Pre-Production
WM8904
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R46 (2Eh)
5:4
L_IP_SEL_N [1:0]
00
In Single-Ended or Differential Line
Modes, this field selects the input pin
for the inverting side of the left input
path.
Analogue
Left Input 1
In Differential Mic Mode, this field
selects the input pin for the non-
inverting side of the left input path.
00 = IN1L
01 = IN2L
1X = IN3L
3:2
L_IP_SEL_P [1:0]
01
In Single-Ended or Differential Line
Modes, this field selects the input pin
for the non-inverting side of the left
input path.
In Differential Mic Mode, this field
selects the input pin for the inverting
side of the left input path.
00 = IN1L
01 = IN2L
1X = IN3L
1:0
5:4
L_MODE [1:0]
00
00
Sets the mode for the left analogue
input:
00 = Single-Ended
01 = Differential Line
10 = Differential MIC
11 = Reserved
R47 (2Fh)
Analogue
Right Input
1
R_IP_SEL_N [1:0]
In Single-Ended or Differential Line
Modes, this field selects the input pin
for the inverting side of the right input
path.
In Differential Mic Mode, this field
selects the input pin for the non-
inverting side of the right input path.
00 = IN1R
01 = IN2R
1X = IN3R
3:2
R_IP_SEL_P [1:0]
01
In Single-Ended or Differential Line
Modes, this field selects the input pin
for the non-inverting side of the right
input path.
In Differential Mic Mode, this field
selects the input pin for the inverting
side of the right input path.
00 = IN1R
01 = IN2R
1X = IN3R
R_MODE [1:0]
Sets the mode for the right analogue
input:
1:0
00
00 = Single-Ended
01 = Differential Line
10 = Differential MIC
11 = Reserved
Table 2 Input PGA Mode Selection
PP, Rev 3.3, September 2012
37
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
