SATA host IP for cyclone IV GX ?

Ironmoose,

I’m trying to implement the SATA protocol using the Stratix 4 ALTGX transceiver.

We have our own SATA controller.

We are doing the 8b/10b encoding in the link layer as the

SATA standards specifies.

However in the “Transceiver Architecture in Stratix IV Devices” document it says:

In Basic functional mode, you can enable the optional rx_signaldetect signal (used

for protocols such as SATA and SAS) only if you select the 8B/10B block.

This will not work for us. We need the rx_signaldetect signal, but we can’t do

the 8b/10b in the PHY layer since we are already doing it in the link layer.

how did you get around this problem.

I did noticed that is easy to trick MW into providing the rx_signaldetect output without having to select 8b10b encoding, and it does seem to work in simulation, but will it

work in real hardware?

skg