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KSZ8041NL
10Base-T/100Base-TX Physical Layer Transceiver
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. An 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 KSZ8041NL comes in a 32-pin, lead-free MLF® (QFN per JDEC) package (See Ordering Information). Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com.
Functional Diagram
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 • http://www.micrel.com
October 2006
M9999-102406-1.0
Micrel, Inc.
KSZ8041NL
Features
• Single-chip 10Base-T/100Base-TX physical layer solution • Fully compliant to IEEE 802.3u Standard • Low power CMOS design, power consumption of <180mW • HP auto MDI/MDI-X for reliable detection and correction 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 • RMII interface support with external 50MHz system clock • MIIM (MDC/MDIO) management bus for 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 x 5mm) MLF® package
Applications
• • • • • • Printer LOM Game Console IPTV IP Phone IP Set-top Box
Ordering Information
Part Number KSZ8041NL KSZ8041NLI Temp. Range 0°C to 70°C -40°C to 85°C Package 32-Pin MLF 32-Pin MLF
® ®
Lead Finish Pb-Free Pb-Free
October 2006
2
M9999-102406-1.0
Micrel, Inc.
KSZ8041NL
Revision History
Revision 1.0 Date 10/13/06 Summary of Changes Data sheet created
October 2006
3
M9999-102406-1.0
Micrel, Inc.
KSZ8041NL
Contents
Pin Configuration .................................................................................................................................................................. 8 Pin Description ...................................................................................................................................................................... 9 Strapping Options............................................................................................................................................................... 12 Functional Description ....................................................................................................................................................... 13 100Base-TX Transmit....................................................................................................................................................... 13 100Base-TX Receive........................................................................................................................................................ 13 PLL Clock Synthesizer...................................................................................................................................................... 13 Scrambler/De-scrambler (100Base-TX only).................................................................................................................... 13 10Base-T Transmit ........................................................................................................................................................... 13 10Base-T Receive ............................................................................................................................................................ 13 SQE and Jabber Function (10Base-T only)...................................................................................................................... 14 Auto-Negotiation ............................................................................................................................................................... 14 MII Management (MIIM) Interface .................................................................................................................................... 16 Interrupt (INTRP) .............................................................................................................................................................. 16 MII Data Interface ............................................................................................................................................................. 16 MII Signal Definition.......................................................................................................................................................... 17 Transmit Clock (TXC) ...................................................................................................................................................................17 Transmit Enable (TXEN)..............................................................................................................................................................17 Transmit Data [3:0] (TXD[3:0]) ...................................................................................................................................................17 Receive Clock (RXC) .....................................................................................................................................................................17 Receive Data Valid (RXDV) ..........................................................................................................................................................18 Receive Data [3:0] (RXD[3:0])......................................................................................................................................................18 Receive Error (RXER)...................................................................................................................................................................18 Carrier Sense (CRS) ......................................................................................................................................................................18 Collision (COL) .............................................................................................................................................................................18 Reduced MII (RMII) Data Interface................................................................................................................................... 18 RMII Signal Definition ....................................................................................................................................................... 19 Reference Clock (REF_CLK) .......................................................................................................................................................19 Transmit Enable (TX_EN)............................................................................................................................................................19 Transmit Data [1:0] (TXD[1:0]) ...................................................................................................................................................19 Carrier Sense/Receive Data Valid (CRS_DV) ..............................................................................................................................19 Receive Data [1:0] (RXD[1:0])......................................................................................................................................................19 Receive Error (RX_ER).................................................................................................................................................................19 Collision Detection ........................................................................................................................................................................20 HP Auto MDI/MDI-X.......................................................................................................................................................... 20 Straight Cable ................................................................................................................................................................................20 Crossover Cable .............................................................................................................................................................................21 Power Management.......................................................................................................................................................... 22 Power Saving Mode.......................................................................................................................................................................22 Power Down Mode ........................................................................................................................................................................22 Reference Clock Connection Options............................................................................................................................... 22 October 2006 4 M9999-102406-1.0
Micrel, Inc.
KSZ8041NL
Reference Circuit for Power and Ground Connections .................................................................................................... 23 Register Map.....................................................
