WM8994 Datasheet, PDF (112/359 Pages) Wolfson Microelectronics plc – Multi-Channel Audio Hub CODEC for Smartphones

WM8994
Production Data
REGISTER
ADDRESS
R1 (0001h)
Power
Management
(1)
BIT
LABEL
9
HPOUT1L_ENA
DEFAULT
0
8
HPOUT1R_ENA
0
R96 (0060h)
7
HPOUT1L_RMV_
0
Analogue HP
SHORT
(1)
6
HPOUT1L_OUTP
0
5
HPOUT1L_DLY
0
3
HPOUT1R_RMV_
0
SHORT
2
HPOUT1R_OUTP
0
1
HPOUT1R_DLY
0
Table 56 Headphone Output Signal Paths Control
DESCRIPTION
Enables HPOUT1L input stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set as the first step of the
HPOUT1L Enable sequence.
Enables HPOUT1R input stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set as the first step of the
HPOUT1R Enable sequence.
Removes HPOUT1L short
0 = HPOUT1L short enabled
1 = HPOUT1L short removed
For normal operation, this bit should
be set as the final step of the
HPOUT1L Enable sequence.
Enables HPOUT1L output stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set to 1 after the DC offset
cancellation has been scheduled.
Enables HPOUT1L intermediate stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set to 1 after the output signal path
has been configured, and before DC
offset cancellation is scheduled. This
bit should be set with at least 20us
delay after HPOUT1L_ENA.
Removes HPOUT1R short
0 = HPOUT1R short enabled
1 = HPOUT1R short removed
For normal operation, this bit should
be set as the final step of the
HPOUT1R Enable sequence.
Enables HPOUT1R output stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set to 1 after the DC offset
cancellation has been scheduled.
Enables HPOUT1R intermediate stage
0 = Disabled
1 = Enabled
For normal operation, this bit should
be set to 1 after the output signal path
has been configured, and before DC
offset cancellation is scheduled. This
bit should be set with at least 20us
delay after HPOUT1R_ENA.
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PD, April 2012, Rev 4.4
112