Re: [USRP-users] Ethernet over SFP+ in custom FPGA design (X3x0)

2017-11-28 Thread Ian Buckley via USRP-users
Christian, If memory serves me correctly the missing pages are due to that portion of the design using a proprietary NI ASIC that handles the PCIe interface and the flash storage of the FPGA config data. Since it handles config it would be reasonable to assume that circuit also supplies initial

Re: [USRP-users] Ethernet over SFP+ in custom FPGA design (X3x0)

2017-11-28 Thread Sugandha Gupta via USRP-users
I can answer the question related to the padding. I am not sure about the rest. Ettus Padding: An ethernet frame has 6 bytes of destination MAC address and 6 bytes of Source MAC address. Since we use 64 bits/8 bytes of data in one clock cycle, we add a 6 byte padding in front of the ethernet packe

Re: [USRP-users] Ethernet over SFP+ in custom FPGA design (X3x0)

2017-11-28 Thread Christian Lenz via USRP-users
Ian and Sugandha, thank you very much for your comments and also for the attached file. Sadly, another three questions remain for the moment: 1. In the attached file, there is a series of 48? bits named "Ettus Padding". Is this an Ettus specific bit sequence and where can I find information o

Re: [USRP-users] Ethernet over SFP+ in custom FPGA design (X3x0)

2017-11-09 Thread Ian Buckley via USRP-users
Christian, CHDR packets are encapsulated in UDP/IP between Host and USRP. See the attachment. PHY+ MAC functionality live under the x300_sfpp_io_core. However these blocks do not encapsulate/decapsulate the network packets. All the ethernet/IP/UDP framing fields are added by chdr_eth_framer on

Re: [USRP-users] Ethernet over SFP+ in custom FPGA design (X3x0)

2017-11-05 Thread Christian Lenz via USRP-users
Hey Sugandha, thanks for your help. I apologize for the incredible delay from my side, but back to my question. We want to port a hole IP solution from some proprietary hardware to the USRP and evaluate the costs (mainly development time) of migrating our IP to RFNoC vs. a custom image. The crux