LAN9116 Datasheet, PDF (25/109 Pages) SMSC Corporation – Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller

LAN9116
ERAL (Erase All): If erase/write operations are enabled in the EEPROM, this command will initiate a bulk erase of the
entire EEPROM.The EPC_TO bit is set if the EEPROM does not respond within 30ms.
FIGURE 3-5:
EEPROM ERAL CYCLE
t_CSL
EECS
EECLK
EEDIO (OUTPUT)
1
0
0
1
0
EEDIO (INPUT)
EWDS (Erase/Write Disable): After issued, the EEPROM will ignore erase and write commands. To re-enable
erase/write operations issue the EWEN command.
FIGURE 3-6:
EEPROM EWDS CYCLE
t_CSL
EECS
EECLK
EEDIO (OUTPUT)
1
0
0
0
0
EEDIO (INPUT)
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DS00002268A-page 25