Datasheet

Hi-Speed USB 2.0 to 10/100/1000 Ethernet Controller
Datasheet
SMSC LAN7500/LAN7500i 33 Revision 1.0 (11-01-10)
DATASHEET
Figure 4.2 PME Operation
Wakeup Event Detected
By LAN7500/LAN7500i?
LAN7500/LAN7500i Asserts PME
True
False
Deassert PME_CEAR
LAN7500/LAN7500i Has EEPROM
With GPIO PME Enable =1, Enters
PME Mode
EC Detects PME
EC To Wake System To
Process Wakeup Event?
EC Asserts PME_CLEAR
LAN7500/LAN7500i Resets And
Deasserts PME
VBUS_DET Set to 1 By EC
Or Via Circuitry
EC Sets PME_MODE_SEL = 0 And
Asserts PME_CLEAR
EC Signals Enable To Host
LAN7500/LAN7500i Resets And
Deasserts PME
LAN7500/LAN7500i Connects To USB
Bus
LAN7500/LAN7500i Is In Normal
Operation
Yes
No
Host & Chipset Powered Off
VBUS_DET Set To 0 By EC
Or Via Circuitry
EC Sets PME_MODE_SEL = 1 And
Asserts PME_CLEAR