AX88178

USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller

6.2.1.15 Multicast Filter Array (15h, read only and 16h, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

MA 0 [7:0]

MA 1 [7:0]

MA 2 [7:0]

MA 3 [7:0]

MA 4 [7:0]

MA 5 [7:0]

MA 6 [7:0]

MA 7 [7:0]

{MA7 [7:0], MA6 [7:0], MA5 [7:0], MA4 [7:0], MA3 [7:0], MA2 [7:0], MA1 [7:0], MA0 [7:0]} = the multicast

address bit map for multicast frame filtering block. See Figure 3: Multicast Filter Example, for example.

CRC32

{crc31, 30, 29, 28, 27, 26}

Address[5:0] = 1Ah

MAR[63:0] =

400_0000h

DA

81 81 81 81 81 81

Figure 3: Multicast Filter Example

6.2.1.16 Test Register (17h, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

MM [7:6]

LDRND

LDRND: Load Random number into MAC’s exponential back-off timer. User writes a “1” to enable the ASIC to load

a small random number into MAC’s back-off timer to shorten the back-off duration in each retry after

collision. This register is used for test purpose. Default value = 0.

MM [7:6]: Reserved.

6.2.1.17 Ethernet / HomePNA Phy Address Register (19h, read only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SecPhyType [2:0]

SecPhyID [4:0]

PriPhyType [2:0]

PriPhyID [4:0]

SecPhyType, SecPhyID: The Secondary PHY address loaded from serial EEPROM’s offset address 11h.

PriPhyType, PriPhyID: The Primarily PHY address loaded from serial EEPROM’s offset address 11h.

ASIX ELECTRONICS CORPORATION

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