Rainbow Electronics W90N740 User Manual
Page 129
W90N740
Publication Release Date: November 26, 2004
- 125 -
Revision A4
MAC Address Registers (EXMACM, EXMACL, INMACM, INMACL, LSMACxM, LSMACxL,
RSMACxM, RSMACxL)
The MAC address registers are to store the MAC address of each EMC port. When the NATA is enabled
and corresponding entry is hit, the MAC address translation from one port to another port must be done
by hardwire, instead of by software. Thus the user must set the MAC address of each port for NAT to
translate.
{EXMACM, EXMACL (INMACM, INMACL)}: MAC address (6 bytes), with 2 bytes in EXMACL
(INMACL) and 4 bytes in EXMACM (INMACM)
{LSMACxM, LSMACxL (RSMACxM, RSMACxL)}: MAC address (6 bytes), with 2 bytes in LSMACxL
(RSMACxL) and 4 bytes in LSMACxM
(RSMACxM)
For example, if the External MAC address is desired to store 12-34-56-78-90-13, then the content of
EXMACM is 12-34-56-78, and the content of EXMACL is 90-13-00-00.
7.6.2.7 EXMACM, INMACM, LSMACxM, RSMACxM
31
30
29
28
27
26
25
24
Address Byte 6 (Most Significant Byte)
23
22
21
20
19
18
17
16
Address Byte 5
15
14
13
12
11
10
9
8
Address Byte 4
7
6
5
4
3
2
1
0
Address Byte 3
EXMACL, INMACL, LSMACxL, RSMACxL
31
30
29
28
27
26
25
24
Destination Address Byte 2
23
22
21
20
19
18
17
16
Destination Address Byte 1
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved