AM79C90 Advanced Micro Devices, AM79C90 Datasheet - Page 42
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AM79C90
Manufacturer Part Number
AM79C90
Description
CMOS Local Area Network Controller for Ethernet (C-LANCE)
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C90.pdf
(62 pages)
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KEY TO SWITCHING WAVEFORMS
SWITCHING WAVEFORMS (Note 1)
42
AMD
RENA
RCLK
RX
CLSN
WAVEFORM
Serial Link Timing (Collision)
Serial Link Timing (Receive)
P R E L I M I N A R Y
18
17
Am79C90
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
20
16
15
12
13
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
10
11
73
KS000010
17881B-39
14
19
17881B-40