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LAN8742Ai-CZ データシート(PDF) 51 Page - Microchip Technology

部品番号 LAN8742Ai-CZ
部品情報  Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  124 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8742Ai-CZ データシート(HTML) 51 Page - Microchip Technology

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 2013-2015 Microchip Technology Inc.
DS00001989A-page 51
LAN8742A/LAN8742Ai
3.8.10.3
Connector Loopback
The device maintains reliable transmission over very short cables and can be tested in a connector loopback as shown
in Figure 3-19. 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 3-19:
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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