WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 99

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

Pre-Production
w
25 (19h)
27 (1Bh)
28 (1Ch)
29 (1Dh)
30 (1Eh)
REGISTER
ADDRESS
8:7
6:4
3:0
8
7
6:0
8
7
6:0
8
7
6:0
8
7
6:0
BIT
LIMLVL
LIMBOOST
NFU
NFEN
NFA0[13:7]
NFU
NFA0[6:0]
NFU
NFA1[13:7]
NFU
NFA1[6:0]
LABEL
00
000
0000
0
0
0000000
0
0
0000000
0
0
0000000
0
0
0000000
DEFAULT
Reserved. Initialise to 0
Programmable signal threshold level
(determines level at which the DAC limiter starts
to operate)
000=-1dB
001=-2dB
010=-3dB
011=-4dB
100=-5dB
101 to 111=-6dB
DAC Limiter volume boost (can be used as a
stand alone volume boost when LIMEN=0):
0000=0dB
0001=+1dB
0010=+2dB
… (1dB steps)
1011=+11dB
1100=+12dB
1101 to 1111=reserved
Notch filter update. The notch filter values used
internally only update when one of the NFU bits
is set high.
Notch filter enable:
0=Disabled
1=Enabled
Notch Filter a0 coefficient, bits [13:7]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits
is set high.
Reserved. Initialise to 0
Notch Filter a0 coefficient, bits [6:0]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits
is set high.
Reserved. Initialise to 0
Notch Filter a1 coefficient, bits [13:7]
Notch filter update. The notch filter values used
internally only update when one of the NFU bits
is set high.
Reserved. Initialise to 0
Notch Filter a1 coefficient, bits [6:0]
DESCRIPTION
PP, Rev 3.5, January 2007
Output Signal
Path
Output Signal
Path
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
Analogue to
Digital
Converter
(ADC)
REFER TO
WM8985
99