Ethernet Interfaces; Asynchronous Serial Ports - SMART Embedded Computing MVME3100 Installation And Use Manual

The Maxim DS1375 RTC implemented on the MVME3100 provides an alarm interrupt
routed to the MPC8540 programmable interrupt controller (PIC). A Maxim DS32KHz
temperature controlled crystal oscillator provides the RTC reference. A battery backup
circuit for the RTC is provided on board.
The Maxim DS1621 digital temperature sensor provides a measure of the temperature of
the board.
2
The I C interface is also routed to the on-board SODIMM socket. This allows the serial
presence detect (SPD) in the serial EEPROM, which is located on the memory module, to
be read and used to configure the memory controller accordingly. Similarly, the I2C
interface is routed to the P2 connector for access to the serial EEPROM located on the
RTM. The device address for the RTM serial EERPOM is user-selectable using
configuration switches on the RTM.
Refer to the MVME3100 Single Board Computer Programmer's Reference Guide in
Appendix B, Related
4.8

Ethernet Interfaces

The MVME3100 provides one 10/100 and two 10/100/1000 Mb/s full duplex Ethernet
interfaces using the MPC8540 Fast Ethernet Controller (FEC) and two Triple Speed
Ethernet Controllers (TSEC). A Broadcom BCM5461S PHY is used for each TSEC
interface, and each TSEC interface and PHY is configured to operate in GMII mode. One
Gigabit Ethernet interface is routed to a front-panel RJ-45 connector with integrated LEDs
for speed and activity indication. The other Gigabit Ethernet interface is routed to P2 for rear
I/O.
A Broadcom BCM5221 PHY is used for the FEC interface. The Fast Ethernet interface is
routed to P2 for rear I/O. Isolation transformers are provided on-board for each interface.
The assigned PHY addresses for the MPC8540 MII management (MIIM) interface can be
found in the MVME3100 Single Board Computer Programmer's Reference Guide, listed in
Appendix B, Related
Each Ethernet interface is assigned an Ethernet Station Address. The address is unique
for each device. The Ethernet Station Addresses are displayed on labels attached to the
PMC front-panel keep-out area.
4.9

Asynchronous Serial Ports

The MVME3100 board contains one front-access asynchronous serial port interface using
serial port 0 from the MPC8540 dual UART (DUART) device. This serial port is routed to
the RJ-45 front-panel connector.
MVME3100 Single Board Computer Installation and Use (6806800M28H)
Documentation, for more information.
Documentation.
Ethernet Interfaces
71