Cirrus Logic CS8420 - Manual (Page 12)

12 DS245F4
CS8420
2. TYPICAL CONNECTION DIAGRAM
CS8420
Cable
Termination RXP
RXN
AES3/
SPDIF
Source
3-wire Serial
Audio Source
ILRCK
ISCLK
SDIN
Clock Source
and Control RMCK
OMCK
Hardware
Control
RST
RERR
EMPH
TCBL
To other
CS8420's
Cable
Interface
AES3/
SPDIF
Equipment
TXP
TXN
3-wire Serial
Audio Input
Device OLRCK
OSCLK
SDOUT
Microcontroller
SDA/CDOUT
AD0 / CS
SCL/CCLK
AD1/CDIN
U
INT
VA+ VD+
Ferrite *
Bead
+5V
Analog
Supply * +5V
Digital
Supply
0.1 F μ
0.1 F
μ
* A separate analog supply is only necessary in applications where
RMCK is used for a jitter sensitive task. For applications where
RMCK is not used for a jitter sensitive task, connect VA+ to VD+
via a ferrite bead. Keep the decoupling capacitor between VA+
and AGND.
DGND FILT AGND
RFILT
CFILT CRIP
H/S
47k
Ω
/ AD2
Figure 5. Recommended Connection Diagram for Software Mode