KSZ8041NL/RNL
10Base-T/100Base-TX
Physical Layer Transceiver
Data Sheet Rev. 1.4
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 32-
pin, lead-free MLF® (QFN per JDEC) packages (See
Ordering Information).
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Functional Diagram
KSZ8041NL
KSZ8041RNL
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
September 2010
M9999-090910-1.4
Micrel, Inc.
KSZ8041NL/RNL
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 (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 x 5mm) MLF
®
package
Applications
•
•
•
•
•
•
Printer
LOM
Game Console
IPTV
IP Phone
IP Set-top Box
Ordering Information
Part Number
KSZ8041NL
KSZ8041NLI (1)
KSZ8041NL AM(1)
KSZ8041MNLU
KSZ8041RNLU
KSZ8041RNL
KSZ8041RNLI (1)
Note:
1.
Contact factory for lead time.
Temperature Range
0°C to 70°C
−40°C
to 85°C
−40°C
to 85°C
−40°C
to 85°C
−40°C
to 85°C
0°C to 70°C
−40°C
to 85°C
Package
32-Pin MLF®
32-Pin MLF®
32-Pin MLF®
32-Pin MLF®
32-Pin MLF®
32-Pin MLF®
32-Pin MLF®
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Description
MII / RMII, Commercial Temperature
MII / RMII, Industrial Temperature
MII / RMII, Automotive Qualified Device
KSZ8041NL AM with MII support only.
KSZ8041NL AM with RMII support only.
RMII with 50MHz clock output, Commercial
Temperature
RMII with 50MHz clock output, Industrial
Temperature
September 2010
2
M9999-090910-1.4
Micrel, Inc.
KSZ8041NL/RNL
Revision History
Revision
1.0
1.1
Date
10/13/06
4/27/07
Summary of Changes
Data sheet created.
Added maximum MDC clock speed.
Added 40K +/-30% to note 1 of Pin Description and Strapping Options tables for internal pull-ups/pull-
downs.
Changed Model Number in Register 3h – PHY Identifier 2.
Changed polarity (swapped definition) of DUPLEX strapping pin.
Removed DUPLEX strapping pin update to Register 4h – Auto-Negotiation Advertisement bits [8, 6].
Set “Disable power saving” as the default for Register 1Fh bit [10].
Corrected LED1 (pin 31) definition for Activity in LED mode 01.
Added Symbol Error to MII/RMII Receive Error description and Register 15h – RXER Counter.
Added a 100pF capacitor on REXT (pin 10) in Pin Description table.
1.2
7/18/08
Added Automotive Qualified part number to Ordering Information.
Added maximum case temperature.
Added thermal resistance (θ
JC
).
Added chip maximum current consumption.
1.3
12/11/09
Added Automotive Qualified part number, KSZ8041NL EAM, to Ordering Information.
Changed MDIO hold time (min) from 10ns to 4ns.
Added LED drive current.
Renamed Register 3h bits [3:0] to “manufacturer’s revision number” and changed default value to
“Indicates silicon revision.”
Updated RMII output delay for CRSDV and RXD[1:0] output pins.
Added support for Asymmetric PAUSE in register 4h bit [11].
Added control bits for 100Base-TX preamble restore (register 14h bit [7]) and 10Base-T preamble
restore (register 14h bit [6]).
Changed strapping pin definition for CONFIG[2:0] = 100 from “PCS Loopback” to “MII 100Mbps
Preamble Restore.”
Corrected MII timing for t
RLAT
, t
CRS1
, t
CRS2
.
Added KSZ8041RNL device and updated entire data sheet accordingly.
1.4
01/19/10
Removed part number (KSZ8041NL EAM) from Ordering Information.
Removed chip maximum current consumption.
September 2010
3
M9999-090910-1.4
Micrel, Inc.
