
RTL8316
2001/11/09                   
     Rev.1.72
8 
ENVLAN 
I 
(P-down) 
P0TXD0 
Enable Port Based VLAN configuration function: 
Latched during 
hardware reset. The VLAN topology is control by VlanType pin, but 
will be disabled if the trunking function is enabled. 
1: Enable the VLAN function on each port.  
0: Disable the VLAN function on each 16 ports. (default) 
P11TXE  
VLAN topology type selection: 
Used to select 14 VLANs or 15 
VLANs topology. During hardware reset, the pull-high/low value will 
control the HOME VLAN topology type :  
1: Select 15 VALNs (port#0~14) with 1 overlapping port  
     (port #15) topology.  
0: Select 14 VLANs (port#0~13) with 2 overlapping ports  
     (port #14,15) topology. 
(default)
[P6TXD0, 
P6TXE] 
hardware reset. Setting as follows:  
00: Disable port based priority. (default)
01: Set port#0~1 as high priority ports. (2 ports)  
10: Set port#0~3 as high priority ports. (4 ports) 
11: Set port#0~7 as high priority ports. (8 ports) 
P5TXD0 
Enable 802.1p VLAN Tag priority based QoS function: 
 Latched 
during hardware reset. 
1: Enabled 
0: Disabled  (default) 
P5TXE 
Enable TCP/IP TOS/DS (DiffServ) based QoS function: 
 Latched 
during hardware reset. 
1: Enabled 
High Priority
: if TOS/DS[0:5] =  
          (EF) "101110"; 
          (AF) "001010",  "010010",  
              "011010",  "100010"; 
          (Network Control) "11x000";     
       Low Priority
: if TOS/DS = other  
          codepoint values. 
0: Disabled  (default) 
(DS = Differentiated Service) 
[P7TXD0, 
P7TXE] 
hardware reset. 
 The frame service rate is  
 High-pri queue: Low-pri queue 
11 = always high priority queue first (default)  
10 = 8:1  
01 = 4:1  
00 = 2:1  
P4TXD0 
Enable Flow Control Ability Auto Turn Off: 
Latched during 
hardware reset. Enable Auto turn off low priority queue's flow 
control ability 1~2 seconds whenever the port received a high 
priority frame. The flow control ability will be re-enabled when no 
high priority frames are received for the 1~2 second period. 
1: Enabled 
0: Disabled 
VlanType 
I 
(P-down) 
EnPortPri[1:0] 
I 
(P-down, 
P-down) 
Enable Port based priority QoS function: 
Latched during 
En8021pPri 
I 
(P-down) 
EnDSPri 
I 
(P-down) 
QWEIGHT[1:0] 
I 
(P-up, 
  P-up) 
Weighted round robin ration of priority queue: 
Latched during 
EnFCAutoOff 
I 
(P-down)