CDB8420
CONNECTOR
+5V
GND
OPTICAL INPUT
S/PDIF INPUT
AES3 INPUT
RS232
OPTICAL OUTPUT
S/PDIF OUTPUT
AES3 OUTPUT
J5
J6
J9
J10
INPUT/OUTPUT
Input
Input
Input
Input
Input
Input/Output
Output
Output
Output
Input/Output
Input/Output
Input
Input/Output
SIGNAL PRESENT
+5 Volt power
Ground connection from power supply
Digital Audio Interface optical input
Digital Audio Interface coaxial input
Digital Audio Interface XLR input
Parallel RS232 port for connection to serial port of PC
Digital Audio Interface optical output (always active)
Digital Audio Interface coaxial output
Digital Audio Interface XLR output
I/O for RMCLK, ISCLK,ILRCK, and SDIN
I/O for OLRCK, OSCLK, OMCK, and SDOUT
10-pin header for external programming of Atmel AVR
µC
12-pin header for CS8420 control by external
µC
Table 1. System Connections
JUMPER
PURPOSE
J11
Selects physical format of digital
audio interface input
J12
Enables AES3 INPUT
J13
J14
J16
J17
J15
POSITION
AES3 & S/PDIF
OPTICAL
ENABLE
DISABLE
Enables S/PDIF INPUT
ENABLE
DISABLE
Enables OPTICAL INPUT
ENABLE
DISABLE
Selects physical format of digital
AES3
audio interface output
S/PDIF
Enables S/PDFIF OUTPUT
ENABLE
DISABLE
Enables HARDWARE MODE MUTE
ENABLE
DISABLE
FUNCTION SELECTED
Specifies input as either AES3 or S/PDIF type
Specifies input as OPTICAL type
AES3 INPUT enabled
AES3 INPUT disabled
S/PDIF INPUT enabled
S/PDIF INPUT disabled
OPTICAL INPUT enabled
OPTICAL INPUT disabled
Specifies output as AES3 XLR
Specifies output as coaxial S/PDIF
S/PDIF OUTPUT enabled
S/PDIF OUTPUT disabled
Enables MUTE when in hardware mode 1
Disables MUTE when in hardware mode 1
Table 2. CDB8420 Jumper Settings
4
DS245DB4
CIRRUS [ CIRRUS LOGIC ]
