XAUI Phy in Stratix IV GX

Hello Jens,

Could you please share your xaui project? I'm trying to test by using a hsmc loopback and i'm failing on it.

Thank you!

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Hi Nick,

Now I'm using XAUI_PHY LPM instead of ALTGX. At the receiver the upper and lower 32 Bits of data and corresponding control bytes are swapped sometimes.

Transmit:

control: 0xFF, 0xFF, 0x01

data: 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x1111 1111 2222 22FB

Receive:

control: 0x0F, 0x0F, 0x1F

data: 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x2222 22FB 0707 0707 (tel:0707 0707)

In some cases at Receive:

control: 0xFF, 0xFF, 0x01

data: 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x0707 0707 0707 0707 (tel:0707 0707 0707), 0x1111 1111 2222 22FB

After Idle-Code Gap I do the alignment manually by means of detecting the START Code (0xFB) in the upper or lower 32 Bit word.

Because we are using our own protocol we can do that. I don't know how its viable in case of 10GE.

Good Luck!

Jens

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