MDS212 Datasheet, PDF (80/111 Pages) Zarlink Semiconductor Inc – 12-Port 10/100Mbps Ethernet Switch

MDS212
Data Sheet
18.2.6.6 Flooding Control Register
• Access:
• Address:
Non-Zero-Wait-State, Direct Access,
h6DC
Write/Read
31
24 23
16 15 14 12 11
87
0
Unicast to CPU rate
Time Base
U2MR
Multicast to CPU Rate
Bit [7:0]
Bit [11:8]
Bit [14:12]
Bit [23:15]
Bit [31:24]
M2CR
U2MR
Time Base
U2CR
Reserved
Multicast to CPU Rate
Restricts the number of frames within the Time window defined
in bit[15:12]
Unicast to Multicast Rate
Restricts the number of flooding unicast frames within the Time
window
Defines the time window used by M2CR and U2MR
000 = 100us 001 = 200us 010 = 400us 011 = 800us
100 = 1.6ms 101 = 3.2ms 110 = 6.4ms 111 = 100us
Unicast to CPU Rate
Restricts the number of frames within the Time window defined
in bit[15:12]
18.2.6.7 MCAT - MCT Aging Timer
• Access:
• Address:
Non-Zero-Wait-State, Direct Access,
h6E0
Write/Read
31
20 19
0
MCT Aging Timer
Bit [19:0]
When the value is reached, it ages out
Default=0 msec (unit=msec) Must be configured to not zero value.
Suggestion value: 5msec.
18.2.6.8 TPMXR - Trunk Port Mapping Table Index Register
• Access:
Non-Zero-Wait-State, Direct Access,
• Address:
h6E4
• For Trunk port mapping Table pointer
Write/Read
31
87
0
Entry Index
Bit [7:0]
Bit [8:31]
Reserved
8-bit Table entry Index
Value set to 0
80
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