am79c972b Advanced Micro Devices, am79c972b Datasheet - Page 14

• Manufacturer Part Number: am79c972b
• Description: Pcnet?-fast+ Enhanced 10/100 Mbps Pci Ethernet Controller With Onnow Support
• Manufacturer: Advanced Micro Devices

Listed By Driver Type
The following table describes the various types of out-
put drivers used in the Am79C972 controller. All I
I
14
OH
Name
LED
OMII1
OMII2
O6
OD6
STS6
TS3
TS6
TSMII
values shown in the table apply to 3.3 V signaling.
Type
LED
Totem Pole
Totem Pole
Totem Pole
Open Drain
Sustained Tri-State
Tri-State
Tri-State
Tri-State
OL
and
Am79C972
A sustained tri-state signal is a low active signal that is
driven high for one clock period before it is left floating.
I
OL
(mA)
12
4
4
6
6
6
3
6
4
I
OH
(mA)
-0.4
-0.4
NA
-4
-4
-2
-2
-2
-4
Load (pF)
390
470
50
50
50
50
50
50
50