WM8945ECSSLASHR datasheet(71/169 Pages) WOLFSON

Teilenummer	WM8945ECS/R

Bauteilbeschribung	Mono Low-Power CODEC with Video Buffer and Touch Panel Controller

PDF	169 Pages

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Hersteller	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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Production Data

WM8945

PD, May 2011, Rev 4.1

8-bit mode (without Companding) may be enabled by setting DAC_COMPMODE=1 or

ADC_COMPMODE=1, when DAC_COMP=0 and ADC_COMP=0.

LOOPBACK

A loopback function is provided for test and evaluation purposes. When the LOOPBACK register bit is

set, the DAC input data is fed through the DSP Core to the ADC output, as illustrated in Figure 30.

Figure 30 Audio Interface Loopback

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R5 (05h)

Companding

control

LOOPBACK

Digital Loopback Function

0 = No loopback

1 = Loopback enabled (DACDAT

input is fed through the DSP Core to

the ADCDAT output).

Table 47 Loopback Control

DIGITAL PULL-UP AND PULL-DOWN

The WM8945 provides integrated pull-up and pull-down resistors on each of the DACDAT, LRCLK

and BCLK pins. This provides a flexible capability for interfacing with other devices. Each of the pull-

up and pull-down resistors can be configured independently using the register bits described in Table

48.

WM8945ECS/R Datenblatt(PDF) 71 Page - Wolfson Microelectronics plc