Register 25: Ethernet PHY Management Register 19 – Transceiver Control
(MR19), address 0x13
This register enables software to set the gain of the transmit output to compensate for transformer
loss.
Ethernet PHY Management Register 19 – Transceiver Control (MR19)
Base 0x4004.8000
Address 0x13
Type R/W, reset 0x4000
0123456789101112131415
reservedTXO
ROROROROROROROROROROROROROROR/WR/WType
0000000000000010Reset
DescriptionResetTypeNameBit/Field
Transmit Amplitude Selection
The TXO field sets the transmit output amplitude to account for transmit
transformer insertion loss.
DescriptionValue
Gain set for 0.0dB of insertion loss0x0
Gain set for 0.4dB of insertion loss0x1
Gain set for 0.8dB of insertion loss0x2
Gain set for 1.2dB of insertion loss0x3
0x1R/WTXO15:14
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0x000ROreserved13:0
June 22, 2010456
Texas Instruments-Production Data
Ethernet Controller