
6.2.4 Register21: EEPROM Byte10 and 11 Register 
 Reg.bit 
 Name 
 Description 
 21.15 
Reserved 
21.14~21.12 
P3VLANIndex[2] 
P3VLANIndex[1] 
P3VLANIndex[0] 
(VLAN D). 
 21.11 
Reserved 
 21.10~21.8 
P2VLANIndex[2] 
P2VLANIndex[1] 
P2VLANIndex[0] 
(VLAN C). 
 21.7 
Reserved 
 21.6~21.4 
P1VLANIndex[2] 
P1VLANIndex[1] 
P1VLANIndex[0] 
VLAN (VLAN B). 
 21.3 
Reserved 
 21.2~ 21.0 
P0VLANIndex[2] 
P0VLANIndex[1] 
P0VLANIndex[0] 
example, P0VLANIndex[2:0]=0b000 means port 0 use the first 
VLAN (VLAN A).  
RTL8305SB 
2002/04/09 
26
Rev.1.0
 Mode 
 RO 
 RW 
Default 
1 
011 
 Port 3 VLAN Index: 
 P3VLANIndex[2:0]=0b011 means port 3 use the forth VLAN 
 RO 
 RW 
1 
 Port 2 VLAN Index: 
 P2VLANIndex[2:0]=0b010 means port 2 use the third VLAN 
010 
 RO 
 RW 
1 
 Port 1 VLAN Index: 
 P1VLANIndex[2:0]=0b001 means port 1 use the second 
001 
 RO 
 RW 
1 
 Port 0 VLAN Index: 
 P0VLANIndex[2:0] are use to assign the VLAN of port 0. For 
 P0VLANIndex[0] is bit0, P0VLANIndex[1] is bit1, 
P0VLANIndex[2] is bit2. 
000 
6.2.5 Register22: EEPROM Byte12 and 13 Register 
 Reg.bit 
 Name 
 Description 
 22.15 
 22.14 
P3IRTag[0] 
 11: Do not insert/remove Tag from Output High and Low Queue of Port3 
 10: Insert Tag from Output High and Low Queue of Port3 
 01: Insert Tag from Output High Queue only of Port3 
 00: Remove Tag from Output High and Low Queue of Port3 
 22.13 
 22.12 
P2IRTag[0] 
 11: Do not insert/remove Tag from Output High and Low Queue of Port2 
 10: Insert Tag from Output High and Low Queue of Port2 
 01: Insert Tag from Output High Queue only of Port2 
 00: Remove Tag from Output High and Low Queue of Port2 
 22.11 
 22.10 
P1IRTag[0] 
 11: Do not insert/remove Tag from Output High and Low Queue of Port1 
 10: Insert Tag from Output High and Low Queue of Port1 
 01: Insert Tag from Output High Queue only of Port1 
 00: Remove Tag from Output High and Low Queue of Port1 
 22.9 
 22.8 
P0IRTag[0] 
 11: Do not insert/remove Tag from Output High and Low Queue of Port0 
 10: Insert Tag from Output High and Low Queue of Port0 
 01: Insert Tag from Output High Queue only of Port0 
 00: Remove Tag from Output High and Low Queue of Port0 
 22.7 
 22.6 
P4IRTag[0] 
 11: Do not insert/remove Tag from Output High and Low Queue of Port4 
 10: Insert Tag from Output High and Low Queue of Port4 
 01: Insert Tag from Output High Queue only of Port4 
 00: Remove Tag from Output High and Low Queue of Port4 
 22.5~11.3 
Reserved 
 22.2~ 22.0 
P4VLANIndex[2] 
P4VLANIndex[1] 
P4VLANIndex[0] 
(VLAN E). 
 Mode 
 RW 
Default 
11 
P3IRTag[1] 
 Insert/Remove Priority Tag of Port3. 
P2IRTag[1] 
 Insert/Remove Priority Tag of Port2.  
 RW 
11 
P1IRTag[1] 
 Insert/Remove Priority Tag of Port1.
 RW 
11 
P0IRTag[1] 
 Insert/Remove Priority Tag of Port0.
 RW 
11 
P4IRTag[1] 
 Insert/Remove Priority Tag of Port4.
 RW 
11 
 RO 
 RW 
1 
 Port 4 VLAN Index. 
 P4VLANIndex[2:0]=0b100 means port 4 use the fifth VLAN 
100