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EP4CE40 Datasheet(PDF) 253 Page - Altera Corporation

Part # EP4CE40
Description  Cyclone IV Device Handbook, Volume 1
PDF  488 Pages
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Manufacturer  ALTERA [Altera Corporation]
Direct Link  http://www.altera.com
Logo ALTERA - Altera Corporation

EP4CE40 Datasheet(HTML) 253 Page - Altera Corporation

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Chapter 9: SEU Mitigation in Cyclone IV Devices
9–7
Software Support
May 2013
Altera Corporation
Cyclone IV Device Handbook,
Volume 1
1 The divisor value divides 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.
Accessing Error Detection Block Through User Logic
The error detection circuit stores the computed 32-bit CRC signature in a 32-bit
register, which is read out by user logic from the core. The cycloneiv_crcblock
primitive is a WYSIWYG component used to establish the interface from the user
logic to the error detection circuit. The cycloneiv_crcblock primitive atom contains
the input and output ports that must be included in the atom. To access the logic
array, the cycloneiv_crcblock WYSIWYG atom must be inserted into your design.
Figure 9–2. Enabling the Error Detection CRC Feature in the Quartus II Software



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