Flag Pins - Analog Devices ADSP-21369 EZ-KIT Lite Manual

System Architecture
The DPI pins are connected to the SPI flash memory, SPI of the
AD1835A codec, a UART, a 20-pin header, and five LEDs.
illustrates the EZ-KIT Lite's connections to the DPI.
To use the DPI for a different purpose, disable any signal driving a DPI
pin with a switch (see
DPI pin connected to a LED can be used without having to disconnect
the pin. You can, however, see the respective LED turn
the signal is used elsewhere on the board.
All of the DPI signals are available externally via the expansion interface
connectors (
J1—3
tors can be found in

FLAG Pins

The processor has four general-purpose I/O flag pins.
the flag pin connections.
Table 2-1. I/O FLAG Pins
Processor FLAG Pin
FLAG0
FLAG1
FLAG2
FLAG3
For information on how to disable a push button from driving its corre-
sponding flag pin, see
The signals are available externally via the expansion interface con-
FLAG
nectors ( ). The pinout of the connectors can be found in
J1—3
"ADSP-21369 EZ-KIT Lite Schematic" on page
2-6
www.BDTIC.com/ADI
"UART Enable Switch (SW5)" on page
) and 0.1" spaced header (
"ADSP-21369 EZ-KIT Lite Schematic" on page
EZ-KIT Lite Function
Push button (
Push button (
SDRAM chip select
LED8
"Push Button Enable Switch (SW7)" on page
ADSP-21369 EZ-KIT Lite Evaluation System Manual
ON
). The pinout of the connec-
P3
Table 2-1
) input
SW2
) input
SW2
B-1.
Figure 2-3
2-12). Any
and when
OFF
B-1.
describes
2-13.