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Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR)
From: |
David Carr |
Subject: |
Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR) |
Date: |
Fri, 24 Jun 2005 09:32:52 -0500 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.7) Gecko/20050421 MultiZilla/1.6.4.0b |
Lets say that we use UDP/RTP. Most non connection-oriented protocols
involve an application layer connection control scheme. For TX, each
packet has a number and the device NACKs a packet if it is received when
the buffer is full. The host then retries NACKed packets at a given
interval and gives up if not successful after N tries. This is still a
lot lighter than a TCP stack (and could be done in an FPGA).
-David Carr
Eric Blossom wrote:
>On Fri, Jun 24, 2005 at 02:31:41PM +0200, Harald Welte wrote:
>
>
>>On Thu, Jun 23, 2005 at 08:52:33PM -0700, Eric Blossom wrote:
>>
>>I don't really understand why you would want flow control.
>>
>>
>>
>
>Think about the transmit path.
>
>Simplest possible test case:
>
> Software sine wave generator talking to transmit hardware. There is
> nothing throttling the signal generator. It will produce an
> infinite amount of data as quickly as it can. You want the DAC
> clock to control pacing. Any kind of host based pacing will lead to
> trouble (under or overruns).
>
>Eric
>
>
>_______________________________________________
>Discuss-gnuradio mailing list
>address@hidden
>http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>
>
>
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), (continued)
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Darrell Harmon, 2005/06/06
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), John Gilmore, 2005/06/21
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Harald Welte, 2005/06/22
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Marcus D. Leech, 2005/06/22
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Stephane Fillod, 2005/06/22
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), David Young, 2005/06/22
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Eric Blossom, 2005/06/23
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Harald Welte, 2005/06/24
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Eric Blossom, 2005/06/24
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR),
David Carr <=
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Philip Balister, 2005/06/24
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), John Gilmore, 2005/06/24
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Lamar Owen, 2005/06/25
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Marcus D. Leech, 2005/06/25
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Eric Blossom, 2005/06/26
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Eric Blossom, 2005/06/26
- [Discuss-gnuradio] FIR filter in fsk_tx.py, Sachi, 2005/06/26
- Re: [Discuss-gnuradio] FIR filter in fsk_tx.py, Sachi, 2005/06/27
- Re: [Discuss-gnuradio] FIR filter in fsk_tx.py, Matt Ettus, 2005/06/29
- Re: GigE (was Re: [Discuss-gnuradio] DSP based SDR), Stephane Fillod, 2005/06/24