Pinouts.ru talks

English => Interfaces, Pinouts, Cables => Topic started by: besonen on Nov 09, 2007, 02:53

Title: pin 1 on 44-pin 2.5 inch pata hard drives
Post by: besonen on Nov 09, 2007, 02:53
on 44-pin 2.5 inch pata hard drives, is pin 1 always on the end of the 44-pin array that's closest to the master/slave/cable_select jumpers?
Title: Re: pin 1 on 44-pin 2.5 inch pata hard drives
Post by: Nicholas on Nov 13, 2007, 06:07
I'd expect it would be the same as on a 3.5 inch drive (we're talking about the humongous ribbon cables, right?) and I would simply refer to the pinless point for my 1 or my 44... but I'm just a kid, so I'm not sure I know what I'm talking about... ???
Title: Re: pin 1 on 44-pin 2.5 inch pata hard drives
Post by: Nicholas on Nov 13, 2007, 06:09
Quote from: Nicholas on Nov 13, 2007, 06:07
(we're talking about the humongous ribbon cables, right?)


Aaaah I was thinking of IDE... :o
Title: Re: pin 1 on 44-pin 2.5 inch pata hard drives
Post by: Myself on Nov 21, 2007, 20:57
Excellent pictures of the connector, jumper pinnings, and pin numbering:
http://www.unitechelectronics.com/44-way-ide-hd-pix.htm

For info on the special "Reduced Power Spinup" mode in Western Digital 2.5" drives, see:
http://www.wdc.com/en/library/portable/2579-001116.pdf

RPS mode can be used in external USB drive enclosures and other applications when power is tight.