Usb Otg Interface - Analog Devices ADSP-BF526 EZ-Board Manual

Mic gain values of 14 dB, 0 dB, or –6 dB are selectable through the
switch by turning
must be to achieve the desired gain.
OFF
Gain Switch (SW9)" on page 2-12.
Microphone bias is provided through a low-noise reference voltage. A
jumper on positions 2 and 3 of
audio jack. Placing a jumper on positions 1 and 2 of
directly to the mic signal.
(JP6)" on page 2-21.
and are 3.5 mm connectors for the audio portion of the board.
J3 J4
connects the mic on the top portion and line-in on the bottom.
nects the headphone on the top portion and line-out on the bottom. If
there is no 3.5 mm cable plugged into the bottom of either
signals are looped back inside the connector.
"Dual Audio Connectors (J3–4)" on page 2-31.
For testing,
SW10
left or right headphone. Do not connect the left and right to the
nal at the same time—only position 1 or 2 of
same time. For more information, see "Audio LPBK (Loopback) Switch
(SW10)" on page 2-13.
from line out loopback.
The EZ-Board is shipped with two 3.5 mm cables, which allow you to run
the example programs provided in the EZ-Board installation directory and
learn about the audio interface.

USB OTG Interface

The ADSP-BF526 processor has a built-in, high-speed USB OTG inter-
face and integrated PHY. The interface connects to a 24 MHz crystal (
has a surge protector, and can be configured as a host or a device. When in
ADSP-BF526 EZ-Board Evaluation System Manual
position 1, 2, or 3 (respectively). All other positions
ON
JP6
For more information, see "MIC Select Jumper
positions 1 and 2 connect the
Positions 3 and 4 of
Using The ADSP-BF526 EZ-Board
For more information, see "MIC
connects the
MICBIAS
JP6
For more information, see
MICIN
should be
SW10
disconnect the line in
SW10
SW9
signal to the
connects the bias
J4
con-
J3
or , the
J3 J4
signal to either the
sig-
MICIN
at the
ON
),
Y2
1-23