LAN89218 datasheet(96/148 Pages) MICROCHIP

Part #	LAN89218

Description	High-Performance Single-Chip 10/100 Ethernet Controller for Automotive Applications

PDF	148 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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96 / 148 page

LAN89218

DS60001255B-page 96

 2008-2015 Microchip Technology Inc.

5.3.23

E2P_CMD – EEPROM COMMAND REGISTER

This register is used to control the read and write operations with the Serial EEPROM.

Offset:

B0h

Size:

32 bits

Bits

Description

Type

Default

EPC Busy: When a 1 is written into this bit, the operation specified in the

EPC command field is performed at the specified EEPROM address. This bit

will remain set until the operation is complete. In the case of a read this

means that the host can read valid data from the E2P data register. The

E2P_CMD and E2P_DATA registers should not be modified until this bit is

cleared. In the case where a write is attempted and an EEPROM is not pres-

ent, the EPC Busy remains busy until the EPC Time-out occurs. At that time

the busy bit is cleared.

Note:

EPC busy will be high immediately following power-up or reset.

After the EEPROM controller has finished reading (or attempting

to read) the MAC address from the EEPROM the EPC Busy bit is

cleared.

LAN89218 Datasheet(PDF) 96 Page - Microchip Technology