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AM79C971VCW bảng dữ liệu(PDF) 206 Page - Advanced Micro Devices

tên linh kiện AM79C971VCW
Giải thích chi tiết về linh kiện  PCnet??FAST Single-Chip Full-Duplex 10/100 Mbps Ethernet Controller for PCI Local Bus
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nhà sản xuất  AMD [Advanced Micro Devices]
Trang chủ  http://www.amd.com
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Am79C971
SWITCHING CHARACTERISTICS: 10BASE-T INTERFACE
Note:
Not tested, parameter guaranteed by characterization.
Parameter
Symbol
Parameter Name
Test Condition
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
(See note below)
75
120
ns
tPWPLP
Predistortion Idle Link Pulse Width
(See note below)
45
55
ns
tJA
Transmit jabber activation time
20
150
ms
tJR
Transmit jabber reset time
250
750
ms
tJREC
Transmit jabber recovery time
(minimum time gap between
transmitted frames to prevent jabber
activation)
1.0
µs
Receiving Timing
tPWNRD
RXD pulse width not to turn off
internal carrier sense
VIN > VTHS(min)
136
ns
tPWROFF
RXD pulse width to turn off
VIN > VTHS(min)
200
ns
tRETD
Receive Start of Idle
200
ns
tRCVON
RCV asserted delay
TRON - 50
TRON +
100
ns
tRCVOFF
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



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