Altera Stratix II EP2S180 DSP Development Board Uživatelský manuál stáhnout pdf (Strana 22)

2–14 Core Version a.b.c variable Altera Corporation

Stratix II EP2S180 DSP Development Board Reference Manual

Board Components

Table 2–7 shows the pin-outs for the push-button switches.

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.

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

Table 2–7. Push-button Switch Pin-

Outs

Signal Name Stratix II Pin

SW4 K14

SW5 J15

SW6 L13

SW7 J13

Table 2–8. Configuration Status LED Indicators

LED LED Name Color Description

LED3 Loading Green This LED blinks while the configuration controller is actively transferring

data from flash memory into the Stratix II FPGA.

LED4 Error Red 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.

LED1 User Green 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.

LED2 Factory Amber 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.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 57 58

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Altera Stratix II EP2S180 DSP Development Board Uživatelský manuál Strana 22