NAT-MCH BASE-Module– Technical Reference Manual
Version 2.10
© N.A.T. GmbH
16
PHYS-Module
. The
NAT-MCH HUB-Module
can also be accessed by the
ColdFire via I²C bus.
To interface the
NAT-MCH HUB-Module
, a SPI interface is also available. The
SPI interface of the ColdFire is used for this purpose.
To have a high-speed interface to the
NAT-MCH HUB-Module
a 1000Base-X
interface is connected used. At the moment this interface is only supported by the
NAT-MCH XAUI-Module
.
3.6
I
2
C Devices
There are three I
2
C Devices on the
NAT-MCH BASE-Module
, which are connected to the
MCF54452 via I
2
C bus
An EEPROM (24C08) used for storage of board-specific information (address 0x50)
Two temperature sensors (LM75), which sense the board temperature near CPU
and near FPGA (addresses 0x9C and 0x9E)
3.7
Ethernet Switch
The Broadcom BCM5396 Gigabit Ethernet Switch provides a layer 2, non-blocking, low-
latency Gigabit Ethernet switch, supporting VPN as well as a port based rate control. The
BCM5396 supports Fabric A switching according to MicroTCA.0 R1.0 and PICMG SFP.1
R1.0, serving up to 12 AMCs as well as the update channel from the second
NAT-MCH
in
redundant environments. Also supported are two uplink ports at the front panel of the
NAT-MCH BASE-Module
in order to interconnect to other carriers, shelves or systems.
Refer to section 3.4.1 for the Uplink ports.
The configuration register of the BMC5396 can be accessed through the MCF54452’s PHY
message channel interface.
For frame management the BMC5396 is connected to the MCF54452’s TSEC0 through the
MII interface.
