
LAN9303 Evaluation Board User Manual
SMSC LAN9303
USER MANUAL
Revision 1.0 (05-28-09)
9
2.5.2
Port 0 Mode
Note 2.8
There are no default setting for this switch. Customers must choose the appropriate MII
mode as dictated by their application.
Note 2.9
The P0_MODE[2:0] settings are defined in
Table 2.11 Port 0 Mode Switches
SWITCH
DESCRIPTION
FUNCTION
S2-1
8-position DIP switch, position 1
Sets P0_MODE0 low when closed (on).
Otherwise, the signal is pulled-up internally.
(
)
S2-2
8-position DIP switch, position 2
Sets P0_MODE1 low when closed (on).
Otherwise, the signal is pulled-up internally.
(
)
S2-3
8-position DIP switch, position 3
Sets P0_MODE2 low when closed (on).
Otherwise, the signal is pulled-up internally.
(
)
S2-4
8-position DIP switch, position 4
Sets P0_MODE3 low when closed (on).
Otherwise, the signal is pulled-up internally.
This switch selects the duplex polarity strap
default for Port 0 as follows:
If the strap value is “0”, a “0” on P0_DUPLEX
indicates full duplex, while a “1” indicates
half-duplex.
If the strap value is “1”, a “1” on P0_DUPLEX
indicates full duplex, while a “0” indicates
half-duplex.
The default setting is open.
S2-[5:8]
8-position DIP switch, positions 5-8
Note:
These switches are not used and
should be ignored.
Table 2.12 P0_MODE[2:0] Settings
S2-3
S2-2
S2-1
PORT 0 MODE SETTINGS
0
0
0
MII MAC Mode
0
0
1
MII PHY Mode
0
1
0
MII PHY Mode / 200Mbps / 12mA clock output
0
1
1
MII PHY Mode / 200Mbps / 16mA clock output
1
0
0
RMII PHY Mode / 12mA clock output
1
0
1
RMII PHY Mode / 16mA clock output
1
1
0
RMII PHY Mode / clock is input
1
1
1
RESERVED