KSZ8041NL/RNL
Contents
General Description .............................................................................................................................................................. 1
Functional Diagram............................................................................................................................................................... 1
Features ................................................................................................................................................................................. 2
Applications........................................................................................................................................................................... 2
Ordering Information ............................................................................................................................................................ 2
Revision History.................................................................................................................................................................... 3
List of Figures........................................................................................................................................................................ 7
List of Tables ......................................................................................................................................................................... 8
Pin Configuration – KSZ8041NL .......................................................................................................................................... 9
Pin Description – KSZ8041NL............................................................................................................................................ 10
Pin Description – KSZ8041NL (continued) ....................................................................................................................... 11
Pin Description – KSZ8041NL (continued) ....................................................................................................................... 12
Pin Description – KSZ8041NL (continued) ....................................................................................................................... 13
Strapping Options – KSZ8041NL....................................................................................................................................... 14
Pin Configuration – KSZ8041RNL ..................................................................................................................................... 15
Pin Description – KSZ8041RNL ......................................................................................................................................... 16
Pin Description – KSZ8041RNL (continued) .................................................................................................................... 17
Pin Description – KSZ8041RNL (continued) .................................................................................................................... 18
Strapping Options – KSZ8041RNL .................................................................................................................................... 19
Functional Description ....................................................................................................................................................... 20
100Base-TX Transmit....................................................................................................................................................... 20
100Base-TX Receive........................................................................................................................................................ 20
PLL Clock Synthesizer...................................................................................................................................................... 20
Scrambler/De-scrambler (100Base-TX only).................................................................................................................... 20
10Base-T Transmit ........................................................................................................................................................... 20
10Base-T Receive ............................................................................................................................................................ 21
SQE and Jabber Function (10Base-T only)...................................................................................................................... 21
Auto-Negotiation ............................................................................................................................................................... 21
MII Management (MIIM) Interface .................................................................................................................................... 23
Interrupt (INTRP) .............................................................................................................................................................. 23
MII Data Interface (KSZ8041NL only) .............................................................................................................................. 23
MII Signal Definition (KSZ8041NL only) ........................................................................................................................... 24
Transmit Clock (TXC) ................................................................................................................................................... 24
Transmit Enable (TXEN) .............................................................................................................................................. 24
Transmit Data [3:0] (TXD[3:0]) ..................................................................................................................................... 24
Receive Clock (RXC).................................................................................................................................................... 24
Receive Data Valid (RXDV).......................................................................................................................................... 25
Receive Data [3:0] (RXD[3:0]) ...................................................................................................................................... 25
Receive Error (RXER) .................................................................................................................................................. 25
Carrier Sense (CRS) .................................................................................................................................................... 25
Collision (COL) ............................................................................................................................................................. 25
September 2010
4
M9999-090910-1.4
Micrel, Inc.
KSZ8041NL/RNL
Reduced MII (RMII) Data Interface................................................................................................................................... 25
RMII Signal Definition ....................................................................................................................................................... 26
Reference Clock (REF_CLK) ....................................................................................................................................... 26
Transmit Enable (TX_EN) ............................................................................................................................................ 26
Transmit Data [1:0] (TXD[1:0]) ..................................................................................................................................... 26
Carrier Sense/Receive Data Valid (CRS_DV).............................................................................................................. 27
Receive Data [1:0] (RXD[1:0]) ...................................................................................................................................... 27
Receive Error (RX_ER) ................................................................................................................................................ 27
Collision Detection........................................................................................................................................................ 27
RMII Signal Diagram......................................................................................................................................................... 27
HP Auto MDI/MDI-X.......................................................................................................................................................... 28
Straight Cable ............................................................................................................................................................... 29
Crossover Cable........................................................................................................................................................... 29
Power Management.......................................................................................................................................................... 30
Power Saving Mode ..................................................................................................................................................... 30
Power Down Mode ....................................................................................................................................................... 30
Reference Clock Connection Options .............................................................................................................................. 30
Reference Circuit for Power and Ground Connections .................................................................................................... 31
Register Map........................................................................................................................................................................ 32
Register Description ........................................................................................................................................................... 32
Register Description (continued) ...................................................................................................................................... 33
Register Description (continued) ...................................................................................................................................... 34
Register Description (continued) ...................................................................................................................................... 35
Register Description (continued) ...................................................................................................................................... 36
Register Description (continued) ...................................................................................................................................... 37
Register Description (continued) ...................................................................................................................................... 38
Register Description (continued) ...................................................................................................................................... 39
Absolute Maximum Ratings
(1)
............................................................................................................................................ 40
Operating Ratings
(2)
............................................................................................................................................................ 40
Electrical Characteristics
(4)
................................................................................................................................................ 40
Electrical Characteristics
(4)
(continued)............................................................................................................................ 41
Timing Diagrams ................................................................................................................................................................. 42
MII SQE Timing (10Base-T) ............................................................................................................................................. 42
MII Transmit Timing (10Base-T) ....................................................................................................................................... 43
MII Receive Timing (10Base-T) ........................................................................................................................................ 44
MII Transmit Timing (100Base-TX) .................................................................................................................................. 45
MII Receive Timing (100Base-TX) ................................................................................................................................... 46
RMII Timing....................................................................................................................................................................... 47
Auto-Negotiation Timing ................................................................................................................................................... 48
MDC/MDIO Timing ........................................................................................................................................................... 49
Reset Timing..................................................................................................................................................................... 50
September 2010
5
M9999-090910-1.4
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