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AM79C970A датащи(PDF) 179 Page - Advanced Micro Devices

номер детали AM79C970A
подробное описание детали  PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
PDF  219 Pages
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производитель  AMD [Advanced Micro Devices]
домашняя страница  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C970A датащи(HTML) 179 Page - Advanced Micro Devices

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P R E L I M I N A R Y
AMD
179
Am79C970A
SWITCHING CHARACTERISTICS: 10BASE-T Interface
Parameter
Symbol
Parameter Description
Test Conditions
Min
Max
Unit
Transmit Timing
tTETD
Transmit Start of Idle
250
350
ns
tTR
Transmitter Rise Time
(10% to 90%)
5.5
ns
tTF
Transmitter Fall Time
(90% to 10%)
5.5
ns
tTM
Transmitter Rise and Fall Time Mismatch
(tTM = |tTR – tTF|)
1
ns
tXMTON
XMT Asserted Delay
100
ns
tXMTOFF
XMT Deasserted Delay
20
62
ms
tPERLP
Idle Signal Period
8
24
ms
tPWLP
Idle Link Pulse Width
(Note 1)
75
120
ns
tPWPLP
Predistortion Idle Link Pulse Width
(Note 1)
45
55
ns
tJA
Transmit Jabber Activation Time
20
150
ms
tJR
Transmit Jabber Reset Time
250
750
ms
tJREC
Transmit Jabber Recovery Time
1.0
µs
(Minimum time gap between
transmitted frames to prevent
jabber activation)
Receiving Timing
tPWNRD
RXD Pulse Width Not to Turn Off
VIN > VTHS (min)
136
ns
Internal Carrier Sense
tPWROFF
RXD Pulse Width To Turn Off
VIN > VTHS (min)
200
ns
tRETD
Receive Start of Idle
200
ns
tRCVON
RCV Asserted Delay
TRON
TRON
ns
– 50
+ 100
tRCVON
RCV Deasserted Delay
20
62
ms
Collision Detection and SQE Test
tCOLON
COL Asserted Delay
750
900
ns
tCOLOFF
COL Deasserted Delay
20
62
ms
Note:
1. Not tested; parameter guaranteed by characterization.



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