User guide

C M M - 52259 J U N E 1 1 , 2 0 1 0
U S E R G U I D E
13
Fast Ethernet Controller (FEC)
The MCF52259 internal Media Access Controller (MAC) supports 10/100 Mbps Ethernet /
IEEE802.3 network connections. User application must configure the MAC for Media Inde-
pendent Interface (MII) operation before use. The MAC supports both full- and half-duplex op-
eration.
UART
The CMM-52259 applies 3 RS-232, UART channels.
RS-232
A RS-232 physical layer transceiver (PHY) is applied on UART0 to support serial communica-
tions. UART1 and UART2 signals are available on the MCU_PORT connector for use with off-
board PHY’s. A standard “Berg” style pin header and an IDC to DB-9 adapter cable complete
the UART0 connections. The on-board PHY is enabled while power is applied to the board.
Figure 6 below shows signal connections on UART0.
Figure 6: UART0 Signal Connections
MCU Port Signal
PHY Signals
COM
CONECTOR
COMMENTS
J5-1
7, 2
UTXD0/PUA0
TXD
J5-3
pull-up
URXD0/PUA1
RXD
J5-5
J5-7
1, 2
GND
J5-9
J5-2
1, 7
UCTS0*/PUA3
CTS
J5-4
URTS0*/PUA2
RTS
J5-6
pull-down
NC
J5-8
NC
J5-10
NOTE:
The COM (J5) connector is placed too close to the BDM_PORT connector. To
use both the COM cable and the BDM cable, first install the COM cable then
install the BDM cable.
CAN
The CMM-52259 applies a high-speed controller area network (CAN) port. The Phillips,
PCA82C250 physical layer transceiver (PHY) provides the interface between the MCF52259
CAN controller port and the physical CAN bus. The PHY connects to the differential CAN bus