Description
The mapping between the signal detect threshold voltage (Vth) and the setting in the Stratix® IV GX ALTGX MegaWizard™ is detailed in the table below.
ALTGX Setting | Threshold Voltage (Vth) |
8 | 50mV |
7 | 45mV |
6 | 40mV |
5 | 35mV |
4 | 30mV |
3 | 25mV |
2 | 20mV |
1 | 15mV |
The rx_signaldetect status signal will assert when the receiver peak-to-peak differential input voltage VID(p-p) is higher than Vth multiplied by 4.
Resolution
This information will be added to a future release of the Stratix IV handbook.