lcleveland at VNET.IBM.COM
Mon Jan 23 10:41:10 PST 1995
Ron is trying to valid a SCSI Driver design for me and has the following
question can somebody please answer.
I have a question about section 6.1.2 e. of the FAST-20 working draft.
From the words below e) it appears that the intent is to insure that
the driver will drive 22 mA at ALL voltages below 2,0 V. I believe
that the way e) is written it is only necessary for the driver to
drive 22 mA at ANY voltage below 2,0 V. For example, I believe that
driving 22 mA at 0,0 V would meet section e) , but I'm not sure that
was the intent.
Perhaps a better wording would be:
e) Ioh (high-level output current > 22 mA (signal negated) @
Voh = 2,0 V. d.c.
Note the = rather than < on the voltage.
If I'm misunderstand the intent of e) please clarify the intent.
Ronald DeRemer, Advisory Engineer, VLSI Circuit Development
More information about the T10