Atmel Evaluation Board AT91SAM9XE-EK - Manual (Page 22)

AT91SAM9XE-EK Evaluation Board User Guide 4-3
6311A–ATARM–04-Feb-08
4.5 Ethernet
RMII is the factory default mode.
To evaluate the MII mode, the user has to unsolder R49, R50, R127, close S7, S8 and populate R119 to
R126, C88, C89, Y4.
4.6 Miscellaneous
Refer to the TOP level schematic for the PIO usage.
Table 4-5. Miscellaneous
Designation Default Setting Feature
R82 Soldered USB DEVICE: Enables the use of the USBCNX signal
R72
R73
Soldered
Soldered
DBGU COM Port: Enables the use of DTXD output signal.
Enables the use of DRXD input.
RS232 COM Port 0: Enable the use of output signals.
R94
R95
R96
Soldered
RTS0
TXD0
DTR0
RS232 COM Port 0: Enable the use of input signals.
R98
R101
R103
R104
R105
R106
Soldered
DCD0
DSR0
RXD0
CTS0
RI0
Enables all MAX3241E outputs buffer
RS232 COM Port 1: Enables the use of output signals.
R83
R85
Soldered
TXD1
RTS1
RS232 COM Port 1: Enables the use of input signals.
R86
R88
Soldered
RXD1
CTS1
TP1 N.A GND Test point
TP2 N.A GND Test point.
TP3 N.A GND Test point.
TP4 N.A GND Test point.
TP5 N.A Reserved: do not use
TP6 N.A Reserved: do not use