[SI-LIST] Re: MAX. IDE CABLE Length?
- From: "Jay Shenoy" <jshenoy@xxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Thu, 8 Aug 2002 09:45:47 -0700
Hi Brahim,=20
In a similar situation - but with a proprietary bus - we
used PTFE dielectric, controlled impedance cables from Gore.=20
Our impedance needs were 50 Ohms and required length was 24 inches.
This mini-project had a very short time frame and a shoestring budget,=20
so we picked an off-the-shelf configuration. The lack of any NRE=20
more than compensated for the somewhat pricey per-unit tag (needed=20
multiple ~ 32-bit wide cables because the bus was wide).
Our on-paper timing budget indicated that we would have adequate
margin at 80 MHz and it ran flawlessly at that target (and of course we=20
had success running it faster too). Turned out to be fairly robust,=20
this configuration even went to a trade show and far outlived it's=20
expected usefulness.
Regards
Jay Shenoy
-------------------------------------------------------------------------=
Date: Wed, 07 Aug 2002 17:22:39 -0700
From: Brahim Koudssi <brahim@xxxxxxxxxxxx>
Subject: [SI-LIST] MAX. IDE CABLE Length?
Dear SI group,
I am building a debug station that requires a long IDE, Integrated
Device Electronics, cable ~1meter.
My questions are the followings:
1. What is the max. length of cable I can use without affecting signal
integrity?
2. Any suggestions what type of cable(s) to use?
Thanks you
Brahim
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