LAN9420I-NU Standard Microsystems (SMSC), LAN9420I-NU Datasheet - Page 36
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LAN9420I-NU
Manufacturer Part Number
LAN9420I-NU
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LAN9420I-NU.pdf
(170 pages)
Specifications of LAN9420I-NU
Operating Supply Voltage (typ)
3.3V
Operating Supply Voltage (min)
3V
Operating Supply Voltage (max)
3.6V
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
128
Lead Free Status / RoHS Status
Compliant
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Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
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.
t
CSL
EECS
EECLK
EEDIO (OUTPUT)
1
1
0
A6
A0
EEDIO (INPUT)
D7
D0
Figure 3.12 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.
t
CSL
EECS
EECLK
EEDIO (OUTPUT)
1
0
1
A6
A0
D7
D0
EEDIO (INPUT)
Figure 3.13 EEPROM WRITE Cycle
Revision 1.4 (12-17-08)
36
SMSC LAN9420/LAN9420i
DATASHEET
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