Subject: Re: sonic microSCSI
To: Simon Burge <simonb@wasabisystems.com>
From: Eyal Lebedinsky <eyal@eyal.emu.id.au>
List: port-pc532
Date: 02/28/2004 19:37:30
Simon Burge wrote:
> Hi Chuck,
> 
> Chuck Silvers wrote:
> 
> [ moving your last question up to the top ]
> 
> 
>>do we know anyone that has one of the cabletron dongles that the existing
>>"se" driver supports?
> 
> 
> That would be me!  Using ttcp to measure, it's good for about 250kB/sec
> each way.  Not earth shattering, but far faster than 38.4k ppp :-)
> 
> 
>>a while back I wanted to get all the scsi ethernet dongles working,
>>but then I got busy and didn't get back to it.  but anyway...
>>
>>I have one of these sonic dongles as well, but I didn't have a power
>>supply to go with it.  do you know what p/s specs are needed for this?
>>a friend of mine played with it a bit and we tried it with something
>>he thought should work, but we eventually decided that it was just dead.
> 
> 
> The cabletron pulls in 12V.  I guess if there's a 5V regulator inside
> it's going to need slightly more than 5V in as there's a voltage drop on
> the regulator.  I just feed the yellow and black wires from a disk drive
> power cable into the right plug so I don't need external power.

I opened the case and identified the power module, it is:
	SL05S09-1SA
	http://www.unicomelectronic.com/products/dcdc.html
	SL SERIES SIP PACKAGE  DC-DC CONVERTER

There is a pdf there and it gives:
         Input voltage     5     VDC
         Output voltage   12     VDC
         Output Current  200     mA (max)
         Input current    60     mA (no load)
         Input current   580     mA (full load)
So now we know.

Does a standard AT power supply allow 580mA off a 4-pin plug? Does not
sound like much to me.

--
Eyal Lebedinsky (eyal@eyal.emu.id.au) <http://samba.org/eyal/>