KSZ8041NL

KSZ8041NL/RNL 10Base-T/100Base-TX Physical Layer Transceiver Revision 1.5 General Description The KSZ8041NL is a single supply 10Base-T/100Base-TX physical layer transceiver, which provides MII/RMII interfaces to transmit and receive data. A unique mixed signal design extends signaling distance while reducing power consumption. HP Auto MDI/MDI-X provides the most robust solution for eliminating the need to differentiate between crossover and straight-through cables. The KSZ8041NL represents a new level of features and performance and is an ideal choice of physical layer transceiver for 10Base-T/100Base-TX applications. The KSZ8041RNL is an enhanced RMII version of the KSZ8041NL that does not require a 50MHz system clock. It uses a 25MHz crystal for its input reference clock and outputs a 50MHz RMII reference clock to the MAC. The KSZ8041NL and KSZ8041RNL are available in 32pin, lead-free QFN packages (see Ordering Information). Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Functional Diagram KSZ8041NL TX+ 10/100 Transmitter Pulse TX- Shaper REXT Adaptive EQ RX+ Base Line Wander Correction RX- MLT3 Decoder NRZI/NRZ 10Base-T Receiver NRZ/NRZI MLT3 Encoder 4B/5B Encoder Scrambler Parallel/Serial Parallel/Serial Manchester Encoder Clock Recovery 4B/5B Decoder Descrambler Serial/Parallel Auto Negotiation Manchester Decoder Serial/Parallel MDC MDIO TX_EN TXD1 TXD0 RMII CRS_DV RXD1 RXD0 RX_ER REF_CLK INTRP XI PLL XO Power Do...