WM8960CGEFL/2RV Ver la hoja de datos (PDF) - Wolfson Microelectronics plc

Número de pieza

componentes Descripción

Fabricante

WM8960CGEFL/2RV

Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

Wolfson Microelectronics plc 

Production Data

WM8960

REGISTER BIT

ADDRESS

LABEL

DEFAULT

DESCRIPTION

R40 (28h)

6:0 SPKLVOL

Left Speaker

[6:0]

Volume

0000000

(MUTE)

SPK_LP/SPK_LN Volume

1111111 = +6dB

… 1dB steps down to

0110000 = -73dB

0101111 to 0000000 = Analogue MUTE

7

SPKLZC

0

Left Speaker Zero Cross Enable

1 = Change gain on zero cross only

0 = Change gain immediately

8

SPKVU

0

Speaker Volume Update

0 = Store SPKLVOL in intermediate latch

(no gain change)

1 = Update left and right channel gains

(left = SPKLVOL, right = intermediate

latch)

R41 (29h)

6:0

Right Speaker

Volume

SPKRVOL

[6:0]

0000000

(MUTE)

SPK_RP/SPK_RN Volume

1111111 = +6dB

… 1dB steps down to

0110000 = -73dB

0101111 to 0000000 = Analogue MUTE

7

SPKRZC

0

Right Speaker Zero Cross Enable

1 = Change gain on zero cross only

0 = Change gain immediately

8

SPKVU

0

Speaker Volume Update

0 = Store SPKRVOL in intermediate

latch (no gain change)

1 = Update left and right channel gains

(left = intermediate latch, right =

SPKRVOL)

R51 (33h)

Class D

Control (3)

5:3 DCGAIN

[2:0]

000

(1.0x)

DC Speaker Boost (Boosts speaker DC

output level by up to 1.8 x on left and

right channels)

000 = 1.00x boost (+0dB)

001 = 1.27x boost (+2.1dB)

010 = 1.40x boost (+2.9dB)

011 = 1.52x boost (+3.6dB)

100 = 1.67x boost (+4.5dB)

101 = 1.8x boost (+5.1dB)

110 to 111 = Reserved

2:0 ACGAIN

[2:0]

000

(1.0x)

AC Speaker Boost (Boosts speaker AC

output signal by up to 1.8 x on left and

right channels)

000 = 1.00x boost (+0dB)

001 = 1.27x boost (+2.1dB)

010 = 1.40x boost (+2.9dB)

011 = 1.52x boost (+3.6dB)

100 = 1.67x boost (+4.5dB)

101 = 1.8x boost (+5.1dB)

110 to 111 = Reserved

Table 25 SPK_L/SPK_R Volume and Speaker Boost Control

To prevent pop noise, DCGAIN and ACGAIN should not be modified while the speaker outputs are

enabled.

To avoid clipping at speaker ground, ACGAIN should not be greater than DCGAIN.

w

PD, August 2013, Rev 4.2

39

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