WM8950 datasheet(35/60 Pages) CIRRUS

35 / 60 page

WM8950

Rev 4.5

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R22

EQ Band 5

Gain Control

4:0

EQ5G

01100

(0dB)

Band 5 Gain Control. See Table 29 for

details.

6:5

EQ5C

Band 5 Cut-off Frequency:

00=5.3kHz

01=6.9kHz

10=9kHz

11=11.7kHz

Table 28 EQ Band 5 Control

GAIN REGISTER

GAIN

00000

+12dB

00001

+11dB

00010

+10dB

…. (1dB steps)

01100

0dB

01101

-1dB

11000 to 11111

-12dB

Table 29 Gain Register Table

A dedicated buffer is available for tying off unused analogue input pins as shown below Figure 18.

This buffer can be enabled using the BUFIOEN register bit.

AVDD/2

Used to tie off all unused inputs

BUFIOEN

R1[2]

Figure 18 Unused Input Pin Tie-off Buffers

THERMAL SHUTDOWN

To protect the WM8950 from overheating a thermal shutdown circuit is included. If the device

temperature reaches approximately 1250C and the thermal shutdown circuit is enabled (TSDEN=1),

an interrupt can be generated. See the GPIO and Interrupt Controller section for details.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R49

Output control

TSDEN

Thermal Shutdown Enable

0 : thermal shutdown disabled

1 : thermal shutdown enabled

Table 30 Thermal Shutdown

WM8950 Datasheet(PDF) 35 Page - Cirrus Logic

WM8950 Datasheet(HTML) 35 Page - Cirrus Logic

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

Datasheet Download

Link URL