AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 228

• Manufacturer Part Number: AM79C978
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: Advanced Micro Devices

SWITCHING WAVEFORMS
Key to Switching Waveforms
SWITCHING TEST CIRCUITS
228
Sense Point
Figure 56. Normal and Tri-State Outputs
WAVEFORM
C
L
Am79C978
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
22206B-59