lan9215 Standard Microsystems Corp., lan9215 Datasheet - Page 38

• Manufacturer Part Number: lan9215
• Description: Lan9215 16-bit Non-pci 10/100 Ethernet Controller With Hp Auto-mdix Support
• Manufacturer: Standard Microsystems Corp.

Revision 2.3 (08-06-08)
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 3.5 EEPROM EWDS Cycle
Figure 3.6 EEPROM EWEN Cycle
0
0
DATASHEET
0
0
38
0
1
0
16-bit Non-PCI 10/100 Ethernet Controller with HP Auto-MDIX Support
1
t
CSL
t
CSL
SMSC LAN9215
Datasheet