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LAN9312 Datasheet(PDF) 146 Page - SMSC Corporation

Part # LAN9312
Description  High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
PDF  458 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

LAN9312 Datasheet(HTML) 146 Page - SMSC Corporation

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High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Revision 1.2 (04-08-08)
146
SMSC LAN9312
DATASHEET
10.2.3.3
ERAL (Erase All)
If erase/write operations are enabled in the EEPROM, this command will initiate a bulk erase of the
entire EEPROM. The EPC_TIMEOUT bit of the EEPROM Command Register (E2P_CMD) is set if the
EEPROM does not respond within 30mS.
10.2.3.4
EWDS (Erase/Write Disable)
After this command is issued, the EEPROM will ignore erase and write commands. To re-enable
erase/write operations, the EWEN command must be issued.
Figure 10.8 EEPROM ERAL Cycle
Figure 10.9 EEPROM EWDS Cycle
0
10
10
EECLK
EEDI
EEDO
EECS
0
10
00
EECLK
EEDI
EEDO
EECS



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