CDPCLK4 datasheet(259/274 Pages) ALTERA

259 / 274 page

Chapter 11: SEU Mitigation in the Cyclone III Device Family

11–7

Software Support

December 2011

Altera Corporation

Cyclone III Device Handbook

Volume 1

Software Support

Enabling the CRC error detection feature in the Quartus II software generates the

CRC

_ERROR output to the optional dual purpose CRC_ERROR pin.

To enable the error detection feature using CRC, perform the following steps:

1. Open the Quartus II software and load a project using Cyclone III device family.

2. On the Assignments menu, click Settings. The Settings dialog box appears.

3. In the Category list, select Device. The Device page appears.

4. Click Device and Pin Options, as shown in Figure 11–2.

5. In the Device and Pin Options dialog box, click the Error Detection CRC tab.

6. Turn on Enable error detection CRC.

7. In the Divide error check frequency by box, enter a valid divisor as documented

in Table 11–5 on page 11–6.

1 The divisor value divides down the frequency of the configuration

oscillator output clock. This output clock is used as the clock source for the

error detection process.

8. Click OK.

Figure 11–2. Enabling the Error Detection CRC Feature in the Quartus II Software

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