lan9117 Standard Microsystems Corp., lan9117 Datasheet - Page 36

• Manufacturer Part Number: lan9117
• Description: Lan9117 High-performance Single-chip 10/100 Non-pci Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

Revision 1.5 (07-11-08)
EEDIO (OUTPUT)
EEDIO (INPUT)
EEDIO (OUTPUT)
EWDS (Erase/Write Disable): After issued, the EEPROM will ignore erase and write commands. To
re-enable erase/write operations issue the EWEN command.
EWEN (Erase/Write Enable): Enables the EEPROM for erase and write operations. The EEPROM
will allow erase and write operations until the “Erase/Write Disable” command is sent, or until power
is cycled.
Note: The EEPROM device will power-up in the erase/write-disabled state. Any erase or write
EEDIO (INPUT)
EECLK
EECS
operations will fail until an Erase/Write Enable command is issued.
EECLK
EECS
1
1
Figure 3.6 EEPROM EWDS Cycle
Figure 3.7 EEPROM EWEN Cycle
0
0
DATASHEET
0
0
36
High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
0
1
0
1
t
CSL
t
CSL
SMSC LAN9117
Datasheet