AM79C971VCW Advanced Micro Devices, AM79C971VCW Datasheet - Page 211

• Manufacturer Part Number: AM79C971VCW
• Description: PCnet-FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
• Manufacturer: Advanced Micro Devices

KEY TO SWITCHING WAVEFORMS
SWITCHING TEST CIRCUITS
Sense Point
Figure 58. Normal and Tri-State Outputs
WAVEFORM
C
L
Am79C971
INPUTS
Must be
Steady
May
Change
from H to L
May
Change
from L to H
DonÕt Care ,
Any Change
Permitted
Does Not
Apply
I
I
OL
OH
OUTPUTS
Will be
Steady
Will be
Changing
from H to L
Will be
Changing
from L to H
Changing,
State
Unknown
Center
Line is High-
Impedance
ÒOff Ó State
V
THRESHOLD
20550D-61
211