am79c960 Advanced Micro Devices, am79c960 Datasheet - Page 99

• Manufacturer Part Number: am79c960
• Description: Pcnettm-isa Single-chip Ethernet Controller
• Manufacturer: Advanced Micro Devices

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
Am79C960
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
1-441
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns