am79c961 Advanced Micro Devices, am79c961 Datasheet - Page 123
am79c961
Manufacturer Part Number
am79c961
Description
Pcnettm-isa Jumperless Single-chip Ethernet Controller For Isa
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C961.pdf
(173 pages)
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SWITCHING CHARACTERISTICS: AUI
Internal MENDEC Clock Timing
Notes:
1. DI pulses narrower than t
2. DI pulses narrower than t
3. CI pulses narrower than t
4. CI pulses narrower than t
AUI Port
Parameter
Symbol
t
t
t
t
t
internal DI carrier sense off.
internal CI carrier sense off.
t
t
t
DOETD
PWODI
PWOCI
PWKDI
PWKCI
DORM
DOTR
DOTF
t
t
t
t
t
X1H
X1R
X1F
X1L
X1
Parameter Description
DO+,DO- Rise Time (10% to 90%)
DO+,DO- Fall Time (90% to 10%)
DO+,DO- Rise and fall Time Mismatch
DO+/- End of Transmission
DI Pulse Width Accept/Reject
Threshold
DI Pulse Width Maintain/Turn-Off
Threshold
CI Pulse Width Accept/Reject
Threshold
CI Pulse Width Maintain/Turn-Off
Threshold
XTAL1 Period
XTAL1 HIGH Pulse Width
XTAL1 LOW Pulse width
XTAL1 Rise Time
XTAL1 Fall Time
PWODI
PWOCI
PWKDI
PWKCI
(min) will maintain internal DI carrier sense on; pulses wider than t
(min) will maintain internal CI carrier sense on; pulses wider than t
(min) will be rejected; pulses wider than t
(min) will be rejected; pulses wider than t
P R E L I M I N A R Y
Am79C961
Test Conditions
|V
(Note 1)
|V
(Note 2)
|V
(Note 3)
|V
(Note 4)
V
V
V
V
V
IN
IN
IN
IN
IN
IN
IN
IN
IN
| > |V
| > |V
| > |V
| > |V
= External Clock
= External Clock
= External Clock
= External Clock
= External Clock
PWODI
PWOCI
ASQ
ASQ
ASQ
ASQ
|
|
|
|
(max) will turn internal DI carrier sense on.
(max) will turn internal CI carrier sense on.
49.995
Min
200
136
2.5
2.5
15
10
90
20
20
–
PWKDI
PWKCI
50.005
Max
(max) will turn
(max) will turn
375
200
160
5.0
5.0
1.0
45
26
5
5
AMD
Unit
1-597
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns