WM8959 Wolfson Microelectronics Ltd., WM8959 Datasheet - Page 38
WM8959
Manufacturer Part Number
WM8959
Description
Mobile Multimedia DAC with Dual-mode Class AB/D Speaker Driver
Manufacturer
Wolfson Microelectronics Ltd.
Datasheet
1.WM8959.pdf
(155 pages)
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WM8959
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INPUT PGA ENABLE
The Input PGAs are enabled using register bits LIN12_ENA, LIN34_ENA, RIN12_ENA and
RIN34_ENA as described in Table 2.
Table 2 Input PGA Enable
To enable the input PGAs, the reference voltage VMID and the bias current must also be enabled.
See “Power Management” for definitions of the associated controls VMID_MODE and VREF_ENA.
R2 (02h)
REGISTER
ADDRESS
7
6
5
4
BIT
LIN34_ENA
(rw)
LIN12_ENA
(rw)
RIN34_ENA
(rw)
RIN12_ENA
(rw)
LABEL
DEFAULT
0b
0b
0b
0b
LIN34 Input PGA Enable
0 = disabled
1 = enabled
LIN12 Input PGA Enable
0 = disabled
1 = enabled
RIN34 Input PGA Enable
0 = disabled
1 = enabled
RIN12 Input PGA Enable
0 = disabled
1 = enabled
DESCRIPTION
PP, May 2008, Rev 3.1
Pre-Production
38
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