Leds And Push Buttons - Analog Devices ADSP-BF537 EZ-KIT Lite Manual

LEDs and Push Buttons

The frame sync and bit clocks are generated from the ADC and feed to the
processor because the ADC is operating in master mode. The audio inter-
face samples data at a 48 kHz sample rate. The serial data interface
operates in 2-wire interface (TWI) mode and connects to
processor.
The audio interface can be disconnected from the
positions 1 and 5 of the
signals can be used on the
SPORT0
sion interface (see
Enable Switch (SW7)" on page 2-12
Example programs are included in the EZ-KIT Lite installation directory
to demonstrate audio circuit operation.
LEDs and Push Buttons
The EZ-KIT Lite provides four push buttons and six LEDs for gen-
eral-purpose IO.
The six LEDs, labeled
cessor pins. For information on how to program the pins, refer to the
ADSP-BF537 Blackfin Processor Hardware Reference.
The four general-purpose push button are labeled
status of each individual button can be read through programmable flag
(PF) inputs,
PF5
being pressed-on. When the switch is released, the PF reads
tion between the push button and PF input is established through the
DIP switch. See
An example program is included in the EZ-KIT Lite installation directory
to demonstrate functionality of the LEDs and push buttons.
1-18
switch
SW7
SPORT0
"SPORT0 Connector (P6)" on page 2-25
through
LED1
through . A PF reads
PF2
"LEDs and Push Buttons" on page 2-18
ADSP-BF537 EZ-KIT Lite Evaluation System Manual
SPORT0
. When in the
OFF
connector (
P6
for more information).
, are accessed via the
LED6
SW10
when a corresponding switch is
1
of the
SPORT0
by turning
position, the
OFF
) or on the expan-
and "Audio
pro-
PF11–6
through . A
SW13
. A connec-
0
SW5
for details.