WM8510GEDS/RV Wolfson Microelectronics, WM8510GEDS/RV Datasheet - Page 20

• Manufacturer Part Number: WM8510GEDS/RV
• Description: Audio CODECs VolP MONO CODEC 28-pin
• Manufacturer: Wolfson Microelectronics

Specifications of WM8510GEDS/RV

• Operating Supply Voltage: - 0.3 V to + 7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8510
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The ADC is enabled by the ADCEN register bit.
Table 8 ADC Enable
The polarity of the output signal can also be changed under software control using the ADCPOL
register bit.
With ADCOSR=0 the oversample rate is 64x which gives lowest power operation and when
ADCOSR=1 the oversample rate is 128x which gives best performance.
Table 9 ADC Oversample Rate Select
SELECTABLE HIGH PASS FILTER
A selectable high pass filter is provided. To disable this filter set HPFEN=0. The filter has two
modes controlled by HPFAPP. In Audio Mode (HPFAPP=0) the filter is first order, with a cut-off
frequency of 3.7Hz. In Application Mode (HPFAPP=1) the filter is second order, with a cut-off
frequency selectable via the HPFCUT register. The cut-off frequencies when HPFAPP=1 are shown
in Table 11
Table 10 ADC Filter Select
Table 11 High Pass Filter Cut-off Frequencies (HPFAPP=1)
Note that the High Pass filter values (when HPFAPP=1) work on the basis that the SR register bits
are set correctly for the actual sample rate as shown in Table 11.
HPFCUT
000
001
010
011
100
101
110
111
R2
Power
management 2
R14
ADC Control
R14
ADC Control
REGISTER
ADDRESS
REGISTER
REGISTER
ADDRESS
ADDRESS
The oversampling rate of the ADC can be adjusted using the ADCOSR register bit.
8
82
102
131
163
204
261
327
408
8
7
6:4
SR=101/100
BIT
0
3
0
BIT
BIT
11.025
113
141
180
225
281
360
450
563
ADCEN
ADCOSR
ADCPOL
HPFEN
HPFAPP
HPFCUT
LABEL
LABEL
LABEL
12
122
153
196
245
306
392
490
612
16
82
102
131
163
204
261
327
408
0
DEFAULT
1
0
000
DEFAULT
SR=011/010
0
0
FS (KHZ)
DEFAULT
22.05
113
141
180
225
281
360
450
563
0 = ADC disabled
1 = ADC enabled
High Pass Filter Enable
0=disabled
1=enabled
Select audio mode or application mode
0=Audio mode (1
1=Application mode (2
HPFCUT)
Application mode cut-off frequency
See Table 11 for details.
24
122
153
196
245
306
392
490
612
0=64x (lower power)
1=128x (best performance)
1=inverted
ADC oversample rate select:
0=normal
32
82
102
131
163
204
261
327
408
DESCRIPTION
PD, Rev 4.5 ,September 2008
DESCRIPTION
DESCRIPTION
SR=001/000
st
44.1
113
141
180
225
281
360
450
563
order, fc = ~3.7Hz)
nd
order, fc =
Production Data
48
122
153
196
245
306
392
490
612
20