Production Data
WM9090
w
PD, November 2010, Rev 4.1
69
REGISTER
ADDRESS
BIT LABEL
DEFAULT
DESCRIPTION
REFER
TO
2 DCS_TRIG_DA
C_WR_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_CH
AN_1
0
DC Servo enable for HPOUT1R
0 = Disabled
1 = Enabled
0 DCS_ENA_CH
AN_0
0
DC Servo enable for HPOUT1L
0 = Disabled
1 = Enabled
Register 54h
DC Servo 0
REGISTER
ADDRESS
BIT LABEL
DEFAULT
DESCRIPTION
REFER
TO
R85 (55h)
DC Servo 1
11:5 DCS_SERIES_
NO_01 [6:0]
010_1010 Number of DC Servo updates to perform in a series
event.
0 = 1 updates
1 = 2 updates
...
127 = 128 updates
3:0 DCS_TIMER_P
ERIOD_01
[3:0]
1010
Time between periodic updates. Time is calculated as
0.256s x (2^PERIOD)
0000 = Off
0001 = 0.52s
1010 = 266s (4min 26s)
1111 = 8519s (2hr 22s)
Register 55h
DC Servo 1
REGISTER
ADDRESS
BIT LABEL
DEFAULT
DESCRIPTION
REFER
TO
R87 (57h)
DC Servo 3
15:8 DCS_DAC_W
R_VAL_1 [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_W
R_VAL_0 [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
Register 57h
DC Servo 3
REGISTER
ADDRESS
BIT LABEL
DEFAULT
DESCRIPTION
REFER
TO
R88 (58h)
DC Servo
Readback 0
9:8 DCS_CAL_CO
MPLETE [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
