Cirrus Logic CS4270 - Manual (Page 7)

DS686F1 7
CS4270
3. TYPICAL CONNECTION DIAGRAM
Figure 1. CS4270 Typical Connection Diagram
CS (I2S/LJ) / AD0
SDA/CDOUT (M1)
SCL/CCLK (M0)
AINA
AINB
RST
Power
Down
and Mode
Settings
(Control Port)
AOUTA
MUTEA
AOUTB
MUTEB
Analog Output
Network
and Mute
LRCK
SCLK
MCLK
Timing Logic
and
Clocks
SDIN
) S (M/ SDOUT Audio Data
Processor
DGND
FILT+
AGND
VQ
VD VA
+3.3 V to 5 V
+3.3 V to 5 V
CS4270
2
GND or VD
47 k 
5.1 
Analog Input
Network
47 µF 0.1 µF
10 µF 0.1 µF
1 µF 0.1 µF
1 µF
If using separate supplies for
VA and VD, 5.1
 resistor not
needed. See "Grounding and
Power Supply Decoupling."
VLC +1.8 V to 5 V
2.
1
1
1.
3 3
3. Use pull-up resistors in Software
Mode. In Stand-Alone Mode, use
pull-up or pull-down. See "Mode
Selection & De-Emphasis."
2 k 2 k 
In Stand-Alone mode, use a
47 kO pull-down to select
Slave Mode or 47 kO pull-up to
VD to select Master Mode. See
"Master/Slave Mode Selection."
AD1/CDIN (MDIV2)
AD2 (MDIV1)
0.1 µF
0.1 µF