WM8904
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
Time between periodic updates for
LINEOUTL/LINEOUTR. Time is calculated as 0.256s
x (2^PERIOD)
DC Servo
R69 (45h)
DC Servo 2
11:8
DCS_TIMER_PE
RIOD_23 [3:0]
1010
0000 = Off
0001 = 0.52s
1010 = 266s (4min 26s)
1111 = 8519s (2hr 22s)
Time between periodic updates for
HPOUTL/HPOUTR. Time is calculated as 0.256s x
(2^PERIOD)
DC Servo
3:0
DCS_TIMER_PE
RIOD_01 [3:0]
1010
0000 = Off
0001 = 0.52s
1010 = 266s (4min 26s)
1111 = 8519s (2hr 22s)
Register 45h DC Servo 2
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DC Servo
Number of DC Servo updates to perform in a series
event for LINEOUTL/LINEOUTR.
R71 (47h)
DC Servo 4
6:0
DCS_SERIES_N 010_1010
O_23 [6:0]
0 = 1 updates
1 = 2 updates
...
127 = 128 updates
Register 47h DC Servo 4
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DC Servo
Number of DC Servo updates to perform in a series
event for HPOUTL/HPOUTR.
R72 (48h)
DC Servo 5
6:0
DCS_SERIES_N 010_1010
O_01 [6:0]
0 = 1 updates
1 = 2 updates
...
127 = 128 updates
Register 48h DC Servo 5
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
DC Servo
DC Offset value for LINEOUTR in DAC Write DC
Servo mode in two's complement format.
R73 (49h)
DC Servo 6
7:0
DCS_DAC_WR_ 0000_0000
VAL_3 [7:0]
In readback, the current DC offset value is returned in
two's complement format.
Two’s complement format:
LSB is 0.25mV.
Range is +/-32mV
Register 49h DC Servo 6
PP, Rev 3.3, September 2012
162
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
