Table 3.33 Actiphy Control, Address 20E1 (0X14) - Renesas R-IN32M4-CL2 User Manual
Gigabit ethernet phy edition
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R-IN32M4-CL2 User's Manual Gigabit Ethernet PHY Edition
Table 3.33 ActiPHY Control, Address 20E1 (0x14)
Bit
Name
7:6
Media mode status
5
Enable 10BASE-T no preamble
mode
4
Enable link speed autodownshift
feature
3:2
Link speed auto downshift control
1:0
Reserved
R18UZ0043EJ0100
Mar 4, 2016
Access
RO
00: No media selected
01: Copper media selected
10: Reserved
11: Reserved
R/W
Sticky bit.
1: 10BASE-T will assert RX_DV indication when data is
presented to the receiver even without a preamble preceding
it
R/W
Sticky bit.
1: Enable auto link speed downshift from 1000BASE-T
R/W
Sticky bit.
00: Downshift after 2 failed 1000BASE-T autonegotiation
attempts
01: Downshift after 3 failed 1000BASE-T autonegotiation
attempts
10: Downshift after 4 failed 1000BASE-T autonegotiation
attempts
11: Downshift after 5 failed 1000BASE-T autonegotiation
attempts
RO
Reserved
Description
3. Registers
(2/2)
Default
00
0
0
01
00
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