AM79C989JCT Advanced Micro Devices, AM79C989JCT Datasheet - Page 31

• Manufacturer Part Number: AM79C989JCT
• Description: Quad Ethernet Switching Transceiver (QuEST)
• Manufacturer: Advanced Micro Devices

KEY TO SWITCHING WAVEFORMS
WAVEFORM
P R E L I M I N A R Y
Am79C989
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
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
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