Homepage > Products > Ethernet ICs > PHY's
Ethernet Transceivers-KS8001L KS8721BL KS8721B KS8721BT KS8721CL
The Ethernet product line has continued to evolve and grow with the market. Micrel's PHYs are known for robust performance, interoperability and low power.
The table below will help direct you to the correct PHY for your application.
| KSxxxx = Standard Lead Finish |
| KSZxxxx = Pb-Free Lead Finish |
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P/N |
Product Brief |
Data Sheet |
HW Design Kit |
SW Design Kit |
Distributor
Inventory
of Parts
and EVB's |
|
LinkMD ® Cable Diagnostics |
Temperature |
Supply Voltage |
Copper |
Fiber |
Package |
| MII |
RMII |
SMII |
GMII |
RGMII |
KSZ9021GQ
NEW! * |
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C, I |
3.3V |
10/
100/
1000 |
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128-QFP |
KSZ9021RL
NEW! * |
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C, I |
3.3V |
10/
100/
1000 |
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64-E-LQFP |
KSZ9021GN
NEW! * |
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C, I |
3.3V |
10/
100/
1000 |
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64-QFN |
KSZ9021RN
NEW! * |
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C, I |
3.3V |
10/
100/
1000 |
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48-QFN |
KSZ8051MLL
NEW! *
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C, I |
3.3V |
10/100 |
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48-LQFP |
KSZ8051MNL
NEW! *
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C, I |
3.3V |
10/100 |
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32-QFN |
KSZ8051RNL
NEW! *
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C, I |
3.3V |
10/100 |
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32-QFN |
KSZ8041NL
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A, C, I |
3.3V |
10/100 |
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32-MLF |
KSZ8041RNL
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C, I |
3.3V |
10/100 |
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32-MLF |
KSZ8041NLJ
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J |
3.3V |
10/100 |
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32-MLF |
KSZ8041TL
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C, I |
3.3V |
10/100 |
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48-TQFP |
KSZ8041MLL
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C, I |
3.3V |
10/100 |
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48-TQFP |
KSZ8041FTL
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C, I |
3.3V |
10/100 |
100FX |
48-TQFP |
| KSZ8001L |
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C, I |
3.3V |
10/100 |
100FX |
48-LQFP |
| KSZ8001S |
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C, I |
3.3V, 1.8V |
10/100 |
100FX |
48-SSOP |
| KSZ8001SL |
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C |
3.3V |
10/100 |
100FX |
48-SSOP |
| KSZ8721B |
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C, I |
3.3V, 2.5V |
10/100 |
100FX |
48-SSOP |
| KSZ8721BT |
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C |
3.3V, 2.5V |
10/100 |
100FX |
48-TQFP |
| KSZ8721BL |
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C, I |
3.3V |
10/100 |
100FX |
48-LQFP |
| KSZ8721SL |
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C, I |
3.3V |
10/100 |
100FX |
48-SSOP |
| KSZ8721CL** |
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C |
3.3V |
10/100 |
100FX |
48-LQFP |
C = Commerical (0°C – 70°C) ; I = Industrial (-40°C – +85°C) ; A = Automotive (-40°C – +85°C) ; J = Extended High Temperature (-40°C – +125°C)
* Hardware Design kit contains Errata, Evaluation board Schematics in .pdf and ORCAD (.dsn) files, Gerber files, Application Notes, Eval Board Users guides and other relevant design documents.
** KSZ8721CL offers separate pins for Link and Activity LEDs.
PHYs (Physical Layer Devices) connect via an MII (Media Independent Interface) to the Ethernet MAC (Media Access Controller). The MII interface is defined by the IEEE 802.3 standard so any manufacturers PHY can work with any MAC. Many processors contain an Ethernet controller or MAC, connecting a PHY via the MII interface is straight forward and simple. Other interfaces such as RMII (Reduced MII) and SMII (Serial MII) can be used, Micrel offers PHYs that support all of these interfaces.
Ethernet PHYs can be monitored and controlled via an MDIO (Management Data Input/Output) interface. Each PHY has an MDIO interface as defined by IEEE 802.3 with common register locations. Functions such as loop-back, power down, speed, duplex selection are among the many standard options available in the MDIO registers.
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