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KSZ8091MLX 데이터시트 PDF




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부품번호 KSZ8091MLX 기능
기능 10Base-T/100Base-TX Physical Layer Transceiver
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KSZ8091MLX 데이터시트, 핀배열, 회로
KSZ8091MLX
10Base-T/100Base-TX
Physical Layer Transceiver
Revision 1.2
General Description
The KSZ8091MLX is a single-supply 10Base-T/100Base-
TX Ethernet physical layer transceiver for transmission
and reception of data over standard CAT-5 unshielded
twisted pair (UTP) cable.
The KSZ8091MLX is a highly-integrated, compact solution.
It reduces board cost and simplifies board layout by using
on-chip termination resistors for the differential pairs, by
integrating a low-noise regulator to supply the 1.2V core,
and by offering a flexible 1.8/2.5/3.3V digital I/O interface.
The KSZ8091MLX offers the Media Independent Interface
(MII) for direct connection with MII-compliant Ethernet
MAC processors and switches.
Energy Efficient Ethernet (EEE) provides further power
saving during idle traffic periods and Wake-on-LAN (WOL)
provides a mechanism for the KSZ8091MLX to wake up a
system that is in standby power mode.
The KSZ8091MLX is available in the 48-pin, lead-free
LQFP package (see Ordering Information).
Datasheets and support documentation are available on
website at: www.micrel.com.
Features
Single-chip 10Base-T/100Base-TX IEEE 802.3
compliant Ethernet transceiver
MII interface support
Back-to-back mode support for a 100Mbps copper
repeater
MDC/MDIO management interface for PHY register
configuration
Programmable interrupt output
LED outputs for link, activity and speed status indication
On-chip termination resistors for the differential pairs
Baseline wander correction
HP Auto MDI/MDI-X to reliably detect and correct
straight-through and crossover cable connections with
disable and enable option
Auto-Negotiation to automatically select the highest link-
up speed (10/100Mbps) and duplex (half/full)
Energy Efficient Ethernet (EEE) support with low-power
idle (LPI) mode and clock stoppage for 100Base TX and
transmit amplitude reduction with 10Base-Te option
Wake-On-LAN (WOL) support with either magic packet,
link status change, or robust custom-packet detection
LinkMD® TDR-based cable diagnostics to identify faulty
copper cabling
Functional Diagram
LinkMD is a registered trademark of Micrel, 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
August 31, 2015
Revision 1.2




KSZ8091MLX pdf, 반도체, 판매, 대치품
Micrel, Inc.
KSZ8091MLX
Contents
List of Figures.......................................................................................................................................................................... 6
List of Tables ........................................................................................................................................................................... 7
Pin Configuration..................................................................................................................................................................... 8
Pin Description ........................................................................................................................................................................ 9
Strapping Options ................................................................................................................................................................. 13
Functional Description: 10Base-T/100Base-TX Transceiver ................................................................................................ 15
100Base-TX Transmit........................................................................................................................................................ 15
100Base-TX Receive......................................................................................................................................................... 15
Scrambler/De-Scrambler (100Base-TX Only) ................................................................................................................... 15
10Base-T Transmit ............................................................................................................................................................ 15
10Base-T Receive ............................................................................................................................................................. 16
SQE and Jabber Function (10Base-T Only)...................................................................................................................... 16
PLL Clock Synthesizer ...................................................................................................................................................... 16
Auto-Negotiation................................................................................................................................................................ 16
MII Data Interface.................................................................................................................................................................. 18
MII Signal Definition........................................................................................................................................................... 18
Transmit Clock (TXC) .................................................................................................................................................... 18
Transmit Enable (TXEN)................................................................................................................................................ 18
Transmit Data[3:0] (TXD[3:0])........................................................................................................................................ 19
Transmit Error (TXER) ................................................................................................................................................... 19
Receive Clock (RXC) ..................................................................................................................................................... 19
Receive Data Valid (RXDV) ........................................................................................................................................... 19
Receive Data[3:0] (RXD[3:0]) ........................................................................................................................................ 19
Receive Error (RXER).................................................................................................................................................... 19
Carrier Sense (CRS)...................................................................................................................................................... 20
Collision (COL)............................................................................................................................................................... 20
MII Signal Diagram ............................................................................................................................................................ 20
Back-to-Back Mode – 100Mbps Copper Repeater ............................................................................................................... 21
MII Back-to-Back Mode ..................................................................................................................................................... 21
MII Management (MIIM) Interface......................................................................................................................................... 22
Interrupt (INTRP)................................................................................................................................................................... 23
HP Auto MDI/MDI-X .............................................................................................................................................................. 23
Straight Cable .................................................................................................................................................................... 23
Crossover Cable................................................................................................................................................................ 24
Loopback Mode..................................................................................................................................................................... 24
Local (Digital) Loopback .................................................................................................................................................... 24
Remote (Analog) Loopback............................................................................................................................................... 25
LinkMD® Cable Diagnostic .................................................................................................................................................... 27
NAND Tree Support .............................................................................................................................................................. 27
NAND Tree I/O Testing ..................................................................................................................................................... 28
Power Management .............................................................................................................................................................. 29
Power-Saving Mode .......................................................................................................................................................... 29
Energy-Detect Power-Down Mode.................................................................................................................................... 29
Power-Down Mode ............................................................................................................................................................ 29
Slow-Oscillator Mode......................................................................................................................................................... 29
Efficient Ethernet (EEE) ........................................................................................................................................................ 30
Transmit Direction Control (MAC-to-PHY) ........................................................................................................................ 30
Receive Direction Control (PHY-to-MAC) ......................................................................................................................... 31
Registers Associated with EEE ......................................................................................................................................... 31
August 31, 2015
4
Revision 1.2

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KSZ8091MLX 전자부품, 판매, 대치품
Micrel, Inc.
KSZ8091MLX
List of Tables
Table 1. MII Signal Definition ............................................................................................................................................. 18
Table 2. MII Signal Connection for MII Back-to-Back Mode (100Base-TX Copper Repeater).......................................... 21
Table 3. MII Management Frame Format for the KSZ8091MLX ....................................................................................... 22
Table 4. MDI/MDI-X Pin Definition ..................................................................................................................................... 23
Table 5. NAND Tree Test Pin Order for KSZ8091MLX ..................................................................................................... 28
Table 6. KSZ8091MLX Power Pin Description .................................................................................................................. 34
Table 7. Typical Current/Power Consumption (VDDA_3.3 = 3.3V, VDDIO = 3.3V) .......................................................... 35
Table 8. Typical Current/Power Consumption (VDDA_3.3 = 3.3V, VDDIO = 2.5V) .......................................................... 35
Table 9. Typical Current/Power Consumption (VDDA_3.3 = 3.3V, VDDIO = 1.8V) .......................................................... 36
Table 10. Standard Registers Supported by KSZ8091MLX ................................................................................................ 37
Table 11. MMD Registers Supported by KSZ8091MLX ...................................................................................................... 38
Table 12. Portal Registers (Access to Indirect MMD Registers).......................................................................................... 49
Table 13. MII SQE Timing (10Base-T) Parameters ............................................................................................................. 58
Table 14. MII Transmit Timing (10Base-T) Parameters ...................................................................................................... 59
Table 15. MII Receive Timing (10Base-T) Parameters ....................................................................................................... 60
Table 16. MII Transmit Timing (100Base-TX) Parameters .................................................................................................. 61
Table 17. MII Receive Timing (100Base-TX) Parameters ................................................................................................... 62
Table 18. Auto-Negotiation Fast Link Pulse (FLP) Timing Parameters ............................................................................... 63
Table 19. MDC/MDIO Timing Parameters ........................................................................................................................... 64
Table 20. Power-Up/Reset Timing Parameters ................................................................................................................... 65
Table 21. 25MHz Crystal / Reference Clock Selection Criteria ........................................................................................... 68
Table 22. Magnetics Selection Criteria ................................................................................................................................ 70
Table 23. Compatible Single-Port 10/100 Magnetics .......................................................................................................... 70
August 31, 2015
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KSZ8091MLX

10Base-T/100Base-TX Physical Layer Transceiver

Micrel Semiconductor
Micrel Semiconductor

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