AM79C970AKCW AMD [Advanced Micro Devices], AM79C970AKCW Datasheet - Page 180
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AM79C970AKCW
Manufacturer Part Number
AM79C970AKCW
Description
PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79C970AKCW.pdf
(219 pages)
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SWITCHING CHARACTERISTICS: AUI
Notes:
1. DI pulses narrower than t PWODI (min) will be rejected; pulses wider than t PWODI (max) will turn internal DI carrier sense on.
2. DI pulses narrower than t PWKDI (min) will maintain internal DI carrier sense on; pulses wider than t PWKDI (max) will turn internal
3. CI pulses narrower than t PWOCI (min) will be rejected; pulses wider than t PWOCI (max) will turn internal CI carrier sense on.
4. CI pulses narrower than t PWKCI (min) will maintain internal CI carrier sense on; pulses wider than t PWKCI (max) will turn internal
180
AUI Port
Internal MENDEC Clock Timing
Parameter
Symbol
DI carrier sense off.
CI carrier sense off.
tDOETD
tPWODI
tPWOCI
tPWKDI
tPWKCI
tDORM
tDOTR
tDOTF
AMD
tX1H
tX1R
tX1L
tX1F
tX1
Parameter Description
DO+, DO– Rise Time (10% to 90%)
DO+, DO– Fall Time (10% to 90%)
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
P R E L I M I N A R Y
Am79C970A
Test Conditions
|VIN| > |VASQ| (Note 1)
|VIN| > |VASQ| (Note 2)
|VIN| > |VASQ| (Note 3)
|VIN| > |VASQ| (Note 4)
VIN = External Clock
VIN = External Clock
VIN = External Clock
VIN = External Clock
VIN = External Clock
49.995
Min
200
136
2.5
2.5
15
10
90
20
20
50.001
Max
375
200
160
5.0
5.0
1.0
45
26
5
5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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