EP2S180 Datasheet, PDF (22/58 Pages) Altera Corporation – DSP Development Board

Board Components
Table 2–7 shows the pin-outs for the push-button switches.
Table 2–7. Push-button Switch Pin-
Outs
Signal Name
SW4
SW5
SW6
SW7
Stratix II Pin
K14
J15
L13
J13
Configuration Status LEDs
The configuration controller is connected to four status LEDs that show
the configuration status of the board at a glance. By looking at the LEDs,
you can determine which configuration, if any, was loaded into the FPGA
at power-on. If a new configuration is downloaded into the Stratix II
device via the JTAG interface, then the USER LED (LED1) remains
illuminated. The rest of the configuration status LEDs turn off if the
unused pins are configured as inputs, tri-stated for the Stratix II device.
Table 2–8 shows the behavior of the configuration status LEDs.
Table 2–8. Configuration Status LED Indicators
LED
LED3
LED4
LED1
LED2
LED Name Color
Loading Green
Error
Red
User
Green
Factory Amber
Description
This LED blinks while the configuration controller is actively transferring
data from flash memory into the Stratix II FPGA.
If the red Error LED is illuminated, then configuration was not transferred
from flash memory into the Stratix II device. This can happen, if the flash
memory contains neither a valid user or factory configuration.
This LED illuminates when the user configuration is being transferred from
flash memory and stays illuminated when the user configuration data is
successfully loaded into the Stratix II device.
This LED illuminates when the factory configuration is being transferred
from flash memory and stays illuminated if the factory configuration was
successfully loaded into the Stratix II device.
Dual 7-Segment Display & LEDs
A dual 7-segment display and two LEDs is provided. The segments
illuminate if the Stratix II pin to which they are connected drives low. The
segemnts are not illuminated when the connected Stratix II device pin
2–14
Core Version a.b.c variable
Stratix II EP2S180 DSP Development Board Reference Manual
Altera Corporation