Leds And Push Buttons - Analog Devices ADSP-BF561 EZ-KIT Lite Manual

Table 1-3. SDRAM Optimum Settings
Register
EBIU_SDGCTL
EBIU_SDBCTL
EBIU_SDRRC
1 Calculated with SCLK = 120 MHz
For more information about the memory connection on the EZ-KIT Lite,
see "External Bus Interface Unit" on page
An example program is included in the EZ-KIT installation direc-
tory to demonstrate how to set up the SDRAM interface.

LEDs and Push Buttons

The EZ-KIT Lite provides four push buttons and sixteen LEDs for gen-
eral-purpose IO.
Sixteen LEDs labeled
programmable flags
). These LEDs are accessed through the
PPI1 D15–8
the direction must be configured to output by setting the bits of the
register to "
FIO2_DIR
using one the
FIO2_FLAG_D
registers.
The four general-purpose push buttons are labeled
connect to the programmable flags
ton can be read through the
corresponding bit of the register reads "
When the switch is released, the bit reads "
ADSP-BF561 EZ-KIT Lite Evaluation System Manual
Value
0x0091998D
0x00000013
0x000003A0
through
LED5 LED20
through
PF32 PF47
". Then the value of the LEDs can be modified
1
,
FIO2_FLAG_C
PF8–5
FIO0_FLAG_D
Using EZ-KIT Lite
1
2-3.
are controlled by the processor's
(equivalent to
PPI0 D15–8
Flag 2
, , or
FIO2_FLAG_S
through
SW6
. A status of each individual but-
register. When the
", a switch is being pressed-on.
1
". A connection between the
0
and
registers. First,
FIO2_FLAG_T
. These
SW9
1-9