KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 4

• Manufacturer Part Number: KSZ9021GN TR
• Description: Specifications: Number of Drivers/Receivers: 8/8 ; Type: Transceiver ; Voltage - Supply: 3.135 V ~ 3.465 V ; Package / Case: 64-VFQFN Exposed Pad ; Packaging: Tape & Reel (TR) ; Protocol: Gigabit Ethernet ; Lead Free Status: Lead Free ; RoHS Stat
• Manufacturer: Micrel Inc

Micrel, Inc.
Contents
Pin Configuration ............................................................................................................................................................... 8
Pin Description ................................................................................................................................................................... 9
Strapping Options ............................................................................................................................................................ 14
Functional Overview ........................................................................................................................................................ 15
Functional Description: 10Base-T/100Base-TX Transceiver ...................................................................................... 16
Functional Description: 1000Base-T Transceiver........................................................................................................ 17
Functional Description: Additional 10/100/1000 PHY Features.................................................................................. 18
Auto-Negotiation .............................................................................................................................................................. 19
GMII Interface.................................................................................................................................................................... 21
MII Interface ...................................................................................................................................................................... 23
MII Management (MIIM) Interface.................................................................................................................................... 25
Interrupt (INT_N)............................................................................................................................................................... 25
LED Mode.......................................................................................................................................................................... 25
NAND Tree Support ......................................................................................................................................................... 27
Power Management ......................................................................................................................................................... 28
Register Map..................................................................................................................................................................... 29
Register Description ........................................................................................................................................................ 30
September 2010
100Base-TX Transmit.................................................................................................................................................... 16
100Base-TX Receive..................................................................................................................................................... 16
Scrambler/De-scrambler (100Base-TX only)................................................................................................................. 16
10Base-T Transmit ........................................................................................................................................................ 16
10Base-T Receive ......................................................................................................................................................... 16
Analog Echo Cancellation Circuit .................................................................................................................................. 17
Automatic Gain Control (AGC) ...................................................................................................................................... 17
Analog-to-Digital Converter (ADC) ................................................................................................................................ 17
Timing Recovery Circuit................................................................................................................................................. 18
Adaptive Equalizer ......................................................................................................................................................... 18
Trellis Encoder and Decoder ......................................................................................................................................... 18
Auto MDI/MDI-X............................................................................................................................................................. 18
Pair- Swap, Alignment, and Polarity Check................................................................................................................... 19
Wave Shaping, Slew Rate Control and Partial Response............................................................................................. 19
PLL Clock Synthesizer................................................................................................................................................... 19
GMII Signal Definition .................................................................................................................................................... 22
GMII Signal Diagram ..................................................................................................................................................... 22
MII Signal Definition....................................................................................................................................................... 24
MII Signal Diagram ........................................................................................................................................................ 24
Single LED Mode ........................................................................................................................................................... 26
Tri-color Dual LED Mode ............................................................................................................................................... 26
Power Saving Mode....................................................................................................................................................... 28
Software Power Down Mode ......................................................................................................................................... 28
Chip Power Down Mode ................................................................................................................................................ 28
IEEE Defined Registers ................................................................................................................................................. 30
Vendor Specific Registers ............................................................................................................................................. 36
Extended Registers ....................................................................................................................................................... 39
4
M9999-091010-1.1
KSZ9021GN