AR8031-AL1B データシートの表示（PDF） - Unspecified

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AR8031-AL1B

AR8031 Integrated 10/100/1000 Mbps Ethernet Transceiver

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Table of Contents

General Description ........................................ 1

Features ............................................................ 1

AR8031 Functional Block Diagram .............. 2

Revision History ............................................. 3

Table of Contents ............................................ 5

1 Pin Descriptions ............................ 9

1.1 Power-on Strapping Pins ...................... 13

1.1.1 Mode Definition .......................... 14

2 Functional Description ............... 15

2.2 Modes of Operation ............................... 16

2.2.1 Operation Mode, Copper .......... 16

2.2.2 Operation Mode, Fiber ............... 16

2.2.3 Operation Mode, Media Converter

17

2.2.4 Operation Mode, Auto-Media

Detect (Combo) ........................... 17

2.3 Transmit Functions ................................ 18

2.4 Receive Functions .................................. 18

2.4.1 Decoder Modes ........................... 18

2.4.2 Analog to Digital Converter ...... 18

2.4.3 Echo Canceller ............................. 18

2.4.4 NEXT Canceller .......................... 18

2.4.5 Baseline Wander Canceller ....... 18

2.4.6 Digital Adaptive Equalizer ....... 18

2.4.7 Auto-Negotiation ........................ 19

2.4.8 Smartspeed Function ................. 19

2.4.9 Automatic MDI/MDIX Crossover

19

2.4.10 Polarity Correction ..................... 19

2.5 Loopback Modes .................................... 19

2.5.1 Digital Loopback ......................... 19

2.5.2 External Cable Loopback ........... 19

2.5.3 Remote PHY Loopback .............. 20

2.6 Cable Diagnostic Test ............................ 20

2.7 Fiber Mode Support .............................. 20

2.7.1 IEEE 802.3 Remote Fault Indication

Support ......................................... 20

2.7.2 Fault Propagation ....................... 21

2.8 LED Interface .......................................... 21

2.9 Power Supplies ....................................... 22

2.10 Management Interface .......................... 24

2.11 Timing Sychronization ......................... 26

2.11.1 Synchronous Ethernet — Physical

Layer Timing Synchronization . 29

2.12 Atheros Green EthosTM ...................... 30

2.12.1 Low Power Modes ..................... 30

2.12.2 Shorter Cable Power Mode ....... 30

2.12.3 Hibernation Mode ...................... 30

2.13 IEEE 802.3az and Energy Efficient

Ethernet 30

2.14 IEEE 802.3az Energy Efficient Ethernet 30

2.14.1 IEEE 802.3az LPI Mode .............. 30

2.14.2 Atheros SmartEEE ...................... 31

2.15 Wake On LAN (WoL) .......................... 32

3 Electrical Characteristics ............33

3.1 Absolute Maximum Ratings ................ 33

3.2 Recommended Operating Conditions 33

3.3 RGMII Characteristics ........................... 34

3.4 SerDes and SGMII Characteristics ...... 37

3.5 MDIO Timing ......................................... 39

3.6 MDIO/MDC DC Characteristic .......... 39

3.7 Clock Characteristics ............................. 40

3.8 Power Pin Current Consumption ....... 41

3.9 Typical Power Consumption Parameters

41

3.10 Power-on Sequence, Reset and Clock 44

3.10.1 Power-on Sequence .................... 44

3.10.2 Reset and Clock Timing ............. 44

3.11 Digital Pin Design Guide ..................... 44

4 Register Descriptions ..................47

4.1 Register Summary ................................. 47

4.2 MII Registers .......................................... 47

4.2.1 Control Register — Copper Page 49

4.2.2 Control — Fiber Page ................. 50

4.2.3 Status Register — Copper Page 51

4.2.4 Status Register — Fiber Page .... 53

4.2.5 PHY Identifier ............................. 54

4.2.6 PHY Identifier2 ........................... 55

4.2.7 Auto-Negotiation Advertisement

Register — Copper Page ........... 55

4.2.8 Auto-Negotiation Advertisement

Register — Fiber Page ................ 57

4.2.9 Link Partner Ability Register —

Atheros Communications, Inc.

COMPANY CONFIDENTIAL

AR8031 Integrated 10/100/1000 Mbps Ethernet Transceiver • 5

August 2011 • 5

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