WM8974GEFL/V Wolfson Microelectronics, WM8974GEFL/V Datasheet - Page 69

• Manufacturer Part Number: WM8974GEFL/V
• Description: Audio CODECs Mono Codec with Spkr
• Manufacturer: Wolfson Microelectronics

Specifications of WM8974GEFL/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-24
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
w
9 (09h)
10 (0Ah)
11 (0Bh)
12 (0Ch)
13 (0Dh)
14 (0Eh)
REGISTER
ADDRESS
3
2:0
8:0
8:7
6
5:4
3
2
1
0
8
7:0
8:0
8:0
8
7
6:4
3
2:1
BIT
GPIOPOL
GPIOSEL
DACMU
DEEMPH
DACOSR128
AMUTE
DACPOL
DACVOL
HPFEN
HPFAPP
HPFCUT
ADCOSR128
LABEL
0
000
0
00
0
0
11111111
1
0
000
0
00
0
0
0
00
DEFAULT
GPIO Polarity invert
0=Non inverted
1=Inverted
CSB/GPIO pin function select:
000=CSB input
001= Jack insert detect
010=Temp ok
011=Amute active
100=PLL clk o/p
101=PLL lock
110=Reserved
111=Reserved
Reserved
Reserved
DAC soft mute enable
0 = DACMU disabled
1 = DACMU enabled
De-Emphasis Control
00 = No de-emphasis
01 = 32kHz sample rate
10 = 44.1kHz sample rate
11 = 48kHz sample rate
DAC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
DAC auto mute enable
0 = auto mute disabled
1 = auto mute enabled
Reserved
DAC Polarity Invert
0 = No inversion
1 = DAC output inverted
Reserved
DAC Digital Volume Control
0000 0000 = Digital Mute
0000 0001 = -127dB
0000 0010 = -126.5dB
... 0.5dB steps up to
1111 1111 = 0dB
Reserved
Reserved
High Pass Filter Enable
0=disabled
1=enabled
Select audio mode or application mode
0=Audio mode (1
1=Application mode (2
Application mode cut-off frequency
See Table 11 for details.
ADC oversample rate select
0 = 64x (lowest power)
1 = 128x (best SNR)
Reserved
st
order, fc = ~3.7Hz)
DESCRIPTION
nd
order, fc = HPFCUT)
PD, Rev 4.5, September 2008
General Purpose
Input Output
General Purpose
Input Output
Output Signal Path
Output Signal Path
Power
Management
Output Signal Path
Output Signal Path
Output Signal Path
Analogue to Digital
Converter (ADC)
Analogue to Digital
Converter (ADC)
Analogue to Digital
Converter (ADC)
Power
Management
REFER TO
WM8974
69