AX88772_07 Datasheet, PDF (28/43 Pages) ASIX Electronics Corporation – USB to 10/100 Fast Ethernet/HomePNA Controller

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.
Wakeup
by
Host
Device
Device
Device
Device
Device
Setting
RWU bit Set_Feature
of Flag standard
byte in command
EEPRO
M
X
X
0
0
1
1
1
1
1
1
1
1
RWLU of
Monitor
Mode
Register
X
X
0
1
1
X
RWMP of
Monitor
Mode
register
X
X
1
0
0
X
Host send
resume
signal
J -> K
Wakeup Event
Receiving EXTWAKE Linkup
Magic UP_N pin detected
Packet
on
Primary
Phy
X
X
X
Yes
Yes
Low-pulse
Device
awakes up?
Linkup
detected on
Secondary
Phy
Yes
X
No
Yes
Yes
Yes
Yes
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
Reserved
Bit4
Bit3
Bit2
MDINT FLE
Bit1
SPLS
Bit0
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.
28
ASIX ELECTRONICS CORPORATION