lan9220 Standard Microsystems Corp., lan9220 Datasheet - Page 42

• Manufacturer Part Number: lan9220
• Description: 16-bit Non-pci Small Form Factor 10/100 Ethernet Controller With Variable Voltage I/o & Hp Auto-mdix Support
• Manufacturer: Standard Microsystems Corp.

Revision 2.6 (12-04-08)
EEDIO (OUTPUT)
EEDIO (OUTPUT)
EEDIO (INPUT)
EEDIO (INPUT)
EEDIO (OUTPUT)
EEDIO (INPUT)
EECLK
EECLK
EECS
EECS
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.
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.
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.
EECLK
EECS
1
1
0
0
1
0
Figure 3.10 EEPROM WRITE Cycle
1
Figure 3.11 EEPROM WRAL Cycle
Figure 3.9 EEPROM READ Cycle
1
16-bit Non-PCI Small Form Factor 10/100 Ethernet Controller with Variable Voltage I/O & HP Auto-MDIX Support
0
A6
1
0
DATASHEET
A6
42
A0
D7
D7
A0
D7
D0
D0
t
t
CSL
CSL
D0
t
CSL
SMSC LAN9220
Datasheet