 66 page

WM8804

Production Data

PD Rev 4.1 September 2007

DIGITAL ROUTING CONTROL

Figure 15 Digital Routing Paths within the WM8804

Digital signal routing within the WM8804 is controlled by the TXSRC register. In order to ensure

proper operation when changing TXSRC, the S/PDIF transmitter module should be powered down

prior to changing the TXSRC control register and powered up again once the routing path has been

changed.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R30

PWRDN

1Eh

SPDIFTXPD

S/PDIF Transmitter Powerdown

0 = S/PDIF transmitter enabled

1 = S/PDIF transmitter disabled

R21

SPDTX4

15h

TXSRC

S/PDIF Transmitter Data Source

0 = S/PDIF Received Data –

SPDIFTXCLK Source = CLK2

1 = Digital Audio Interface

Received Data – SPDIFTXCLK

Source = MCLK Input/Output

Signal at MCLK Pin

Table 18 Digital Signal Routing Control Registers

WM8804 Datasheet(PDF) 20 Page - Wolfson Microelectronics plc