Article ID: 000084304 Content Type: Troubleshooting Last Reviewed: 08/13/2012

Do I need to connect pin 8 of the EthernetBlaster when programming the non-volatile Design Security key into Stratix III devices?

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Description

No, you can leave pin 8 of the EthernetBlaster unconnected when programming the non-volatile key into Stratix® III devices, as Stratix III devices do not require 3.7V for non-volatile key programming, unlike the Stratix II and Stratix II GX device families.  For more information refer to AN 512: Using the Design Security Feature in Stratix III Devices (PDF).

For non-volatile key programming of Stratix II or Stratix II GX devices, pin 8 of the EthernetBlaster connects to signal DESSEC_DISABLE of the voltage regulator circuit used to control VCCPD8 to supply 3.7V during key programming. This circuit is described in AN 341: Using the Design Security Feature in Stratix II and Stratix II GX Devices (PDF).

Related Products

This article applies to 3 products

Stratix® III FPGAs
Stratix® II GX FPGA
Stratix® II FPGAs

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