Emerson PMPPC7448 사용자 설명서

 Ethernet Address

PmPPC7448 User’s Manual

The Ethernet address for your board is a unique identifier on a network and must not be 
altered. The address consists of 48 (MAC[47:0]) bits divided into two equal parts. The upper 
24 bits define a unique identifier that has been assigned to Emerson Network Power by 
IEEE. The lower 24 bits are defined by Emerson for identification of each of our products.

The Ethernet address for the PmPPC7448 is a binary number referenced as 12 hexadecimal 
digits separated into pairs, with each pair representing eight bits. The address assigned to 
the PmPPC7448 has the following form:

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 (NVRAM). The PmPPC7448 has 
been assigned the Ethernet address range 00:80:F9:81:00:00 to 00:80:F9:83:FF:FF. The for-
mat is shown in 

.

Table 6-1:

The last pair of hex numbers correspond to the following formula: n — 1000, where n is the 
unique serial number assigned to each board. For example, if the serial number of a 
PmPPC7448 is 2867, the calculated value is 1867 (74B

16

). Therefore, the board’s port 1 

Ethernet address is 00:80:F9:82:07:4B.

The Micrel KSZ8721CL 10/100 PHY (port 2) signals are routed to the P1 connector. P1 is a 
mini-USB connector available at the front panel. See 

 below. The Ethernet cable 

(Emerson part number C0007666-00) is shown in 

.

Byte 5

15:0

LSB of (serial number -1000)

—

Byte 4

MSB of (serial number -1000)

—

Byte 3

23:16

Port 2 (front panel debug port, portdbg)

83

Port 1 (portb)

82

Port 0 (porta)

81

Byte 2

47:24

Assigned to Emerson by IEEE

F9

Byte 1

80

Byte 0

00