CDB8420 datasheet(4/14 Pages) CIRRUS

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CDB8420

DS245DB4

CONNECTOR

INPUT/OUTPUT

SIGNAL PRESENT

+5V

Input

+5 Volt power

GND

Input

Ground connection from power supply

OPTICAL INPUT

Input

Digital Audio Interface optical input

S/PDIF INPUT

Input

Digital Audio Interface coaxial input

AES3 INPUT

Input

Digital Audio Interface XLR input

RS232

Input/Output

Parallel RS232 port for connection to serial port of PC

OPTICAL OUTPUT

Output

Digital Audio Interface optical output (always active)

S/PDIF OUTPUT

Output

Digital Audio Interface coaxial output

AES3 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

Input

10-pin header for external programming of Atmel AVR

µC

J10

Input/Output

12-pin header for CS8420 control by external

µC

Table 1. System Connections

JUMPER

PURPOSE

POSITION

FUNCTION SELECTED

J11

Selects physical format of digital

audio interface input

AES3 & S/PDIF

OPTICAL

Specifies input as either AES3 or S/PDIF type

Specifies input as OPTICAL type

J12

Enables AES3 INPUT

ENABLE

DISABLE

AES3 INPUT enabled

AES3 INPUT disabled

J13

Enables S/PDIF INPUT

ENABLE

DISABLE

S/PDIF INPUT enabled

S/PDIF INPUT disabled

J14

Enables OPTICAL INPUT

ENABLE

DISABLE

OPTICAL INPUT enabled

OPTICAL INPUT disabled

J16

Selects physical format of digital

audio interface output

AES3

S/PDIF

Specifies output as AES3 XLR

Specifies output as coaxial S/PDIF

J17

Enables S/PDFIF OUTPUT

ENABLE

DISABLE

S/PDIF OUTPUT enabled

S/PDIF OUTPUT disabled

J15

Enables HARDWARE MODE MUTE

ENABLE

DISABLE

Enables MUTE when in hardware mode 1

Disables MUTE when in hardware mode 1

Table 2. CDB8420 Jumper Settings

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