AM79C978A AMD [Advanced Micro Devices], AM79C978A Datasheet - Page 19

• Manufacturer Part Number: AM79C978A
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: AMD [Advanced Micro Devices]

PIN DESIGNATIONS
Listed By Driver Type
The following table describes the various types of output
drivers used in the Am79C978A controller. All I
I
OH
LED
O6
OD6
TS3
TS6
STS6
OMII1
OMII2
TSMII
values shown in the table apply to 3.3 V signaling.
Driver Name
LED
Totem Pole
Open Drain
Tri-State
Tri-State
Sustained Tri-State
Tri-State
Tri-State
Tri-State
Type
OL
Am79C978A
and
A sustained tri-state signal is a low active signal that is
driven high for one clock period before it is left floating.
TX is a differential output driver. Its characteristics
and those of XTAL2 output are described in the DC
CHARACTERISTICS section.
I
OL
12
(mA)
6
6
3
6
6
4
4
4
I
OH
0.4
0.4
NA
2
2
2
4
4
4
(mA)
Load (pF)
390
470
50
50
50
50
50
50
50
19