KSZ9021RL Ver la hoja de datos (PDF) - Micrel

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KSZ9021RL

Gigabit Ethernet Transceiver with RGMII Support

Micrel 

Micrel, Inc.

KSZ9021RL/RN

Contents

Pin Configuration – KSZ9021RL .......................................................................................................................................... 8

Pin Description – KSZ9021RL.............................................................................................................................................. 9

Strapping Options – KSZ9021RL....................................................................................................................................... 14

Pin Configuration – KSZ9021RN........................................................................................................................................ 15

Pin Description – KSZ9021RN ........................................................................................................................................... 16

Strapping Options – KSZ9021RN ...................................................................................................................................... 21

Functional Overview ........................................................................................................................................................... 22

Functional Description: 10Base-T/100Base-TX Transceiver .......................................................................................... 23

100Base-TX Transmit....................................................................................................................................................... 23

100Base-TX Receive ........................................................................................................................................................ 23

Scrambler/De-scrambler (100Base-TX only).................................................................................................................... 23

10Base-T Transmit ........................................................................................................................................................... 23

10Base-T Receive ............................................................................................................................................................ 23

Functional Description: 1000Base-T Transceiver............................................................................................................ 24

Analog Echo Cancellation Circuit ..................................................................................................................................... 24

Automatic Gain Control (AGC) ......................................................................................................................................... 24

Analog-to-Digital Converter (ADC) ................................................................................................................................... 24

Timing Recovery Circuit.................................................................................................................................................... 25

Adaptive Equalizer ............................................................................................................................................................ 25

Trellis Encoder and Decoder ............................................................................................................................................ 25

Functional Description: 10/100/1000 Transceiver Features ........................................................................................... 25

Auto MDI/MDI-X................................................................................................................................................................ 25

Pair- Swap, Alignment, and Polarity Check...................................................................................................................... 26

Wave Shaping, Slew Rate Control and Partial Response................................................................................................ 26

PLL Clock Synthesizer...................................................................................................................................................... 26

Auto-Negotiation ................................................................................................................................................................. 26

RGMII Interface .................................................................................................................................................................... 28

RGMII Signal Definition .................................................................................................................................................... 29

RGMII Signal Diagram ...................................................................................................................................................... 29

RGMII Pad Skew Registers .............................................................................................................................................. 30

RGMII In-band Status ....................................................................................................................................................... 32

MII Management (MIIM) Interface....................................................................................................................................... 32

Interrupt (INT_N).................................................................................................................................................................. 32

LED Mode............................................................................................................................................................................. 33

Single LED Mode .............................................................................................................................................................. 33

Tri-color Dual LED Mode .................................................................................................................................................. 33

NAND Tree Support ............................................................................................................................................................ 34

Power Management ............................................................................................................................................................ 35

Power Saving Mode.......................................................................................................................................................... 35

Software Power Down Mode ............................................................................................................................................ 35

Chip Power Down Mode ................................................................................................................................................... 35

Register Map........................................................................................................................................................................ 35

February 13, 2014

4

Revision 1.2

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