LAN9211 datasheet(101/147 Pages) SMSC

部件名	LAN9211

功能描述	High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

PDF	147 Pages

Scroll/Zoom	100%

制造商	SMSC [SMSC Corporation]

网页	http://www.smsc.com

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101 / 147 page

High-Performance Small Form Factor Single-Chip Ethernet Controller with HP Auto-MDIX Support

Datasheet

SMSC LAN9211

101

Revision 2.9 (03-01-12)

DATASHEET

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

present, 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.

LAN9211 数据表(PDF) 101 Page - SMSC Corporation