MDS213 Datasheet, PDF (89/120 Pages) Zarlink Semiconductor Inc – 12-Port 10/100Mbps + 1Gbps Ethernet Switch

MDS213
18.2.10.5 AMAR[1:0] - Multicast Address Reg. For MAC Control Frames
This 6-byte MAC Address is stored in two 32-bit registers
• AMAR0
MAC Address Byte [3:0]
• Address: h674
• AMAR1
MAC Address Byte [5:4]
• Address: h678
Access: Non-Zero-Wait-State,
Direct Access, Write/Read
31
AMAR0
AMAR1
MAC 3
24 23
MAC 2
16 15
87
MAC 1
MAC 5
MAC 0
MAC 4
Data Sheet
0
18.2.10.6 AMCT - MAC Control Frame Type Code Register
Access: Non-Zero-Wait-State,
Direct Access, Write/Read
Address: h67C
31
24 23
16 15
87
0
Frame Type
• 2-byte MAC Control Frame Type Code defined by IEEE 802.3X Full Duplex Flow Control Standard
18.2.10.7 ADAR [1:0] - Base MAC Address Registers
The 6-byte MAC Address is stored in two 32-bit registers
• ADAR0
MAC Address Byte [3:0]
• Address: h600
• ADAR1
MAC Address Byte [5:4]
• Address: h604
Access: Non-Zero-Wait-State,
Direct Access, Write/Read
31
AMAR0
MAC 3
24 23
MAC 2
16 15
11
87
MAC 1
AMAR1
MAC 5 0 0 0 0
3
0
MAC 0
MAC 4
• These two registers define the base MAC address of the device.
• Bit [3:0] of Byte 0 (MAC5) is always set to 0.
• MAC address for each port is defined by
• MAC Address for Port n = Base MAC Address + MAC Offset [n] where n = {0..12}
• MAC Offset[n] is defined by the following registers
89
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