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LAN8742Ai-CZ 데이터시트(PDF) 33 Page - Microchip Technology

부품명 LAN8742Ai-CZ
상세설명  Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  124 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8742Ai-CZ 데이터시트(HTML) 33 Page - Microchip Technology

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 2013-2015 Microchip Technology Inc.
DS00001989A-page 33
LAN8742A/LAN8742Ai
3.7.4.1
REF_CLK In Mode
In REF_CLK In Mode, the 50 MHz REF_CLK is driven on the XTAL1/CLKIN pin. A 50 MHz source for REF_CLK must
be available external to the device when using this mode. The clock is driven to both the MAC and PHY as shown in
Figure 3-7.
FIGURE 3-7:
EXTERNAL 50 MHZ CLOCK SOURCES THE REF_CLK
LAN8742A/LAN8742Ai
10/100 PHY
24-VQFN
RMII
TXP
TXN
Mag
RJ45
RXP
RXN
XTAL1/CLKIN
XTAL2
TXD[1:0]
2
RXD[1:0]
CRS_DV
2
RMII
LED[2:1]
2
Interface
MDIO
MDC
nINT
nRST
TXEN
MAC
Accepts external
50MHz clock
50MHz
Reference
Clock
All RMII signals are
synchronous to the supplied
clock
REF_CLK
RXER



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