WM8978 Wolfson Microelectronics Ltd., WM8978 Datasheet - Page 36

• Manufacturer Part Number: WM8978
• Description: The WM8978 is a low power, high quality stereo codec designed for portable applications such as Digital still camera or Digital Camcorde
• Manufacturer: Wolfson Microelectronics Ltd.

WM8978
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Table 16 ADC Enable Control
Table 17 High Pass Filter Cut-off Frequencies (HPFAPP=1). Values in Hz.
Note that the High Pass filter values (when HPFAPP=1) are calculated with the assumption that the
SR register bits are set correctly for the actual sample rate as shown in Table 17.
HPFCUT
[2:0]
000
001
010
011
100
101
110
111
R14
ADC Control
REGISTER
ADDRESS
102
131
163
204
261
327
408
82
8
8
7
6:4
SR=101/100
BIT
11.025
113
141
180
225
281
360
450
563
HPFEN
HPFAPP
HPFCUT
LABEL
122
153
156
245
306
392
490
612
12
102
131
163
204
261
327
408
16
82
1
0
000
DEFAULT
SR=011/010
fs (kHz)
22.05
113
141
180
225
281
360
450
563
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 17 for details.
122
153
156
245
306
392
490
612
24
102
131
163
204
261
327
408
32
82
PTD Rev 2.6 November 2005
DESCRIPTION
SR=001/000
Preliminary Technical Data
st
44.1
113
141
180
225
281
360
450
563
order, fc = ~3.7Hz)
nd
order, fc =
122
153
156
245
306
392
490
612
48
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