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LAN9500AI データシート(PDF) 85 Page - Microchip Technology

部品番号 LAN9500AI
部品情報  LAN950x USB 2.0 to 10/100 Ethernet Controller
PDF  213 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9500AI データシート(HTML) 85 Page - Microchip Technology

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 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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