lan7500 Standard Microsystems Corp., lan7500 Datasheet - Page 33

• Manufacturer Part Number: lan7500
• Description: Hi-speed Usb 2.0 To 10/100/1000 Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

Hi-Speed USB 2.0 to 10/100/1000 Ethernet Controller
Datasheet
SMSC LAN7500/LAN7500i
EC Sets PM E_M ODE_SEL = 1 And
LAN 7500/LAN 7500i Has EEPROM
W ith GPIO PM E Enable =1, Enters
LAN7500/LAN7500i Asserts PM E
LAN7500/LAN7500i Resets And
Host & Chipset Powered Off
VBUS_DET Set To 0 By EC
EC Asserts PM E_CLEAR
Process W akeup Event?
W akeup Event Detected
EC To W ake System To
By LAN7500/LAN7500i?
Deassert PM E_CEAR
Asserts PM E_CLEAR
EC Detects PM E
Deasserts PM E
O r Via Circuitry
PM E M ode
Figure 4.2 PME Operation
True
No
DATASHEET
33
False
LAN7500/LAN7500i Connects To USB
EC Sets PM E_M ODE_SEL = 0 And
LAN7500/LAN7500i Is In Norm al
LAN7500/LAN7500i Resets And
EC Signals Enable To Host
VBUS_DET Set to 1 By EC
Yes
Asserts PM E_CLEAR
Deasserts PM E
Or Via Circuitry
Operation
Bus
Revision 1.0 (11-01-10)