KS8721B/BT
Micrel
KS8721B/BT
2.5V 10/100BasTX/FX MII Physical Layer Transceiver Rev. 2.2
General Description
Operating at 2.5 volts to meet low voltage and low power requirements, the KS8721B/BT is a 10BaseT/100BaseTX/ FX Physical Layer Transceiver, which provides an MII to transmit and receive data. It contains the 10BaseT Physical Medium Attachment (PMA), Physical Medium Dependent (PMD), and Physical Coding Sub-layer (PCS) functions. Moreover, the KS8721B/BT has on-chip 10BaseT output filtering, which eliminates the need for external filters and allows a single set of line magnetics to be used to meet requirements for both 100BaseTX and 10BaseT. The KS8721B/BT can automatically configure itself for 100 or 10 Mbps and full or half duplex operation, using on-chip AutoNegotiation algorithm. It is an ideal choice of physical layer transceiver for 100BaseTX/10BaseT applications. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com.
Features
• Single chip 100BaseTX/100BaseFX/10BaseT physical layer solution • 2.5V CMOS design, power consumption
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