Stratix10 Native XCVR IP and ATX PLL Reconfig Bus Hangs

[XD3]

Hello

We have errors accessing most reconfig registers on transceiver on the Transceiver.

We’re using Stratix10 1SGLU2F50 device, compiled with Quartus Prime Pro 21.2.

We have instantiated 1 ATX PLL and 4 Native Transceivers, Transceivers are configured for custom mode.   All 5 (1 ATX PLL + 4 XCVR) have reconfig bus enabled, on Avalon Bus, with Nios2 as the master. 

We are issuing master_read_8 and master_write_8 commands from system console.

For each of the Transceivers and ATX PLL, we can only read read-only registers. 

For example: Read to 0x481 (a read only reg) is successful, and returns value of 0x34.  (tx&rx cal not busy, PreSICE has control of config bus, and tx*rx cal busy outputs are enabled)

When we try to read a read-write registers, or any writes.  The bus hangs.  The Read/Write input to XCVR/ATXPLL goes high, and stuck high, while waiting for waitreq to go low.  Waitreq from XCVR/ATXPLL never goes low.

For Example: Reading from 0x000 or Writing to bit0 of 0x000 to take control of config bus from PreSICE, but bus hangs, write and waitreq are both stuck high. 

Attached are 2 screenshots of

• Successful read of read-only registers 0x481  (value of 0x34 returned in sysconsole, but readdatabus says 0x000)
• Bus hangs when trying to read register x0.

Also another issue is that Transceiver Toolkit crashes with java error.  Could be related to the r/w problem to reconfig bus.

[Kshitij_Intel]

Hi,

Can you please check have you enabled the options in the TX PLL and Native PHY IP mentioned in the below link.

https://www.intel.com/content/www/us/en/support/programmable/articles/000073968.html

Also, I am sharing a script please execute it and then try to read-write the registers.

Steps to execute that script.

Step 1: Goto system console file option.

Step2: Click on execute script and select the script. Click OK.

After that try to read-write the registers.

eg. % rd_channel $phy 0 0 0x144 1

Hope this will resolve your issue.

Thank you

Kshitij Goel

[Kshitij_Intel]

Hi,

Please download the file from below link.

https://www.intel.com/content/dam/altera-www/global/en_US/uploads/8/80/Ttk_helper_s10.tcl

Thank you

Kshitij Goel