W682510_05 Datasheet, PDF (14/35 Pages) Winbond – DUAL-CHANNEL VOICEBAND CODECS

W682510/W682310
7.5.2. Power Down Mode
When the power up indicator pin, PUI, is set LOW all internal circuits will go into the power down state.
It will take 2 to 10 milliseconds for the PLL to lock when operation is resumed with the FST and BCLK
signals applied and PUI set HIGH. An additional 1-millisecond delay is used to set the analog outputs
to the signal ground reference in order to avoid power up glitches. The digital open drain outputs will
remain at high impedance during this power up delay.
7.5.3. Power Save/Down Output pin state
The following table shows the states of the output pins in the power save or power down mode.
TABLE 7.5: OUTPUT PIN STATES
Output Pin
Product Name
AO1-, A02-
RO1, RO2
W682510
V_SSA
Signal Ground
W682310
High Z
Signal Ground
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