ZL50404GDC ZARLINK [Zarlink Semiconductor Inc], ZL50404GDC Datasheet - Page 84

• Manufacturer Part Number: ZL50404GDC
• Description: Lightly Managed/Unmanaged 5-Port 10/100M Ethernet Switch
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

Their respective priority can be programmed via Well_Known_Port [7:0] priority register. Well_Known_Port_Enable
can individually turn on/off each Well Known Port if desired.
Similarly, the User Defined Logical Port provides the user programmability to the priority, plus the flexibility to select
specific logical ports to fit the applications. The 8 User Logical Ports can be programmed via User_Port 0-7
registers. Two registers are required to be programmed for the logical port number. The respective priority can be
programmed to the User_Port [7:0] priority register. The port priority can be individually enabled/disabled via
User_Port_Enable register.
The User Defined Range provides a range of logical port numbers with the same priority level. Programming is
similar to the User Defined Logical Port. Instead of programming a fixed port number, an upper and lower limit need
to be programmed, they are: {RHIGHH, RHIGHL} and {RLOWH, RLOWL} respectively. If the value in the upper
limit is smaller or equal to the lower limit, the function is disabled. Any IP packet with a logical port that is less than
the upper limit and more than the lower limit will use the priority specified in RPRIORITY.
13.3.6.22
I²C Address h0A8, CPU Address 560
Accessed by CPU and I²C (R/W)
13.3.6.23
I²C Address h0A9, CPU Address 561
Accessed by CPU and I²C (R/W)
13.3.6.24
I²C Address h0AA, CPU Address 562
Accessed by CPU and I²C (R/W)
Bits[3:0]:
Bits[7:4]:
Bits[3:0]:
Bits[7:4]:
Bits[3:0]:
Bits[7:4]:
WELL_KNOWN_PORT[1:0]_PRIORITY- Well Known Logic Port 1 and 0 Priority
WELL_KNOWN_PORT[3:2]_PRIORITY- Well Known Logic Port 3 and 2 Priority
WELL_KNOWN_PORT[5:4]_PRIORITY- Well Known Logic Port 5 and 4 Priority
Priority setting, transmission + dropping, for Well known port 0 (23 for telnet)
Priority setting, transmission + dropping, for Well known port 1 (512 for
TCP/UDP)
Priority setting, transmission + dropping, for Well known port 2 (6000 for
XWIN)
Priority setting, transmission + dropping, for Well known port 3 (443 for HTTP
sec)
Priority setting, transmission + dropping, for Well known port 4 (111 for sun
remote procedure call)
Phone call setup)
Priority setting, transmission + dropping, for Well known port 5 (22555 for IP
Zarlink Semiconductor Inc.
ZL50404
84
Data Sheet