ASIX ELECTRONICS CORPORATION

28

AX88772

USB to 10/100 Fast Ethernet/HomePNA Controller

6.2.2

Remote Wakeup Description

After AX88772 enters into suspend mode, either the USB host or AX88772 itself can awake it up and resume back to the

original operation mode before it entered suspend. Following truth table shows the chip setting, wakeup event, and device

response supported by this ASIC. Note that “X” stands for don’t-care.

Setting

Wakeup Event

Device

awakes up?

Wakeup

by

RWU bit

of Flag

byte in

EEPRO

M

Set_Feature

standard

command

RWLU of

Monitor

Mode

Register

RWMP of

Monitor

Mode

register

Host send

resume

signal

Receiving

Magic

Packet

EXTWAKE

UP_N pin

Linkup

detected

on

Primary

Phy

Linkup

detected on

Secondary

Phy

Host

X

X

X

X

J -> K

Yes

Device

0

0

X

X

X

X

X

X

No

Device

1

1

0

1

Yes

Yes

Device

1

1

1

0

Yes

Yes

Device

1

1

1

0

Yes

Yes

Device

1

1

X

X

Low-pulse

Yes

Table 5: Remote Wakeup Truth Table

6.3 Interrupt Endpoint

The Interrupt Endpoint contains 8 bytes of data and its frame format is defined as: A100_BB00_CCDD_EEFF.

Where BB byte in byte 3:

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

Reserved

MDINT

FLE

SPLS

PPLS

PPLS: Primarily PHY Link State.

1: Link is up.

0: Link is down.

SPLS: Secondary PHY Link State.

1: Link is up.

0: Link is down.

FLE: Bulk Out Ethernet Frame Length Error.

1: Proprietary Length field has parity error during Bulk Out transaction.

0: Proprietary Length field has no parity error during Bulk Out transaction.

MDINT: Input level of MDINT pin. The MDINT pin can be connected to MDINT# pin of Ethernet Phy.

1: When MDINT input pin = 1.

0: When MDINT input pin = 0.

CCDD byte in byte 5 and 6: Primary Phy’s register value, whose offset is given in High byte of EEPROM offset 0Fh.

EEFF byte in byte 7 and 8: Primary Phy’s register value, whose offset is given in Low byte of EEPROM offset 0Fh.