Datasheet

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)