WM8711
POWER CONSUMPTION
OSCPD
OUTPD
DACPD
MODE DESCRIPTION
POWEROFF
CLKOUTPD
CURRENT CONSUMPTION
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MIN
Playback
Playback Oscillator and
CLKOUT disabled
Standby
Power Down
0
0
0
1
0
1
1
X
0
1
1
X
0
0
1
X
0
0
1
1
TYP
7
6
0.05
0.01
MAX
UNITS
mA
mA
mA
mA
Table 1 Powerdown Mode Current Consumption Examples
Notes:
1.
2.
3.
AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, T
A
= +25
o
C. Slave Mode, fs = 48kHz,
MCLK = 256fs (12.288MHz).
All figures are quiescent, with no signal.
The power dissipation in the headphone itself not included in the above table.
MASTER CLOCK TIMING
t
XTIL
MCLK
t
XTIH
t
XTIY
Figure 1 System Clock Timing Requirements
Test Conditions
AVDD, HPVDD, DBVDD = 3.3V, AGND = 0V, DCVDD = 1.5V, DGND = 0V, T
A
= +25
o
C, Slave Mode fs = 48kHz, MCLK =
256fs unless otherwise stated.
PARAMETER
System Clock Timing Information
MCLK System clock pulse width high
MCLK System clock pulse width low
MCLK System clock cycle time
MCLK Duty cycle
SYMBOL
T
XTIH
T
XTIL
T
XTIY
TEST CONDITIONS
MIN
18
18
54
40:60
TYP
MAX
UNIT
ns
ns
ns
60:40
WOLFSON MICROELECTRONICS LTD
PP Rev 1.2 November 2000
6
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
