Mac Control Registers; Station Address ($ Port_Index +0X00 – +0X01); Desired Duplex ($ Port_Index + 0X02); Fd Fc Type ($ Port_Index + 0X03) - Intel IXF1104 Datasheet

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Intel IXF1104 4-Port Gigabit Ethernet Media Access Controller
8.4.1

MAC Control Registers

Table 70 through
provide details on the control and status registers associated with each MAC port. The register
address is 'Port_index + 0x**', where the port index is set at any value from 0x0 through 0x5. All
registers are 32-bit. The unused bits of the registers are read-only and are set permanently to zero.
Table 70. Station Address ($ Port_Index +0x00 – +0x01)
Name
Station Address
Low
Station Address
High
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 71. Desired Duplex ($ Port_Index + 0x02)
Bit Name
Register Description: Chooses between half-duplex and full-duplex operation in RGMII
100 Mbps or 10 Mbps mode only.
This register must be set to the default value of 1 and must not be changed when operating in
RGMII 1000 Mbps, GMII, or fiber mode.
31:1 Reserved
0 Duplex Select
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
Table 72. FD FC Type ($ Port_Index + 0x03)
Name
FD FC Type
1. RO = Read Only, No clear on Read; R = Read, Clear on Read; W = Write only; R/W = Read/Write, No
clear; R/W/C = Read/Write, Clear on Write
163
Table 92 "Port Multicast Address ($ Port_Index +0x1A – +0x1B)" on page 173
Description
Source MAC address bit 31-0.
This address is inserted in the source address
field when transmitting pause frames, and is also
used to compare against unicast pause frames
at the receiving side.
Source MAC address bit 47-32.
This address is inserted in the source address
field when transmitting pause frames, and is also
used to compare against unicast pause frames
at the receiving side. Bits 15:0 of this register are
assigned to bits 47:32 of the station address.
Description
Reserved
0 = Half-duplex
1 = Full-duplex
NOTE: Half-duplex operation applies only to
10/100 Mbps speed on copper media in RGMII
mode only. Gigabit speed on either media requires
full-duplex.
Description
This value fills the Type field of the Transmitted
Pause frames. Only bits 15:0 of this register are
used.
1
Address Type Default
Port_Index
R/W 0x0000000
+ 0x00
Port_Index
R/W 0x00000000
+ 0x01
1
Type Default
0x00000001
R 0x00000000
R/W 1
1
Address Type Default
Port_Index
R/W 0x00008808
+ 0x03

Datasheet

Document Number: 278757
Revision Number: 009
Revision Date: 27-Oct-2005