AM79C978A AMD [Advanced Micro Devices], AM79C978A Datasheet - Page 225

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

SWITCHING WAVEFORMS
Key to Switching Waveforms
SWITCHING TEST CIRCUITS
Sense Point
Figure 56. Normal and Tri-State Outputs
WAVEFORM
C
L
Am79C978A
INPUTS
Must be
Steady
May
Change
from H to L
May
Change
from L to H
Don’t 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
“Off” State
KS000010-PAL
V
THRESHOLD
22399A-59
225