Device Family: Stratix® IV GT, Stratix® IV GX

Type: Answers

Area: Component, HSIO



Are the default XAUI PHY IP transceiver PMA settings in Quartus II Software Version 10.1-SP1 and earlier capable of implementing a XAUI compliant link in Stratix IV GX and GT devices?

Description

No, the default XAUI PHY IP transceiver PMA settings in Quartus® II Software Version 10.1-SP1 and earlier will likely not be sufficient to implement a XAUI compliant link in Stratix® IV GX and GT devices.

Actual required PMA settings for any channel are dependent upon the physical channel implementation but the following settings should provide a good starting point.

Tx Settings

  • Tx on chip termination = 100R
  • Tx VOD = 4
  • Tx pre-emphasis first post-tap = 0
  • Tx pre-emphasis pre-tap = 0
  • Tx pre-emphasis second post-tap = 0

Rx Settings

  • Rx on chip termination = 100R
  • Rx DC gain = 0
  • Rx static Equalization = disabled (or 0)

This issue will be fixed in a future version of the Quartus II Software.