WM8960 datasheet(47/92 Pages) WOLFSON

47 / 92 page

Production Data

WM8960

PD, August 2013, Rev 4.2

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R23 (17h)

Additional

Control (1)

TSDEN

Thermal Shutdown Enable

0 = Thermal shutdown disabled

1 = Thermal shutdown enabled

(TSENSEN must be enabled for this

function to work)

R48 (30h)

Additional

Control (4)

TSENSEN

Temperature Sensor Enable

0 = Temperature sensor disabled

1 = Temperature sensor enabled

Table 31 Thermal Shutdown

GENERAL PURPOSE INPUT/OUTPUT

The WM8960 has three dual purpose input/output pins.



LINPUT3/JD2: Analogue input or headphone detect input.



RINPUT3/JD3: Analogue input or headphone detect input.



ADCLRC/GPIO1: ADC left/right frame clock or GPIO pin.

The ADCLRC/GPIO1 pin can be configured as a left/right frame clock for the ADC, a headphone

detect input, or one of a number of GPIO output functions as shown in Table 32.

The default configuration for the LINPUT3 and RINPUT2 pins is to be analogue inputs. The default

configuration for the ADCLRC/GPIO1 pin is to be the ADC left/right frame clock.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R9 (09h)

Audio

Interface (2)

ALRCGPIO

ADCLRC/GPIO1 Pin Function Select

0 = ADCLRC frame clock for ADC

1 = GPIO pin

R48 (30h)

Additional

Control (4)

6:4

GPIOSEL

[2:0]

000

ADCLRC/GPIO1 GPIO Function Select:

000 = Jack detect input

001 = Reserved

010 = Temperature ok

011 = Debounced jack detect output

100 = SYSCLK output

101 = PLL lock

110 = Logic 0

111 = Logic 1

GPIOPOL

GPIO Polarity Invert

0 = Non inverted

1 = Inverted

R52 (34h)

Clocking (2)

8:6

OPCLKDIV

[2:0]

000

SYSCLK Output to GPIO Clock Division

ratio

000 = SYSCLK

001 = SYSCLK / 2

010 = SYSCLK / 3

011 = SYSCLK / 4

100 = SYSCLK / 5.5

101 = SYSCLK / 6

Table 32 GPIO Control

Slow clock must be enabled (TOEN = 1) when using the jack detect function. This slow clock is used

to debounce the jack detect input. The debounce period can be selected using TOCLKSEL.

The temperature sensor must be enabled for the "Temperature ok" GPIO output to function properly.

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