MDS212 Datasheet, PDF (81/111 Pages) Zarlink Semiconductor Inc – 12-Port 10/100Mbps Ethernet Switch

MDS212
Data Sheet
18.2.6.9 TPMTD - Trunking Port Mapping Table Data Register
• Access:
• Address:
Non-Zero-Wait-State, Direct Access,
h6E8
Write/Read
31
43
0
DV
Port ID
Bit [0:3]
Bit [4]
Port ID
DV
Trunking port
Device ID
18.2.6.10 PTR - Pacing Time Regulation
• Access
Non-Zero-Wait-State Direct-Access
Write/Read
• Address:
h6EC
• Use for Pacing traffic to Remote Ports via XpressFlow Pipe or Local transmission
31
15 12 11
87
43
0
UC_TM MC_TM
100_TM
Bit [3:0]
Bit [7:4]
Bit [11:8]
bit[15:12]
100_TM
RSVD
mc_TM
uc_TM
100M port timer
Default =5
Multicast timer
Default =5
Unicast timer
Default =5
Unit time = 80 nsec.(for 64Bytes Frame.)
Note that the Frame Engine determines the tic value dependent upon the frame. If short frame, it takes above
value. For long frame (> 64 frame), it will double the above value as the reference.
18.2.6.11 MTCR - MCT Threshold & Counter Register
• Access:
• Address:
Non-Zero-Wait-State, Direct Access,
h6F0
Write/Read
31
22 21
11 10
0
MCT threshold
Bit [10:0]
Bit [21:11]
Reserved
MCT Threshold
Alert system when free MCT entries are below this threshold
18.2.7 Link List Management
18.2.7.1 LKS - Link List Status Register
• Access:
• Address:
Zero-Wait-State,
h680
Direct Access,
31
Read only
43 2 1 0
Bit [0]
Mail Box is not ready for CPU to send entry to HISC
1=Not Ready
0=Ready
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