AX88180 datasheet(25/47 Pages) ASIX

25 / 47 page

AX88180

ASIX ELECTRONICS CORPORATION

4.25 MACID2--MAC ID2 Register

Offset Address = 0xFC78

Default = 0x0000_0000

Field

Name

Type

Default

Description

31:16

All 0’s

Reserved.

15:0

MID47_32

R/W

0x0000

MAC ID Address [47:32].

4.26 TXLEN--TX Length Register

Offset Address = 0xFC7C

Default = 0x0000_05FC

Field

Name

Type

Default

Description

31:11

All 0’s

Reserved

10:0

MAXTXLEN

R/W

0x5FC

Max TX packet size

This field defines the maximum raw packet size in transmittance. It is not

included 4 bytes CRC.

4.27 RXFILTER--RX Packet Filter Register

Offset Address = 0xFC80

Default = 0x0000_0004

Field

Name

Type

Default

Description

31:6

All 0’s

Reserved

GOODCRC

R/W

Good CRC enable

When this bit is enabled, AX88180 will receive any packet of good

CRC.

1 = enable

0 = disable

MULTI_HASH

R/W

Receive Multicast packet by lookup hash table.

When this is enabled, AX88180 will receive multicast packet by the

hash mapping function. It will refer to HASTAB0, HASHTAB1,

HASHTAB2 and HASHTAB3 to look up the table.

1 = enable

0 = disable

BROADCAST

R/W

Receive Broadcast packet

When this bit is enabled, AX88180 will receive the broadcast packet

1 = enable

0 = disable

UNICAST

R/W

Receive Directed Packet.

If this bit is enabled, AX88180 will compare the destination address

field of received packet with the address of MAC (refer to MACID0,

MACID1, MACID2).

When it is matched and good CRC, the packet

will be passed to driver. Otherwise it will be dropped.

1 = enable

0 = disable

MULTICAST

R/W

Receive all Multicast Packets.

If this bit is enabled, any multicast packet (good CRC) will be received

and passed to driver.

1 = enable

0 = disable

RXANY

R/W

Receive Anything.

If this bit is enabled, any packet whether it is good or fail will be

received and passed to driver.

1 = enable

0 = disable

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