Article View: comp.sys.transputer
Article #301Re: C011 Link Adaptors
From: MJP
Date: Wed, 04 Oct 1989 13:40
Date: Wed, 04 Oct 1989 13:40
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2448 bytes
In a recent article, Kevin Bertram writes:
> I have a problem with the C012 Link adapter which the product
>data sheets don't have an answer for. And I thought that maybe someone
>here, in this news group, could answer it for me.
> On the C012 Link adapter chip pin 14 has the function of
>"SeperateIQ". What does this pin do and what should its logic state be
>for normal functioning of the chip? The block diagram of the chip towards
>the front of the data sheets don't include this pin name and the pin name
>description list has forgotten it too.
> One more thing. The "CapMinus" line connects to the "Minus" side
>of a capacitor but where does the positive side go? Is it safe to assume
>Vcc?
>
> Thanks for any help you might have.
>
> -Kevin (kevin@latcs1.oz)
>
The data sheet I use (printed in the Transputer Databook, First Edition
1989) indicates that pin 14 has the function HoldToGND, NOT SeparateIQ.
However, SeparateIQ on the C011 (pin16) selects Mode 2 when connected to
GND, Mode 1 10 Mbits/s when connected to Vcc, and Mode 1 20 Mbits/s when
connected to ClockIn.
The capacitor positive end does go to Vcc.
Cheers, ***************************************************
Magnus Paterson, * janet - mjp@uk.ac.roe.vaxb *
Royal Observatory, * cbsmail - cbs%uk.ac.roe.vaxb::mjp *
Edinburgh * earn - mjp@vaxb.roe.ac.uk *
Scotland * arpa - mjp%vaxb.roe.ac.uk@nss.cs.ucl.ac.uk *
* arpa - mjp%vaxb.roe.ac.uk@ukacrl.bitnet *
If all else fails, * span - 19463::revad::mjp *
ph. 031-668-8247 * starlink - revad::mjp *
fax 031-668-8264 * psimail - psi%000007002002::mjp *
* janet - mjp@uk.ac.roe.star *
***************************************************
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uakari.primate.wisc.edu!gem.mps.ohio-state.edu!usc!ucsd!ucbvax!vaxb.roe.ac.uk!MJP From: MJP@vaxb.roe.ac.uk Newsgroups: comp.sys.transputer Subject: Re: C011 Link Adaptors Message-ID: <202006A5_00100B88.0092BC3D7DC141C0$16_1@UK.AC.ROE.VAXB> Date: 4 Oct 89 13:40:27 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 39