AM79C985 Datasheet, PDF (39/48 Pages) Advanced Micro Devices – enhanced Integrated Multiport Repeater Plus (eIMR+™)

PRELIMINARY
KEY TO SWITCHING WAVEFORMS
WAVEFORM
INPUTS
OUTPUTS
Must be
Steady
Will be
Steady
May
Change
from H to L
Will be
Changing
from H to L
May
Change
from L to H
Will be
Changing
from L to H
Don’t Care,
Any Change
Permitted
Changing,
State
Unknown
Does Not
Apply
Center
Line is High-
Impedance
“Off” State
KS000010-PAL
SWITCHING WAVEFORMS
t _CLKH
t _CLK
t _CLKL
CLK
t _CLKR
t _CLKF
Figure 16. Clock Timing
20650A-20
20651B-21
Am79C985
39