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LAN9730 데이터시트(PDF) 91 Page - Microchip Technology

부품명 LAN9730
상세설명  High-Speed Inter-Chip USB 2.0 to 10/100 Ethernet Controller
PDF  222 Pages
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제조업체  MICROCHIP [Microchip Technology]
홈페이지  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9730 데이터시트(HTML) 91 Page - Microchip Technology

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 2012-2015 Microchip Technology Inc.
DS00001946A-page 91
LAN9730/LAN9730i
4.7.4.1
Supported EEPROM Operations
The EEPROM controller supports the following EEPROM operations under host control via the E2P_CMD register. The
operations are commonly supported by “93C46” EEPROM devices. A description and functional timing diagram is pro-
vided below for each operation. Refer to the E2P_CMD register description in Section 6.3.12, "EEPROM Command
Register (E2P_CMD)" for E2P_CMD field settings for each command.
ERASE (Erase Location): If erase/write operations are enabled in the EEPROM, this command will erase the location
selected by the EPC Address field (EPC_ADDR). The EPC_TO bit is set if the EEPROM does not respond within 30 ms.
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_TO bit is set if the EEPROM does not respond within 30 ms.
FIGURE 4-21:
EEPROM ERASE CYCLE
FIGURE 4-22:
EEPROM ERAL CYCLE
ERASE CYCLE
1
EECLK
EEDIO (INPUT)
EEDIO (OUTPUT)
EECS
11
A6
A0
tCSL
ERAL CYCLE
0
EECLK
EEDIO (INPUT)
EEDIO (OUTPUT)
EECS
10
10
tCSL



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