zl50409 Zarlink Semiconductor, zl50409 Datasheet - Page 78

• Manufacturer Part Number: zl50409
• Description: Managed 9-port 10/100m Ethernet Switch
• Manufacturer: Zarlink Semiconductor

12.3.2.5
I²C Address h3E, CPU Address:h105
Accessed by CPU and I²C (R/W)
In Port Based VLAN Mode
In Tag-based VLAN Mode
Bit [4]:
Bits [7:5]:
Bits [2:0]:
Bits [5:3]:
Bit [6]:
Bit [7]:
Bit [0]:
Bit [1]:
Bit [2]:
PVMAP00_3 – Port 0 Configuration Register 3
Untrusted Port.
This register is used to change the VLAN priority field of a packet to a
predetermined priority.
1: VLAN priority field is changed to Bit [7:5] at ingress port (Default)
0: Keep VLAN priority field
Untag Port Priority (Default 0x7)
Reserved
Default Transmit priority. Used when Bit [7]=1 (Default 0)
Transmit Priority Level 0 (Lowest)
Transmit Priority Level 1
Transmit Priority Level 2
Transmit Priority Level 3 (Highest)
Default Discard priority. Used when Bit [7]=1
0 – Discard Priority Level 0 (Lowest) (Default)
1 – Discard Priority Level 1(Highest)
Enable Fix Priority (Default 0)
0 - Disable. All frames are analysed. Transmit Priority and Discard Priority are
based on VLAN Tag, TOS or Logical Port.
1 - Enable. Transmit Priority and Discard Priority are based on values
programmed in bit [6:3]
Not used
Ingress Filter Enable
0 - Disable Ingress Filter. Packets with VLAN not belonging to source port are
forwarded, if destination port belongs to the VLAN. Symmetric VLAN. (Default)
1 - Enable Ingress Filter. Packets with VLAN not belonging to source port are
filtered. Asymmetric VLAN.
Force untag out (VLAN tagging is based on IEEE 802.1Q rule) .
0 - Disable (Default)
1 - Force untagged output. All packets transmitted from this port are untagged.
This bit is used when this port is connected to legacy equipment that does not
support VLAN tagging.
Zarlink Semiconductor Inc.
ZL50409
78
Data Sheet