Cirrus-logic AN249 Manuel d'utilisateur télécharger pdf (Page 4)

AN249

The CS5340 has separate power supply pins for the analog and digital cores. The analog section is pow-

ered from the VA supply and the digital section is powered off of the VD supply. Both of these supply pins

can be powered from the same external source with a small series resistor between them for noise isola-

tion. Both the analog and digital cores can operate independently from 3.3 V to 5.0 V. The VL pin of the

CS5340 supplies the digital interface logic, supports a wide operating range from 1.8 V to 5.0 V, and can

be powered independently from the VA and VD power supplies.

Figure 2. CS5340 Typical Connection Diagram

CS5340

AINL

AINR

GND

Analog Input Filter

Figure 4

FILT+

REF_GND

1.8 V to 5.0 V

3.3 V to 5.0 V

µF

RST

Mode

Configuration

MCLK

LRCK

SCLK

Digital

Audio

Source

SDOUT

10k

Ω

Connect to:

• VL for I2S

• GND for LJ

5.1

Ω

µF

3.3 V to 5.0 V

1 µ

* Resistor may only be

used if VD is derived from

VA. If used, do not drive

any other logic from VD.

1 2 3 4 5 6 7 8 9 10

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Cirrus-logic AN249 Manuel d'utilisateur Page 4

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