LAN9117_08 Datasheet, PDF (37/136 Pages) SMSC Corporation – High Performance Single-Chip 10/100 Non-PCI Ethernet Controller

High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
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.
EECS
EECLK
EEDIO (OUTPUT)
EEDIO (INPUT)
1
1
0
A6
A0
D7
t_CSL
D0
Figure 3.8 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.
EECS
EECLK
EEDIO (OUTPUT)
EEDIO (INPUT)
1
0
1
A6
A0
D7
t_CSL
D0
Figure 3.9 EEPROM WRITE Cycle
SMSC LAN9117
37
DATASHEET
Revision 1.5 (07-11-08)