Datasheet

16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
Datasheet
Revision 2.9 (03-01-12) 42 SMSC LAN9220
DATASHEET
READ (Read Location): This command will cause a read of the EEPROM location pointed to by EPC
Address (EPC_ADDR). The result of the read is available in the E2P_DATA register.
Figure 3.15 EEPROM READ Cycle
WRITE (Write Location): If erase/write operations are enabled in the EEPROM, this command will
cause the contents of the E2P_DATA register to be written to the EEPROM location selected by the
EPC Address field (EPC_ADDR). The EPC_TO bit is set if the EEPROM does not respond within
30ms.
Figure 3.16 EEPROM WRITE Cycle
WRAL (Write All): If erase/write operations are enabled in the EEPROM, this command will cause the
contents of the E2P_DATA register to be written to every EEPROM memory location. The EPC_TO bit
is set if the EEPROM does not respond within 30ms.
Figure 3.17 EEPROM WRAL Cycle
110A6
EECS
EECLK
EEDIO (OUTPUT)
A0
D7 D0
EEDIO (INPUT)
t
CSL
0
EECLK
EEDIO (INPUT)
EEDIO (OUTPUT)
EECS
11A6 A0 D7 D0
t
CSL
0
EECLK
EEDIO (INPUT)
EEDIO (OUTPUT)
EECS
1
D7 D0
0 01
t
CSL