High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
10.2.3.3
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 10.8 EEPROM ERAL Cycle
10.2.3.4
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 10.9 EEPROM EWDS Cycle
Revision 1.2 (04-08-08)
146
SMSC LAN9312
DATASHEET
SMSC [ SMSC CORPORATION ]
