[En-Nut-Discussion] JTAG Mk ii and Ethernut 1.3d

[Pearless]

Hi,

Has any one connected these and got them working?

I notice that the pin out on the back on the plug on the JTAG Mkii unit
appears to be the opposite of what I was expecting based on the connections
for http://www.ethernut.de/en/jtag/jtagconn.html where pin 10 is, is where I
would expect pin 1 to be, etc.

Before I try it, I assume that I am wrong??

Has any one else got a mkII unit working with a 1.3r0d board?

Douglas.

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Pearless
Sent: Tuesday, 14 September 2004 9:15 p.m.
To: 'Ethernut User Chat (English)'
Subject: RE: [En-Nut-Discussion] EtherNut r2.1 with a SIPX483
speedsgreaterthat250kbps

In my case, the number of nodes is small, probably no more than 6.

I have ordered some SP471ECN parts and will see how they perform in the real
world...

Douglas

-----Original Message-----
From: en-nut-discussion-bounces at egnite.de
[mailto:en-nut-discussion-bounces at egnite.de] On Behalf Of Harald Kipp
Sent: Tuesday, 14 September 2004 7:47 p.m.
To: Ethernut User Chat (English)
Subject: RE: [En-Nut-Discussion] EtherNut r2.1 with a SIPX483
speedsgreaterthat 250kbps

As far as I can say, there are three main criteria for
RS485 drivers:

1. Speed vs. slew rate
2. Number of nodes, that can be driven
3. ESD protection

Rudy Van Raemdonck suggested to replace the Sipex by
a TI type capable of driving 128 nodes, but they seem
to be difficult to purchase. So we still mount Sipex
SP483ECN. Another interesting manufacturer is
http://www.zywyn.com/

Harald

At 08:39 14.09.2004 +1200, you wrote:

>Actually it will need to be the SP481ECN as the SP485 does not comes in an 
>ECN package
>
>
>
>Douglas.

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