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Recent content by melexia

  1. M

    SFP loopback with rocket io GTP

    Hi, I am using virtex 5 custom board and transmitting some fixed data bytes through GTP. GTP is connected to SFP. When I connect fibre cable from one SFP to another and loopback data on another end , I receive data properly. But when I connect SFP LC Loopback assembly to the SFP module few...
  2. M

    framedrop signal problem in TEMAC Virtex-5

    Hello, I am trying to implement TEMAC with SGMII with RX-TX shorted from outside i.e. at connector. I am sending a constant packet from client side with source and destination address same, this works in simulation perfectly. But when I put this code on fpga I find that framedrop signal at...
  3. M

    problem with udp/ip core from opencores

    Hi all, I am simulating udp/ip core downloaded from open cores. But it seems that its arp.vhd is not working properly. Have anybody done this before please help Thanks and Regards,
  4. M

    Uisng LwIP with onchip 64k BRAM

    No, in BSB 64k is maximum
  5. M

    Uisng LwIP with onchip 64k BRAM

    Hi all, I am trying to use LwIP for developing UDP/IP stack in microblaze. Unfortunately I dont have any memory available on board so I have to use internal BRAM as LMB. But when I started coding for the same I found that I will have to use lwip_init() function to initialize LwIP and it is not...
  6. M

    data read write between microblaze and custom IP using PLB

    Thanks for replying I found one linux code for configuring temac. I followed same procedure but when I tried to debug my code I found that I am being able to write data to ll_fifo but TEMAC is not getting started, probably its DCM lock bit is not getting high. I am unable to figure out why it is...
  7. M

    data read write between microblaze and custom IP using PLB

    I am using it as a custom IP because its easy to configure TEMAC using coregen. Also I get access to all its ports for debugging. While using TEMAC IP available in EDK I have to depend upon register read/write sequence, I even dont know how to do that. I feel that its bit complicated and slow...
  8. M

    data read write between microblaze and custom IP using PLB

    Hi all I am using EDK 11.1. I have generated a TEMAC core in ISE using core generator, wrote some VHDL code to handle data packets. I have added this TEMAC core to my xmp project i.e. microblaze as a custom IP through PLB. Now my aim is to write data from microblaze to custom IP so that it will...
  9. M

    where to check code size in EDK or SDK

    I am using EDK11.1 in which XPS and SDK can be separately accessed.
  10. M

    where to check code size in EDK or SDK

    Hi all, I am generating an EDK design for microblaze. Because of some project limitations I have only internal BRAM to use as code and data memory. I have made a code which is running fine but now I have to check its size and see how much place I have left with for incresing functionality of...
  11. M

    how to connect microblaze to custom VHDL code in ISE

    Yes it is a way of customizing and easiest also, but I was wondering if there is any standard method which people use. Meanwhile I read about using dual port BRAM and use it on both sides. thanks and regards,
  12. M

    how to connect microblaze to custom VHDL code in ISE

    hey thanks for replying. I have implemented it successfully. Currently I have not gone upto full speed data transfer but I got the basic idea. But still I think that this is a customized solution and not a standard practice, there must be some standard ways for the same e.g.using OPB which I...
  13. M

    how to connect microblaze to custom VHDL code in ISE

    Hi all, I am generating an EDK project through ISE. I have gone through all tutorials. I have also done adding custom IP whcih can be a VHDL code. But now if I have a huge VHDL logic which is performing all my data acquisition tasks and I have to use a microblaze just for taking this data...
  14. M

    1000 base-X ethernet over cat 5 cable

    1000Base-X is surely not used with copper media interfaces generally. -X is further defined as -LX and -SX depending upon the characteristics of fiber used. I dont think 1Gbit ethernet is a synonym for 1000Base-X because you dont have a fibre/ SFP port to a computer. I have searched on internet...
  15. M

    1000 base-X ethernet over cat 5 cable

    @permute Yes 1000 base-X is an alternative to SGMII. While comparing 1000 base-t and 1000 base-x I concluded that in 1000 base-t actual bit rate is 1000 Mbits per second and in 1000 base-x actual bit rate is 1250 Mbits per second (to accommodate 10 bit information). But then this will mean I...
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