WM8960CGEFLSLASHV datasheet(49/94 Pages) CIRRUS

49 / 94 page

WM8960

Rev 4.4

THERMAL SHUTDOWN

The speaker and headphone outputs can drive very large currents. To protect the WM8960 from

overheating a thermal shutdown circuit is included and is enabled by default. If the device temperature

reaches approximately 1500C and the thermal shutdown circuit is enabled (TSDEN = 1; TSENSEN =

1) the speaker and headphone amplifiers (HP_L, HP_R, SPK_LP, SPK_LN, SPK_RP, SPK_RN and

OUT3) will be disabled. This feature can be disabled to save power when the device is in standby

mode.

TSENSEN must be set to 1 to enable the temperature sensor when using the TSDEN thermal

shutdown function. The output of the temperature sensor can also be output to the GPIO1 pin.

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

WM8960CGEFL/V Datasheet(PDF) 49 Page - Cirrus Logic

WM8960CGEFL/V Datasheet(HTML) 49 Page - Cirrus Logic

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