CS4226 Datasheet, PDF (33/60 Pages) Cirrus Logic – Surround Sound Codec

CS4226
Miscellaneous Pins
FILT - PLL Loop Filter Pin, PIN 15.
A capacitor, C_FILT, in series with a resistor, R_FILT, should be connected from FILT to AGND.
Additionally a capacitor, C_RIP, should be placed in parallel with C_FILT and R_FILT. See Figure 1
for recommended component values.
PDN - Powerdown Pin, PIN 8.
When low, the CS4226 enters a low power mode and all internal states are reset, including the
control port. When high, the control port becomes operational and the RS bit must be cleared
before normal operation will occur.
DS188F1
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