Fwd: Delivery Status Notification (Failure)

Amitai Broyde <[email protected]> Fri, 15 Jul 2016 11:45:19 +0000
Newsgroups gmane.comp.hardware.bus.can
Message-ID <CACkzUiPeh=0dV-_-Xs+eS8AThn674RcUQ1A56BNj5naUf8MeUQ@mail.gmail.com>
---------- Forwarded message ---------
From: Mail Delivery Subsystem <[email protected]>
‪Date: יום ו׳, 15 ביולי 2016 ב-13:45‬
Subject: Delivery Status Notification (Failure)
To: <[email protected]>

Hi,
The cable is a controlled 120 OHM cable (5nS/m) by Axon Cables . Don't
recall the exact p/n. I would like to extend the bus to about 30m.
The dominant to recessive loop worst case delay is 400nS, there are 16
nodes nodes. All nodes clocks' use XOs - several ppm accuracy.
What the risk of edgy sampling? it is still 125nS in.

Regards,
ab

‫בתאריך יום ו׳, 15 ביולי 2016 ב-10:52 מאת ‪John Dammeyer‬‏ <‪
[email protected]‬‏>:‬
<[email protected]>

> That puts the sample point at the 87.5% point and is really on the edge.
You
> haven’t described how long a bus you want to create or what type of cable
> you want to use.  All that will affect how long a bus you can make at
> that bit rate.
>
> John Dammeyer

> Hi,
>
> I am using 1Mbps CAN network based on Cores running at 8MHz. I would like
> to extend the bus length by setting sampling point 125ns before end of bit
> time. Current bit sampling time is 250ns before end of bit time.
>
> Will it work?
>
>
>
> Regards,
>
> ab
>The cable is a controlled 120 OHM cable (5nS/m) by Axon Cables . Don't
recall the exact p/n. I would like to extend the bus to about 30m.
The dominant to recessive loop worst case delay is 400nS, there are 16
nodes nodes. All nodes clocks' use XOs - several ppm accuracy.
What the risk of edgy sampling? it is still 125nS in.

Regards,
ab

‫בתאריך יום ו׳, 15 ביולי 2016 ב-10:52 מאת ‪John Dammeyer‬‏ <‪
[email protected]‬‏>:‬
<[email protected]>

> That puts the sample point at the 87.5% point and is really on the edge.
You
> haven’t described how long a bus you want to create or what type of cable
> you want to use.  All that will affect how long a bus you can make at
> that bit rate.
>
> John Dammeyer

> Hi,
>
> I am using 1Mbps CAN network based on Cores running at 8MHz. I would like
> to extend the bus length by setting sampling point 125ns before end of bit
> time. Current bit sampling time is 250ns before end of bit time.
>
> Will it work?
>
>
>
> Regards,
>
> ab
>