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10006024-04 Katana
®
752i User’s Manual
10-1
Section 10
Ethernet Interfaces
The Katana
®
752i supports four 10/100/1000BaseT Ethernet ports. The MV64460 system
controller provides three Ethernet Media Access Control (MAC) units, and an Intel 82544EI
Ethernet controller device provides direct access from the local PCI bus. Three Broadcom
BCM5461S transceivers and an integrated PHY in the 82544EI provide interfaces for the
10/100/1000BaseT Ethernet ports. Two of these ports route to the Katana
®
752i front
panel, and two route to the J3 CompactPCI packet-switched backplane (cPSB) connector.
The Katana
®
752i also provides optional Ethernet connectivity for each PTMC site, using
two RMII PHY devices that route to the J5 CompactPCI (cPCI) backplane connector.
ETHERNET ADDRESS
The Ethernet address for your board is a unique identifier on a network and must not be
altered. The address consists of 48 bits (Medium Access Control—MAC[47:0]) divided into
two equal parts. The upper 24 bits define a unique identifier that has been assigned to
Emerson Network Power, Embedded Computing by IEEE. The lower 24 bits are defined by
Emerson for identification of each of our products.
The Ethernet address for the Katana
®
752i is a binary number referenced as 12 hexadecimal
digits separated into pairs, with each pair representing eight bits. The address assigned to
the Katana
®
752i has the following form:
00 80 F9 6x yy zz
00 80 F9 is Emerson’s identifier. The last three bytes of the Ethernet address comprise the
data for the Ethernet addresses in non-volatile memory. 6 is defined by Emerson and is spe-
cific to the Katana
®
752i. x, yy, and zz are calculated.
For the purpose of this calculation, the entire MAC address can be thought of as a 48-bit
register, as shown in Register Map 10-1.
Register 10-1: MAC Calculation
To determine the last 17 bits of the MAC address (x, yy, and zz):
1 Subtract 1000 from the decimal serial number, convert it to hex, and place the 14-bit result
in MAC[16:3].
2 Set the remaining three bits, MAC[2:0], according to the following list:
000 = CPSB_1 (MAC address #1)
MAC[47:0]
00 80 F9 6x yy zz
0000 0000 1000 0000 1111 1001 0110 110x yyyy yyyy zzzz zzzz
47:24
Fixed
23:17
Fixed
16:3
Calculated
2:0
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