Maxim Integrated │ 5

www.maximintegrated.com

Evaluates: MAXAUDINT1

Audio Interface 1

appears as a sound card to the PC and shows up as a

USB Audio playback device in Windows’ Sound dialog.

Configure the

USB Audio device as the default playback

device (by pressing

Set Default) to have audio from the

PC streamed onto the AUDINT1 board. When audio is

being streamed onto the AUDINT1 board, LEDB (located

to the left of the XMOS device) turns on.

In order for the audio stream to be routed onto the con-

in the CONNECTED position (Table 5).

Note: The PCM digital audio signals are routed through

a level-translator/buffer (U5 and U7) and a switch (U3)

before routing to the J1 connector.

*Default position.

X = Don’t care

MCLK SWITCH

MSEL SWITCH

CLOCK SOURCE

DISCONNECTED

X

On-board clock is not provided to DEV board. Use this setting if the DEV board does not

require a master clock or if an external master clock is used. Connect the external master

clock to pin 2 of header J3 or pin 1 of connector J1.

CONNECTED*

SEL

The on-board clock selected by the evaluation software (11.2896MHz, 12MHz, or

12.288MHz).

CONNECTED

12MHz

On-board 12MHz oscillator

*Default position.

SWITCH

ACTUATOR

POSITION

DESCRIPTION

DISCONNECT

CONNECT*

DISCONNECT

CONNECT*

MCLK

DISCONNECT

Disconnects the MCLK clock output from the J1 connector

CONNECT*

Connects the MCLK clock output to the J1 connector

MSEL

SEL*

Master clock output connected to one of the three on-board clocks

(11.2896MHz, 12MHz, 12.288MHz).

12MHz

Master clock output connected to the on-board 12MHz oscillator

SW1

DEMO

Interface board evaluated in demonstration mode

EVAL*

Interface board evaluated in evaluation mode

HEADER

SHUNT

POSITION

DESCRIPTION

DVDD

+1.2V

Provides +1.2V to the digital logic rail on the J1 connector (pin 13)

+1.8V*

Provides +1.8V to the digital logic rail on the J1 connector (pin 13)

+3.3V

Provides +3.3V to the digital logic rail on the J1 connector (pin 13)

GND

Grounds the digital logic rail on the J1 connector (pin 13)

VIO

+1.8V*

Provides +1.8V to the I/O logic rail on the J1 connector (pin 15)

+3.3V

Provides +3.3V to the I/O logic rail on the J1 connector (pin 15)

*Default position.

Table 6. Master Clock Configuration

Table 5. Switch Configuration

Table 4. Jumper Configuration