wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 154

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

WM8918
Register 4Dh DC Servo Readback 0
w
Readback 0
REGISTER
REGISTER
ADDRESS
ADDRESS
R77 (4Dh)
R90 (5Ah)
DC Servo
Analogue
HP 0
11:8
BIT
BIT
7:4
3:0
7
6
5
4
3
HPR_RMV_SH
R_COMPLETE
DCS_STARTU
P_COMPLETE
DCS_CAL_CO
HPL_RMV_SH
HPL_ENA_OU
DCS_DAC_W
HPL_ENA_DL
MPLETE[3:0]
HPL_ENA
LABEL
LABEL
ORT
[3:0]
[3:0]
TP
Y
DEFAULT
DEFAULT
0000
0000
0000
0
0
0
0
0
DC Servo Complete status
[3] - LINEOUTR
[2] - LINEOUTL
[1] - HPOUTR
[0] - HPOUTL
0 = DAC Write or Start-Up DC Servo mode not
completed.
1 = DAC Write or Start-Up DC Servo mode complete.
DC Servo DAC Write status
[3] - LINEOUTR
[2] - LINEOUTL
[1] - HPOUTR
[0] - HPOUTL
0 = DAC Write DC Servo mode not completed.
1 = DAC Write DC Servo mode complete.
DC Servo Start-Up status
[3] - LINEOUTR
[2] - LINEOUTL
[1] - HPOUTR
[0] - HPOUTL
0 = Start-Up DC Servo mode not completed..
1 = Start-Up DC Servo mode complete.
Removes HPOUTL short
0 = HPOUTL short enabled
1 = HPOUTL short removed
For normal operation, this bit should be set as the final
step of the HPL Enable sequence.
Enables HPOUTL 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 HPOUTL 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 HPL_ENA.
Enables HPOUTL input stage
0 = Disabled
1 = Enabled
For normal operation, this bit should be set as the first
step of the HPL Enable sequence.
Removes HPOUTR short
DESCRIPTION
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
REFER TO
Production Data
154