Production Data
WM9090
w
PD, November 2010, Rev 4.1
49
REGISTER
ADDRESS
BIT LABEL
DEFAULT DESCRIPTION
R84 (54h)
DC Servo 0
5
DCS_TRIG_START
UP_1
0
Writing 1 to this bit selects Start-
Up DC Servo mode for
HPOUT1R.
In readback, a value of 1
indicates that the DC Servo
Start-Up correction is in
progress.
4
DCS_TRIG_START
UP_0
0
Writing 1 to this bit selects Start-
Up DC Servo mode for
HPOUT1L.
In readback, a value of 1
indicates that the DC Servo
Start-Up correction is in
progress.
3
DCS_TRIG_DAC_W
R_1
0
Writing 1 to this bit selects DAC
Write DC Servo mode for
HPOUT1R.
In readback, a value of 1
indicates that the DC Servo DAC
Write correction is in progress.
2
DCS_TRIG_DAC_W
R_0
0
Writing 1 to this bit selects DAC
Write DC Servo mode for
HPOUT1L.
In readback, a value of 1
indicates that the DC Servo DAC
Write correction is in progress.
1
DCS_ENA_CHAN_1
0
DC Servo enable for HPOUT1R
0 = Disabled
1 = Enabled
0
DCS_ENA_CHAN_0
0
DC Servo enable for HPOUT1L
0 = Disabled
1 = Enabled
R87 (57h)
DC Servo 3
15:8
DCS_DAC_WR_VA
L1 [7:0]
0000 0000
DC Offset value for HPOUT1R in
DAC Write DC Servo mode.
Two’s complement format.
LSB is 0.25mV.
Range is -32mV to +31.75mV
7:0
DCS_DAC_WR_VA
L0 [7:0]
0000 0000
DC Offset value for HPOUT1L in
DAC Write DC Servo mode.
Two’s complement format.
LSB is 0.25mV.
Range is -32mV to +31.75mV
R88 (58h)
DC Servo
Readback 0
9:8
DCS_CAL_COMPL
ETE [1:0]
00
DC Servo Complete status
0 = DAC Write or Start-Up DC
Servo mode not completed.
1 = DAC Write or Start-Up DC
Servo mode complete.
Bit [1] = HPOUT1R
Bit [0] = HPOUT1L
5:4 DCS_DAC_WR_CO
MPLETE [1:0]
00
DC Servo DAC Write status
0 = DAC Write DC Servo mode
not completed.
1 = DAC Write DC Servo mode
complete.
Bit [1] = HPOUT1R
Bit [0] = HPOUT1L
