Intel MPCMM0002 manual Memory, Ethernet, Serial Port UARTs

Module Components—MPCMM0002 CMM

4.3Memory

The CMM has a SODIMM (Small Outline Dual Inline Memory Module) socket on board. The SODIMM is populated with a 128 MByte unbuffered memory module.

The CMM also has four separate 16 MByte flash modules. These are Intel® E28F128 flash memory modules. Each memory module has multiple lockable regions within the flash.

4.4Ethernet

The CMM has two Intel® 82551QM Fast Ethernet Multifunction Controllers with integrated media access controllers and physical interfaces. The output from each of these chips is passed to a dedicated multiplexing device (mux), the SN74CBT16124. Each mux can be individually controlled to send the Ethernet signals to one of three destinations: the front panel, an optional RTM connection, or a separate backplane connection. Separate magnetics (six total) provide magnetic coupling for the 10BASE-T or 100BASE-TX signaling commonly associated with 10/100 MByte/s Ethernet.

In Figure 3, “CMM Top View Layout” on page 16, the four magnetics for the RTM and backplane connections are at the bottom of the board. The two magnetics for the front panel are integrated into the front panel RJ-45 connectors.

4.5Serial Port UARTs

The UART (Universal Asynchronous Receiver/Transmitter) controller on the CMM board is a Texas Instruments* TL16C752B dual UART chip. The first serial port is connected to an RJ-45 connector on the front panel; the second serial port is passed to the rear of the card for an optional RTM connection. Full modem hardware signals are passed through to the RTM.

The UART driver provides 15 kV of ESD protection (8 kV contact, 15 kV air discharge).

	Intel NetStructure® MPCMM0002 Chassis Management Module
July 2007	Hardware TPS
Order Number: 309247-004US	19