UG-1673
Rev. 0 | Page 12 of 29
a prompt describing the function at the bottom of the linking
control box (see Figure 18).
22009-
018
Figure 18.
Link Properties
Tab
Speed Mode
For the selected device, advertised speed or forced speed can be
chosen. The speed selection prepopulates the remaining user
controls for the
Link Properties
tab with the following:
•
Advertised
: subset of controls available in advertised
mode. The controls include the following:
•
Auto-Negotiation Advertised Speeds
: shows the
checkbox availability of all autonegotiated advertised
speeds available. Select and clear the checkboxes as
required. All speed options are available in this
section. The default advertised reflects the hardware
configuration pins.
•
EEE Advertisement
: use the checkboxes to advertise
the EEE as a speed option for 1000BASE-T and
100BASE-TX.
•
Downspeed
: use the checkbox to enable downspeed,
which allows the PHY to change to a lower speed after
a number of attempts to bring up a link at the highest
advertised speed.
•
Downspeed Retries
: sets the number of times the PHY
attempts to bring up a link. The default is four attempts.
•
MDIX
: use the dropdown menu to choose
Auto
MDIX
,
FixedMDI
, or
FixedMDIX
(
FixedMDI
and
FixedMDIX
not shown in Figure 18).
•
Energy Detect PowerDown Mode
: use the dropdown
menu to choose
Disabled
,
Enabled
, or
EnabledWithPeriodicPulseTx.
•
Forced
: subset of controls available in forced mode. The
controls include the following:
•
Forced Speeds
: use the dropdown menu to choose the
required speed.
•
MDIX
: use the dropdown menu to choose
Auto,
FixedMDI
, or
FixedMDIX
.
•
Energy Detect Powerdown Mode
: use the dropdown
menu to choose
Disabled
,
Enabled
, or
EnabledWithPeriodicPulseTx
.
REGISTER ACCESS TAB
The
Browse
tab within the
Register Access
tab allows the user
to review the bank of registers and edit the register fields or bit
fields as required (see Figure 19).
22009-
019
Figure 19.
Register Access
Tab Full Register Map
The
Manual
tab within the
Register Access
tab allows the user
to perform basic reads from and writes to individual
registers (see Figure 20).
22009-
020
Figure 20.
Register Access
Tab