lan9211 Standard Microsystems Corp., lan9211 Datasheet - Page 109
lan9211
Manufacturer Part Number
lan9211
Description
Lan9211 High-performance Small Form Factor Single-chip Ethernet Controller With Hp Auto-mdix Support
Manufacturer
Standard Microsystems Corp.
Datasheet
1.LAN9211.pdf
(146 pages)
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High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support
Datasheet
SMSC LAN9211
5.4.3
BITS
31-0
EEPROM ADDRESS
Physical Address [31:0]. This field contains the lower 32 bits (31:0) of the Physical Address of the
LAN9211 device. The content of this field is undefined until loaded from the EEPROM at power-on.
The host can update the contents of this field after the initialization process has completed.
ADDRL—MAC Address Low Register
The MAC Address Low register contains the lower 32 bits of the physical address of the MAC. The
contents of this register are optionally loaded from the EEPROM at power-on through the EEPROM
Controller if a programmed EEPROM is detected. The least significant byte of this register (bits [7:0])
is loaded from address 0x01 of the EEPROM. The most significant byte of this register is loaded from
address 0x04 of the EEPROM. Please refer to
Table 5.7
reception of the Ethernet physical address. Also shown is the correlation between the EEPROM
addresses and ADDRL and ADDRH registers.
As an example, if the desired Ethernet physical address is 12-34-56-78-9A-BC, the ADDRL and
ADDRH registers would be programmed as shown in
load this configuration from the EEPROM are also shown.
Note: By convention, the left most byte of the Ethernet address (in this example 0x12) is the most
0x01
0x02
0x03
0x04
0x05
0x06
Offset:
Default Value:
significant byte and is transmitted/received first.
below illustrates the byte ordering of the ADDRL and ADDRH registers with respect to the
Figure 5.2 Example ADDRL, ADDRH and EEPROM Setup
Table 5.7 ADDRL, ADDRH and EEPROM Byte Ordering
31
31
0x78
xx
24
24
23
23
0x56
xx
ADDRH
ADDRL
16
16
3
FFFFFFFFh
15
15
ADDRL[23:16]
ADDRL[31:24]
ADDRH[15:8]
ADDRL[15:8]
ADDRH[7:0]
ADDRL[7:0]
0xBC
0x34
DATASHEET
ADDRN
8
8
109
DESCRIPTION
7
7
0x9A
0x12
Section 4.6
0
Attribute:
Size:
0
Figure
for more information on the EEPROM.
5.2. The values required to automatically
0x06
0x05
0x04
0x03
0x02
0x01
0x00
ORDER OF RECEPTION ON
EEPROM
R/W
32 bits
0xBC
0x9A
0xA5
0x78
0x56
0x34
0x12
ETHERNET
2
3
1
4
5
6
nd
rd
th
th
th
st
Revision 2.3 (08-06-08)
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