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Thread: TTL level




TTL level
country flaguser name
United States
2008-03-27 09:45:51

Hello NSLU2 users.
Since on week i'm the proud owner of a nslu2.
as i am also interested in old computers i know that the commodore c64
uses also ttl levels on there serial port. the fitting terminal
programm for linux computers is "CaTer" (
http://formica.nusseis.de/Cater/index.html )

Result would be a chaep terminal for the Nslu which uses a std tv as
output

now my question:
is the serial port TTL (5V) as the nslu2 wiki says or LVTTL (3.3 V)?
I dont want to kill my nlsu2 with 5V TTL......

thanks in advance,
nils

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Re: TTL level
country flaguser name
United States
2008-03-27 19:16:21

Nils Andreas wrote:
> is the serial port TTL (5V) as the nslu2 wiki says or LVTTL (3.3 V)?
> I dont want to kill my nlsu2 with 5V TTL......

It's 3.3V (and CMOS rather than TTL levels). The pins are directly
connected to the IXP42x processor.

Please fix the wiki where you've seen 5V mentioned.

-- Rod

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