TC9205M-DS-R02 datasheet(44/51 Pages) ETC1

Nome de Peças	TC9205M-DS-R02

Descrição Electrónicos	5-Port 10/100/1000 Smart Ethernet Switch

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Fabricante Electrônico	ETC1 [List of Unclassifed Manufacturers]

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TC9205M

Preliminary Data Sheet

10.4

Writing / Reading PHY management registers via EEPROM interface

The following set of registers allows read/write operations through MDIO interface for direct managing of

physical layer devices. This feature is available through virtual EEPROM mode.

10.4.1

Data Write Register

Confidential.

44/51

July 30, 2003

TC9205M-DS-R03

- Address: 70h, 71h

7 6 5 4 3 2 1 0

DataW riteReg

DataWriteReg

15 14 13 12 11 10 9 8

Bit(s)

Field

Description

15 - 0

DataWriteReg

MDIO Data Write Register

DataWriteReg

– Contains a 16 bit data word used to write a PHY management register.

10.4.2

Physical Layer Device Address Register

- Address: 72h

7 6 5 4 3 2 1 0

DeviceAddress(4-0)

not used

PhyAddress

Bit(s)

Field

Description

4 – 0

DeviceAddress

Physical layer device address register

7 – 5

not used

DeviceAddress

– Contains a 5-bit word used as device address in MDIO operations.

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