Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

ALT2GXB rx_pll_locked

All, I'm having a bit of a struggle with the ALT2GXB instance. I have included in my ALT2GXB variation the rx_locktorefclk and rx_locktodata input ports. According to the Stratix II GX user m...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

All,

Problem solved. The rx_locktorefclk input was being ignored. Apparently the setting that instructs the transceiver to use the rx_locktorefclk input is part of the MIF reconfiguration file. I do reconfiguration in my design and I was using an old MIF file (prior to adding the rx_locktorefclk port to my ALT2GXB variation). I had assumed that the port was a hardware only setting.

Anyway, after updating my MIF file, the rx_locktorefclk input is acknowledged and the rx_pll_locked output behaves as expected.

A priceless new piece of knowledge at least.

Jake