Datasheet

High-Performance 16-bit Non-PCI 10/100 Ethernet Controller with Variable Voltage I/O
Datasheet
Revision 2.9 (03-01-12) 76 SMSC LAN9221/LAN9221i
DATASHEET
The figure below shows the signal names at the RJ-45 connector, The mapping of these signals to the pins on
the LAN9221/LAN9221i is as follows:
TXP = TPO+
TXN = TPO-
RXP = TPI+
RXN = TPI-
Figure 4.3 Direct Cable Connection vs. Cross-over Cable Connection