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LAN8740Ai-EN 데이터시트(PDF) 52 Page - Microchip Technology

부품명 LAN8740Ai-EN
상세설명  Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  136 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8740Ai-EN 데이터시트(HTML) 52 Page - Microchip Technology

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LAN8740A/LAN8740Ai
DS00001987A-page 52
2013-2015 Microchip Technology Inc.
3.8.12.3
Connector Loopback
The device maintains reliable transmission over very short cables and can be tested in a connector loopback as shown
in Figure 3-16. An RJ45 loopback cable can be used to route the transmit signals from the output of the transformer
back to the receiver inputs. The loopback works at both 10 and 100 Mbps.
FIGURE 3-16:
CONNECTOR LOOPBACK BLOCK DIAGRAM
Microchip
Ethernet Transceiver
10/100
Ethernet
MAC
XFMR
Digital
RXD
TXD
Analog
RX
TX
1
2
3
4
5
6
7
8
RJ45 Loopback Cable.
Created by connecting pin 1 to pin 3
and connecting pin 2 to pin 6.



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