ASIX ELECTRONICS CORPORATION

18

AX88178 L

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

6.2.1.9 SROM Write Register (0Ch, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

AA [7:0]

00h

CC [7:0]

DD [7:0]

AA [7:0]: The write address of Serial EEROM.

{ DD [7:0], CC [7:0] }: The write data value of Serial EEROM

6.2.1.10 Write SROM Enable (0Dh, write only)

User issues this command to enable write permission to Serial EEPROM from SROM Write Register.

6.2.1.11 Write SROM Disable (0Eh, write only)

User issues this command to disable write permission to Serial EEPROM from SROM Write Register.

6.2.1.12 Rx Control Register (0Fh, read only and 10h, write only)

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

SO

Reserved

AP

AM

AB

SEP

AMALL

PRO

0h

Reserved

MFB [1:0]

AA [7:0] = { SO, Reserved, AP, AM, AB, Reserved, AMALL, PRO }

BB [7:0] = { 0h, Reserved [3:2], SB [1:0] }

PRO: PACKET_TYPE_PROMISCUOUS.

1: All frames received by the ASIC are forwarded up toward the host.

0: Disabled (default).

AMALL: PACKET_TYPE_ALL_MULTICAST.

1: All multicast frames received by the ASIC are forwarded up toward the host, not just the frames whose

scrambling result of DA matching with multicast address list provided in Multicast Filter Array Register.

0: Disabled. This only allows multicast frames whose scrambling result of DA field matching with multicast

address list provided in Multicast Filter Array Register to be forwarded up toward the host (default).

SEP: Save Error Packet.

1: Received packets with CRC error are saved and forwarded to the host anyway.

0: Received packets with CRC error are discarded automatically without forwarding to the host (default).

AB: PACKET_TYPE_BROADCAST.

1: All broadcast frames received by the ASIC are forwarded up toward the host (default).

0: Disabled.

AM: PACKET_TYPE_MULTICAST.

1: All multicast frames whose scrambling result of DA matching with multicast address list are forwarded up to the

host (default).

0: Disabled.

AP: Accept Physical Address from Multicast Filter Array.

1: Allow unicast packets to be forwarded up toward host if the lookup of scrambling result of DA is found within

multicast address list.

0: Disabled, that is, unicast packets filtering are done without regarding multicast address list (default).

SO: Start Operation.

1: Cactus start.

0: Cactus stop (default).