MDS213 Datasheet, PDF (84/120 Pages) Zarlink Semiconductor Inc – 12-Port 10/100Mbps + 1Gbps Ethernet Switch

MDS213
18.2.6.11 MTCR - MCT Threshold & Counter Register
Access: Non-Zero-Wait-State,
Direct Access, Write/Read
Address: h6F0
31
22 21
11 10
MCT threshold
Data Sheet
0
Bit [10:0]
Bit [21:11]
Bit [31:22]
Reserved
MCT Threshold
Reserved
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: Zero-Wait-State,
Direct Access,
Address: h680
31
Read only
43 2 1 0
Bit [0]
Bit [1]
Bit [2]
Bit [3]
Bit [31:4]
Mail Box is not ready for CPU to send entry to HISC
1=Not Ready0=Ready
Free Mail Box is not ready for CPU to put entry into
1= Not Ready0=Ready
CPU gets Mail from HISC
1= Ready0=Not Ready
Free Mail Box has entry for CPU to get
1=Ready 0=Not Ready
Reserved
18.2.7.2 AMBX - Mail Box Access Port
Access: Zero-Wait-State, Direct Access, Write/Read
Address: h684
In write mode, CPU sends Mail to HISC
In Read mode, CPU receives Mail from HISC
31 30
21 20
Entry Handle
21 0
0 00
84
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