Pin header connector X66 located next to the USB host connector
provides the UART1
signals of the AM335x at RS-232 level. The serial interface is intended to be used as data terminal
equipment (DTE) and allows for a 5-wire connection including the signals RTS and CTS for
hardware flow control. Below table shows the signal mapping of the RS-232 level signals at connector
X66.
Pin
Signal
Pin
Signal
1
NC
2
NC
3
UART1_RXD_RS232
4
UART1_RTS_RS232
5
UART1_TXD_RS232
6
UART1_CTS_RS232
7
NC
8
NC
9
GND
10
NC
Pin Assignment of RS-232 Connector X66
An adapter cable is included in the phyBOARD-Wega-Am335x Kit to facilitate the use of the
UART1 interface. The following figure shows the signal mapping of the adapter.
5.5 Ethernet Connectivity (X16 andX17)
The Ethernet interfaces of the phyBOARD-Wega are accessible at two RJ45 connectors (X16 and
X17) on the board.
Ethernet Interfaces at Connectors X16 and X17
Both Ethernet interfaces are configured as 10/100Base-T networks. The LEDs for LINK (green)
and SPEED (yellow) indication are integrated in the connector. Both LAN8710AI Ethernet transceivers
support HP Auto-MDIX technology, eliminating the need for the consideration of a direct connect
LAN cable, or a cross-over path cable. They detect the TX and RX pins of the connected device and
automatically configure the PHY TX and RX pins accordingly.
© PHYTEC Embedded Pvt. Ltd. 2014 17
