AL103 Revision 1.0
Reset
Parallel Port
AL103
EECLK
EEDIO
EEPROM
Figure 8
EEPROM Parallel Port
3.14.6 EEPROM Map
Table 17 shows the EEPROM address map cross-referenced to the register/bit set of the AL103.
Addresses 00 through 6D are for configuring the device. They are downloaded by the AL103 after
reset or power up. Since the AL103 registers are 16-bit wide, it takes two EEPROM addresses for
each AL103 register. Even numbered EEPROM addresses corresponds to the upper byte of the
AL103 registers while the odd numbered EEPROM addresses corresponds to the lower byte of the
AL103 registers.
Address 06 and 07 should be programmed as 0000 0001 and 0001 0100. The address 6F indicates
the last address entry. If no static address is used in the switch, the address 6F should be
programmed. Addresses 70 to FF are used for programming the static address entry.
The following format is an example of Static Entry 1, Address 70-7F.
Table 17: Static Address Entry Format for EEPROM
BIT
EEPROM
ADDRESS
7
6
5
4
3
2
1
0
70
71
72
73
74
75
76
77
Reserved (Must be all zero)
Reserved Port ID 000XXX or Trunk ID 100YYY
MAC Address [47:40]
MAC Address [39:32]
MAC Address[31:24]
MAC Address[23:16]
MAC Address[15:8]
MAC Address[7:0]
Note: XXX represents port ID and YYY represents Trunk ID.
9/00
Reference Only / Allayer Communications
32
ABC [ ABC Taiwan Electronics Corp ]
