High-Performance Single-Chip 10/100 Ethernet Controller with HP Auto-MDIX
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.
tCSL
EECS
EECLK
1
1
0
A6
A0
EEDIO (OUTPUT)
EEDIO (INPUT)
D7
D0
Figure 3.7 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.
tCSL
EECS
EECLK
EEDIO (OUTPUT)
EEDIO (INPUT)
1
0
1
A6
A0
D7
D0
Figure 3.8 EEPROM WRITE Cycle
Revision 1.5 (07-18-06)
SMSC LAN9218
DATA3S4HEET
SMSC [ SMSC CORPORATION ]
