LAN9313 Datasheet, PDF (110/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

8.2.3.3
Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
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_TIMEOUT bit of the EEPROM Command Register (E2P_CMD) is set if the
EEPROM does not respond within 30mS.
EECS
EECLK
EEDO
EEDI
1
0
0
1
0
Figure 8.8 EEPROM ERAL Cycle
8.2.3.4
EWDS (Erase/Write Disable)
After this command is issued, the EEPROM will ignore erase and write commands. To re-enable
erase/write operations, the EWEN command must be issued.
EECS
EECLK
EEDO
EEDI
1
0
0
0
0
Figure 8.9 EEPROM EWDS Cycle
Revision 1.2 (04-08-08)
110
DATASHEET
SMSC LAN9313/LAN9313i