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LAN9500AI Datasheet(PDF) 85 Page - Microchip Technology |
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LAN9500AI Datasheet(HTML) 85 Page - Microchip Technology |
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85 / 213 page  2010 - 2015 Microchip Technology Inc. DS00001875A-page 85 LAN950x EWEN (Erase/Write Enable): Enables the EEPROM for erase and write operations. The EEPROM will allow erase and write operations until the “Erase/Write Disable” command is sent, or until power is cycled. 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. FIGURE 5-23: EEPROM EWDS CYCLE Note: The EEPROM device will power-up in the erase/write-disabled state. Any erase or write operations will fail until an Erase/Write Enable command is issued. FIGURE 5-24: EEPROM EWEN CYCLE 0 EECLK EEDIO (INPUT) EEDIO (OUTPUT) EECS 10 00 tCSL 0 EECLK EEDIO (INPUT) EEDIO (OUTPUT) EECS 10 11 tCSL |
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