-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tue, Jun 19, 2018 at 09:11:43AM -0400, rhkra...@gmail.com wrote: > On Tuesday, June 19, 2018 08:02:11 AM Richard Hector wrote: > > On 19/06/18 23:47, rhkra...@gmail.com wrote: > > > On Monday, June 18, 2018 11:27:55 PM Stefan Monnier wrote: > > >> So I think your cable is much less "Serial" than you think. > > > > > > Just because I'm tired of seeing this thread (even though I make an often > > > feeble attempt to ignore it), I will mention that Ethernet is serial ;-) > > > (full duplex in many cases) > > > > Ah, but is it still? > > > > Gigabit (1000base-T) uses all 4 pairs simultaneously, and also encodes > > multiple bits per symbol, which I think makes it effectively parallel. > > Well, I'm not familiar with gigabit Ethernet. But even using all 4 pairs > simultaneously means that it might be some combination of serial and parallel > (I mean, 4 pairs isn't sufficient to carry 8 bits in parallel).
Parallel doesn't necessarily mean 8 bit. And 100BaseT sends three voltage levels over the differential pair, so it's a tad more than 1.5 bits per "wire". But then, it's 4B5B (because it has to weave in the clock) so it's a tad less. 1 gigabit uses more pairs, but I guess each one is used serially (because of clock skew), so it's more like "a bundle of serial", and uses a more complex modulation (PAM), so it's more bits/baud even. I think the "classical" distinction serial/parallel breaks down a bit here... Cheers - -- t -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iEYEARECAAYFAlspDD8ACgkQBcgs9XrR2ka6SQCeO+qm5efz53V2P14joV1kJiq8 2JUAn2YewcteQgmpMJyUOODGXnIpmTDj =2xp1 -----END PGP SIGNATURE-----