CS53L21 datasheet(9/66 Pages) CIRRUS

9 / 66 page

DS700PP1

CS53L21

2. TYPICAL CONNECTION DIAGRAMS

Figure 1. Typical Connection Diagram (Software Mode)

1 µF

+1.8 V or +2.5 V

0.1 µF

1 µF

DGND

0.1 µF

+1.8 V, +2.5 V

or +3.3 V

SCL/CCLK

SDA/CDIN

RESET

2 k

See Note 1

LRCK

AGND

AD0/CS

MCLK

SCLK

* Capacitors must be C0G or equivalent

150 pF

AFILTA

AFILTB

MICIN1

AIN3A

Microphone Input

150 pF

SDOUT

CS53L21

2 k

1 µF

BIAS2

AIN3B/MICIN2

+1.8 V or +2.5 V

AIN1A

Left Analog Input 1

1800 pF

100 k

100

AIN1B

Right Analog Input 1

Note 1:

Resistors are required for I²C

control port operation

RL See Note 3

Note 3: The value of RL is dictated

by the microphone cartridge.

Digital Audio

Processor

0.1 µF

AIN2A

Left Analog Input 2

1800 pF

AIN2B

BIAS1

Right Analog Input 2

10 µF

FILT+

Microphone Bias

1 µF

0.1 µF

100 k

100

100 k

See Note 4

Note 4:

Series resistance in the path of the power supplies must

be avoided.

TSTN

VA_

PULLUP

47 k

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