LAN9311 Datasheet, PDF (148/461 Pages) SMSC Corporation – Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface

Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
Datasheet
10.2.3.5
EWEN (Erase/Write Enable)
This command enables the EEPROM for erase and write operations. The EEPROM will allow erase
and write operations until the EWDS command is sent, or until power is cycled.
Note: The EEPROM will power-up in the erase/write disabled state. Any erase or write operations
will fail until an EWEN command is issued.
EECS
EECLK
EEDO
EEDI
1
0
0
1
1
Figure 10.10 EEPROM EWEN Cycle
10.2.3.6
READ (Read Location)
This command will cause a read of the EEPROM location pointed to by the EPC_ADDRESS field of
the EEPROM Command Register (E2P_CMD). The result of the read is available in the EEPROM Data
Register (E2P_DATA).
EECS
EECLK
EEDO
1
1
0
Ax
A0
EEDI
D7
D0
Figure 10.11 EEPROM READ Cycle
Revision 2.0 (02-14-13)
148
DATASHEET
SMSC LAN9311/LAN9311i