KSZ8041NL/RNL
10Base-T/100Base-TX
Physical Layer Transceiver
Data Sheet Rev. 1.4
General Description performance and is an ideal choice of physical layer
transceiver for 10Base-T/100Base-TX applications.
The KSZ8041NL is a single supply 10Base-T/100Base-TX
Physical Layer Transceiver, which provides MII/RMII The KSZ8041RNL is an enhanced RMII version of the
interfaces to transmit and receive data. A unique mixed KSZ8041NL that does not require a 50MHz system clock.
signal design extends signaling distance while reducing It uses a 25MHz crystal for its input reference clock and
power consumption. outputs a 50MHz RMII reference clock to the MAC.
HP Auto MDI/MDI-X provides the most robust solution for The KSZ8041NL and KSZ8041RNL are available in 32-
eliminating the need to differentiate between crossover pin, lead-free MLF� (QFN per JDEC) packages (See
and straight-through cables. Ordering Information).
The KSZ8041NL represents a new level of features and Data sheets and support documentation can be found on
Functional Diagram KSZ8041RNL
KSZ8041NL
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
Micrel Inc. � 2180 Fortune Drive � San Jose, CA 95131 � USA � tel +1 (408) 944-0800 � fax + 1 (408) 474-1000 �
September 2010 M9999-090910-1.4
Micrel, Inc. KSZ8041NL/RNL
Features Applications
� Single-chip 10Base-T/100Base-TX physical layer � Printer
solution � LOM
� Game Console
� Fully compliant to IEEE 802.3u Standard � IPTV
� Low power CMOS design, power consumption of � IP Phone
� IP Set-top Box
