Audio Interface
1-22
ADSP-BF526 EZ-Board Evaluation System Manual
The PHY portion of the Ethernet chip connects to a Pulse HX1188 mag-
netics (
U28
), then to a standard RJ-45 Ethernet connector (
J5
).
information, see “Ethernet Connector (J5)” on page 2-32.
Example programs are included in the EZ-Board installation directory to
demonstrate how to use the Ethernet interface.
In low-power consumption applications that do not require Ethernet, the
P21—22
jumpers can be removed to disconnect the power from the
LAN8700 PHY and Ethernet oscillator.
For more information, see “ETH
PWR Jumpers (P21–22)” on page 2-25.
Audio Interface
The audio interface of the EZ-Board consists of a low-power stereo codec,
ADI SSM2603, with an integrated headphone driver and associated pas-
sive components. There are two inputs, a stereo line in, and a mono
microphone, as well as two outputs, a headphone, and a stereo line out.
The codec has integrated stereo analog-to-digital converters (ADCs) and
digital-to-analog converters (DACs) and requires minimal external
circuitry.
The codec connects to the ADSP-BF526 processor via the processor’s
serial port 0A (alternate). The
SPORT0A
port and 2-wire interface (TWI)
are disconnected from the codec by turning switches
SW2
and
SW7
OFF
,
which enable
SPORT0A
on the expansion interface II. See
ENBL Switches/I2C ENBL (SW2 and SW7)” on page 2-11
for more
information.
The TWI of the ADSP-BF526 processor is used to setup and control the
codec. The default TWI address is
0011011
. The TWI can be disconnected
from the codec by turning positions 3 and 4 of
SW2
OFF
. Refer to
“SPORT0A ENBL Switches/I2C ENBL (SW2 and SW7)” on page 2-11
for more information.
