KSZ8041NL AM Microchip

KSZ8041NL/RNL 10Base-T/100Base-TX Physical Layer Transceiver Revision 1.5 General Description The KSZ8041RNL is an enhanced RMII version of the The KSZ8041NL is a single supply 10Base-T/100Base-TX KSZ8041NL that does not require a 50MHz system clock. physical layer transceiver, which provides MII/RMII It uses a 25MHz crystal for its input reference clock and interfaces to transmit and receive data. A unique mixed outputs a 50MHz RMII reference clock to the MAC. signal design extends signaling distance while reducing power consumption. The KSZ8041NL and KSZ8041RNL are available in 32- pin, lead-free QFN packages (see Ordering Information). HP Auto MDI/MDI-X provides the most robust solution for eliminating the need to differentiate between crossover Datasheets and support documentation are available on and straight-through cables. Micrels web site at: www.micrel.com. 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. Functional Diagram 4B/5B Encoder NRZ/NRZI MDC Scrambler MLT3 Encoder MDIO 10/100 TX+ Parallel/Serial Transmitter Pulse TX- TX EN Shaper TXD1 Parallel/Serial TXD0 Manchester Encoder REXT CRS DV RMII RXD1 Adaptive EQ RXD0 Base Line 4B/5B Decoder RX+ Clock Wander Correction Descrambler RX ER Recovery RX- MLT3 Decoder Serial/Parallel NRZI/NRZ REF CLK Auto Negotiation 10Base-T Manchester Decoder Receiver Serial/Parallel INTRP Power Down RST Power Saving XI LED LED0 PLL XO Driver LED1 KSZ8041NL KSZ8041RNL Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. KSZ8041NL/RNL Applications Features Printer Single-chip 10Base-T/100Base-TX physical layer solution LOM Fully compliant to IEEE 802.3u standard Game console Low power CMOS design, power consumption of IPTV <180mW IP phone HP auto MDI/MDI-X for reliable detection and correction IP set-top box for straight-through and crossover cables with disable and enable option Robust operation over standard cables Power down and power saving modes MII interface support (KSZ8041NL only) RMII interface support with external 50MHz system clock (KSZ8041NL only) RMII interface support with 25MHz crystal/clock input and 50MHz reference clock output to MAC (KSZ8041RNL only) MIIM (MDC/MDIO) management bus to 6.25MHz for rapid PHY register configuration Interrupt pin option Programmable LED outputs for link, activity and speed ESD rating (6kV) Single power supply (3.3V) Built-in 1.8V regulator for core Available in 32-pin 5mm 5mm QFN package February 4, 2015 Revision 1.5 2