How to specify 10Mbps and 100Mbps

[Altera_Forum]

Hi all, 

 How and where can I specify which LAN connection I want to use: 10Mbps or 100 Mbps; full duplex or half duplex? I am using NIOS II 5.1 'simple socket server example' on NIOS II 1S10ES Development kit.  Sincerely,  KVM.

[Altera_Forum]

--- Quote Start ---  originally posted by vizziee@May 22 2006, 11:56 AM hi all,  how and where can i specify which lan connection i want to use: 10mbps or 100 mbps; full duplex or half duplex? i am using nios ii 5.1 &#39;simple socket server example&#39; on nios ii 1s10es development kit.  sincerely,  kvm. <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15504)  --- quote end ---    --- Quote End ---    There&#39;s some registers in the LAN91C111 that you&#39;ll have to set. Go to SMSC&#39;s site and download the datasheet for the chip. The driver that ship with the Nios dev kit sets it to auto-negotiate the speed, so just search for where it does that and change it to use whatever speed you want.

[Altera_Forum]

--- Quote Start ---   <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15504)</div>   --- Quote End ---    There&#39;s some registers in the LAN91C111 that you&#39;ll have to set. Go to SMSC&#39;s site and download the datasheet for the chip. The driver that ship with the Nios dev kit sets it to auto-negotiate the speed, so just search for where it does that and change it to use whatever speed you want. <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15513)</div>   --- Quote End ---    Thanx a lot. But can u tell me by default, what line (mbps and duplex method) is used in simple_socket-server example?  Sincerely,

[Altera_Forum]

It&#39;s not just in the example or even, really, a part of the example. It&#39;s in the driver code for the 91c111. <lan91c11_comp_dir>/UCOSII/src/altera_avalon_lan91c111.c 

  - slacker

[Altera_Forum]

By default the driver allows the lan91c111 chip to auto-negotiate its capabilities with whatever it is connected to.  

 --dalon

[Altera_Forum]

--- Quote Start ---  originally posted by slacker@May 23 2006, 10:00 AM it&#39;s not just in the example or even, really, a part of the example.  it&#39;s in the driver code for the 91c111.  <lan91c11_comp_dir>/ucosii/src/altera_avalon_lan91c111.c   - slacker <div align='right'><{post_snapback}> (index.php?act=findpost&pid=15535)  --- quote end ---    --- Quote End ---    Thanks slacker. In which file and what change should I make to force the connection for 10Mbps Full Duplex mode (as I observed my custom board is malfunctioning at 100Mbps mode).  Sincerely,

[Altera_Forum]

Take a look at the existing code (which sets the PHY to auto negotiate) and modify it. I&#39;ve already mentioned which file it&#39;s in... <components>/altera_avalon_lan91c111/UCOSII/src/altera_avalon_lan91c111.c 

 There&#39;s a section which starts with the comment  /* Start the Auto Negotiation process */ /* Try to negotiate, we have a go at this five times if it fails */  You need to modify the code, in this section, to set the PHY to 10/Full. It appears that all of the masks that you&#39;ll need to do this are already provided...in the <components>/altera_avalon_lan91c111/inc/altera_avalon_lan91c111.h header file.  Best of luck!  - slacker

[Altera_Forum]

--- Quote Start ---  originally posted by slacker@Jun 28 2006, 10:28 AM take a look at the existing code (which sets the phy to auto negotiate) and modify it.  i&#39;ve already mentioned which file it&#39;s in...  <components>/altera_avalon_lan91c111/ucosii/src/altera_avalon_lan91c111.c  there&#39;s a section which starts with the comment  /* start the auto negotiation process */ /* try to negotiate, we have a go at this five times if it fails */  you need to modify the code, in this section, to set the phy to 10/full.  it appears that all of the masks that you&#39;ll need to do this are already provided...in the <components>/altera_avalon_lan91c111/inc/altera_avalon_lan91c111.h header file.  best of luck!  - slacker <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16475)</div>  --- Quote End ---    Thanks slacker.  I changed the register mask (PHY CONTROL register) in the header file altera_avalon_lan91c111_regs.h and set it for 10Mbps FDX mode. But it didn&#39;t work and gave an error &#39;Failure in initialiazing lwip_devices-init&#39; while running the rogram.  Can you give a detailed answer how I can set the speed?  Sincerely,