AX88178

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

MFB [1:0]: Maximum Frame Burst transfer on USB bus.

00: 2048 Bytes

01: 4096 Bytes

10: 8192 Bytes

11: 16384 Bytes (default). User should set to this value when Jumbo packet mode is enabled to gain better transfer

throughput on USB bus.

6.2.1.13 IPG/IPG1/IPG2 Control Register (11h, read only and 12h, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

AA [7:0]

BB [7:0]

CC [7:0]

AA [6:0] = IPG [6:0].

BB [6:0] = IPG1 [6:0].

CC [6:0] = IPG2 [6:0].

IPG [6:0]: Inter Packet Gap for back-to-back transfer on TX direction in MII mode (default = 15h).

IPG1 [6:0]: IPG part1 value (default = 0Ch).

IPG2 [6:0]: IPG part1 value + part2 value (default = 12h).

AA [7]: Reserved.

BB [7]: Reserved.

CC [7]: Reserved.

6.2.1.14 Node ID Register (13h, read only and 14h, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

AA [7:0]

BB [7:0]

CC [7:0]

DD [7:0]

EE [7:0]

FF [7:0]

AA [7:0] = NOID 0.

BB [7:0] = NOID 1.

CC [7:0] = NOID 2.

DD [7:0] = NOID 3.

EE [7:0] = NOID 4.

FF [7:0] = NOID 5.

{FF [7:0], EE [7:0], DD [7:0], CC [7:0], BB [7:0], AA [7:0]} = Ethernet MAC address [47:0] of the node.

ASIX ELECTRONICS CORPORATION

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