ADSP-BF518F EZ-Board Evaluation System Manual
1-19
Using ADSP-BF518F EZ-Board
The ADC range is controlled by jumper
JP4
. This jumper selects whether
the input range for the ADC is 2.5V or 5 V. The max voltage range for a
signal connected to the SMA connector is 0–5V. Any voltage outside of
this range can damage the EZ-Board.
For more information, see “ADC
Range Jumper (JP4)” on page 2-17.
Jumpers
JP17–28
are used to connect the SMA connector to the ADC
input. When there is no input connected to the SMA connector, the
jumper should have the shunt installed on pins 2&3. This setting con-
nects the signal going to the ADC input to ground and keeps the noise
level low. When an input signal is connected to the SMA connector, the
shunt should be installed on position 1&2.
“ADC Channel Select Jumpers (JP17–28)” on page 2-19.
For testing, switches
SW22–23
connect an audio output signal from the
codec to the input channels of the ADC. Do not connect to the SMA con-
nectors and have these switches
ON
at the same time.
information, see “Mic/HP LPBK, Audio Mode Switch (SW6)” on
page 2-10.
UART Interface
The ADSP-BF518F processor has two built-in universal asynchronous
receiver transmitters (UARTs).
UART0—1
share the processor’s pins with
other peripherals on the EZ-Board.
UART0
has full RS-232 functionality via the Analog Devices 3.3V
ADM3202 line driver and receiver (
U21
). When using
UART0
, do not set
switch
SW10
position 4 to
ON
. This setting enables UART loopback and
should be installed only when running the POST program.
UART0
and
UART1
are connected to the expansion interface II connectors.
For more information, see “Expansion Interface II Connectors (P2 and
P4)” on page 2-27.
