Using Flag Pins - Analog Devices ADSP-21161N EZ-KIT Lite Manual

Using FLAG Pins

The ADSP-21161N holds 12 asynchronous FLAG IO pins. Ten of these
pins ( ) are available for interaction with the running program.
FLAG0–9
After the processor is reset, the FLAGs are configured as inputs. The direc-
tions of the FLAGs are configured though the
and read though the
Table 2-2. For more information on FLAGs, refer to the ADSP-21161
SHARC Processor Hardware Reference.
Table 2-2. FLAG Pin Summary
1
FLAG
FLAG0
FLAG1
FLAG2
FLAG3
FLAG4–FLAG9
and
FLAG10
FLAG11
1 are available on connector
FLAG0–FLAG3
ADSP-21161N EZ-KIT Lite Evaluation System Manual
registers. The FLAG registers are summarized in
FLAG
Connects To
/
SW1 AD1836_SPI_SELECT
/
SW2 AD1852_SPI_SELECT
SW3
SW4
LED2–LED7
Not connected
MODE2
Description
connects to push button
FLAG0
input and to the
SPI
audio codec.
connects to push button
FLAG1
input and to the
SPI
auxiliary DAC.
connects to push button
FLAG2
input.
connects to push button
FLAG3
input.
connect to LEDs on the EZ-KIT Lite
FLAG4–9
board and are for user output.
Not available
.
P10
Using EZ-KIT Lite
register and are set
for user
SW1
select pin on the AD1836
for user
SW2
select pin on the AD1852
for user
SW3
for user
SW4
2-5