lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 147

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
SMSC LAN9312
10.2.3.5
10.2.3.6
EECLK
EEDO
EECS
EEDI
EECLK
EEDO
EECS
EEDI
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
READ (Read Location)
This command will cause a read of the EEPROM location pointed to by the EPC_ADDRESS field of
the
Register
EEPROM Command Register
will fail until an EWEN command is issued.
(E2P_DATA).
1
1
1
Figure 10.10 EEPROM EWEN Cycle
Figure 10.11 EEPROM READ Cycle
0
0
(E2P_CMD). The result of the read is available in the
DATASHEET
Ax
0
147
1
A0
1
D7
D0
Revision 1.2 (04-08-08)
EEPROM Data