WM8990ECS/RV Wolfson Microelectronics, WM8990ECS/RV Datasheet - Page 42

• Manufacturer Part Number: WM8990ECS/RV
• Description: Audio CODECs Stereo CODEC w.Class AB/D speaker driver
• Manufacturer: Wolfson Microelectronics

Specifications of WM8990ECS/RV

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8990
w
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.
Figure 24 LIN4 or RIN4 as Line Inputs
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
PD, March 2009, Rev 4.0
Production Data
42