LAN8740A Datasheet, PDF (110/136 Pages) Microchip Technology – Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology

LAN8740A/LAN8740Ai
4.3.25 TDR SHORT/OPEN THRESHOLD REGISTER
Index (In Decimal): 30.12
Size:
16 bits
Bits
15:10
9:5
4:0
Description
RESERVED
TDR Short Low Threshold
Sets the lower threshold to detect short cable.
TDR Open High Threshold
Sets the upper threshold to detect open cable.
Type
RO
R/W
R/W
Default
-
5’h09
(see Note 1)
5’h12
(see Note 1)
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.
DS00001987A-page 110
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