12 Aug
2012
12 Aug
'12
4:33 p.m.
On 08/12/2012 07:23 PM, Dave wrote:
The problem is that in general you can't. You can have eight separate links
but you can't have them carrying a byte stream, one bit per link. You can't
make all the links are identical. This means as speeds increase the bits
arrive at different times, so you can't clock them out a byte at a time. You
also get cross talk between the links. That's why we have gone SATA rather
than PATA.
Well that was one of the reasons. ;) ATA/IDE was one of the
worst-designed interconnects in the history of this industry. Even the
PC weeniez knew it had to go. SATA, for all of its faults, is a godsend!
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
These days you also get various flavours of SATA and
SAS, Fibre
Channel and FireWire. In fact as speeds rise serial
interfaces tend
to become the interfacee of choice.
At least until someone notices "hey, if we run another 7 data
pairs, we can get 8 times the data rate for free!". And the
cycle of reincarnation continues....