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LAN8740 Datasheet(PDF) 110 Page - Microchip Technology

Part # LAN8740
Description  Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR짰 Technology
PDF  136 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8740 Datasheet(HTML) 110 Page - Microchip Technology

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LAN8740A/LAN8740Ai
DS00001987A-page 110
2013-2015 Microchip Technology Inc.
4.3.25
TDR SHORT/OPEN THRESHOLD REGISTER
Note 1: Software reset places the default values of this register into an indeterminate state. For proper operation of
the TDR, the TDR Short Low Threshold and TDR Open High Threshold must be set to 5’h09 and 5’h12,
respectively.
Index (In Decimal):
30.12
Size:
16 bits
Bits
Description
Type
Default
15:10
RESERVED
RO
-
9:5
TDR Short Low Threshold
Sets the lower threshold to detect short cable.
R/W
5’h09
(see Note 1)
4:0
TDR Open High Threshold
Sets the upper threshold to detect open cable.
R/W
5’h12
(see Note 1)



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