Table 1. System Connections; Table 2. Cdb8420 Jumper Settings - Cirrus Logic CDB8420 Manual

CONNECTOR
+5V
GND
OPTICAL INPUT
S/PDIF INPUT
AES3 INPUT
RS232
OPTICAL OUTPUT
S/PDIF OUTPUT
AES3 OUTPUT
J5
J6
J9
J10
JUMPER
J11 Selects physical format of digital
audio interface input
J12 Enables AES3 INPUT
J13 Enables S/PDIF INPUT
J14 Enables OPTICAL INPUT
J16 Selects physical format of digital
audio interface output
J17 Enables S/PDFIF OUTPUT
J15 Enables HARDWARE MODE MUTE
4
INPUT/OUTPUT
Input +5 Volt power
Input Ground connection from power supply
Input Digital Audio Interface optical input
Input Digital Audio Interface coaxial input
Input Digital Audio Interface XLR input
Input/Output Parallel RS232 port for connection to serial port of PC
Output Digital Audio Interface optical output (always active)
Output Digital Audio Interface coaxial output
Output Digital Audio Interface XLR output
Input/Output I/O for RMCLK, ISCLK,ILRCK, and SDIN
Input/Output I/O for OLRCK, OSCLK, OMCK, and SDOUT
10-pin header for external programming of Atmel AVR µC
Input
12-pin header for CS8420 control by external µC
Input/Output

Table 1. System Connections

PURPOSE

Table 2. CDB8420 Jumper Settings

SIGNAL PRESENT
POSITION
AES3 & S/PDIF Specifies input as either AES3 or S/PDIF type
OPTICAL Specifies input as OPTICAL type
ENABLE AES3 INPUT enabled
DISABLE AES3 INPUT disabled
ENABLE S/PDIF INPUT enabled
DISABLE S/PDIF INPUT disabled
ENABLE OPTICAL INPUT enabled
DISABLE OPTICAL INPUT disabled
AES3 Specifies output as AES3 XLR
S/PDIF Specifies output as coaxial S/PDIF
ENABLE S/PDIF OUTPUT enabled
DISABLE S/PDIF OUTPUT disabled
ENABLE Enables MUTE when in hardware mode 1
DISABLE Disables MUTE when in hardware mode 1
CDB8420
FUNCTION SELECTED
DS245DB4