PIN DESIGNATIONS
Listed By Driver Type
The next table describes the various types of drivers
that are used in the PCnet-PCI II controller:
Name
LED
O6
OD6
STS6
TS3
TS6
Type
LED
Totem Pole
Open Drain
Sustained Tri-State™
Tri-State
Tri-State
IOL (mA)
12
6
6
6
3
6
IOH (mA)
-0.4
-0.4
N/A
-2
-2
-2
Load (pF)
50
50
50
50
50
50
All IOL and IOH values shown in the table above apply
to 5 V signaling. See the section ‘‘DC Characteristics’’
for the values applying to 3.3 V signaling.
A sustained tri-state signal is a low active signal that is
driven high for one clock period before it is left floating.
DO, TDO and TPO are differential output drivers. The
characteristic of these and the XTAL output are de-
scribed in the section ‘‘DC Characteristics’’.
Am79C970A
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