KSZ8041NLJ_10 MICREL [Micrel Semiconductor], KSZ8041NLJ_10 Datasheet
KSZ8041NLJ_10
Related parts for KSZ8041NLJ_10
KSZ8041NLJ_10 Summary of contents
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General Description The KSZ8041NLJ is the industrial version of the KSZ8041NL that operates over the extended temperature o o range of - +125 single-supply 10Base- T/100Base-TX Physical Layer Transceiver, which provides MII/RMII interfaces to ...
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Micrel, Inc. 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 ...
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Micrel, Inc. Contents Pin Configuration .................................................................................................................................................................. 6 Pin Description ...................................................................................................................................................................... 7 Strapping Options ............................................................................................................................................................... 10 Functional Description ....................................................................................................................................................... 11 100Base-TX Transmit....................................................................................................................................................... 11 100Base-TX Receive........................................................................................................................................................ 11 PLL Clock Synthesizer...................................................................................................................................................... 11 Scrambler/De-scrambler (100Base-TX only).................................................................................................................... 11 10Base-T Transmit ........................................................................................................................................................... 11 10Base-T Receive ............................................................................................................................................................ ...
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Micrel, Inc. Reference Circuit for Power and Ground Connections .................................................................................................... 21 Register Map........................................................................................................................................................................ 22 Register Description ........................................................................................................................................................... 22 (1) Absolute Maximum Ratings ............................................................................................................................................ 29 (2) Operating Ratings ............................................................................................................................................................ 29 Electrical Characteristics ................................................................................................................................................... 29 Timing Diagrams ................................................................................................................................................................. 31 MII SQE Timing ...
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Micrel, Inc. List of Figures Figure 1. Auto-Negotiation Flow Chart................................................................................................................................. 13 Figure 2. Typical Straight Cable Connection ....................................................................................................................... 18 Figure 3. Typical Crossover Cable Connection ................................................................................................................... 19 Figure 4. 25MHz Crystal / Oscillator Reference Clock for MII Mode ................................................................................... 20 ...
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Micrel, Inc. List of Tables Table 1. MII Management Frame Format ............................................................................................................................ 14 Table 2. MII Signal Definition ............................................................................................................................................... 15 Table 3. RMII Signal Description.......................................................................................................................................... 17 Table 4. MDI/MDI-X Pin Definition ....................................................................................................................................... 18 Table 5. KSZ8041NLJ Power Pin Description ..................................................................................................................... ...
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Micrel, Inc. Pin Description Pin Number Pin Name Type 1 GND 2 VDDPLL_1.8 3 VDDA_3.3 4 RX- 5 RX+ 6 TX REFCLK 10 REXT 11 MDIO 12 MDC 13 RXD3 / PHYAD0 14 ...
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Micrel, Inc. Pin Number Pin Name Type 20 RXER / RX_ER / ISO 21 INTRP 22 TXC 23 TXEN / TX_EN 24 TXD0 / TXD[0] 25 TXD1 / TXD[1] 26 TXD2 27 TXD3 28 COL / CONFIG0 29 CRS / ...
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Micrel, Inc. Pin Number Pin Name Type 31 LED1 / SPEED 32 RST# PADDLE GND Notes Power supply. Gnd = Ground Input Output. I/O = Bi-directional. Ipd = Input with internal pull-down (40K ...
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Micrel, Inc. Strapping Options Pin Number Pin Name Type 15 PHYAD2 14 PHYAD1 13 PHYAD0 18 CONFIG2 29 CONFIG1 28 CONFIG0 20 ISO 31 SPEED 16 DUPLEX 30 NWAYEN Note: 1. Ipu/O = Input with internal pull-up (40K +/-30%) during ...
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Micrel, Inc. Functional Description The KSZ8041NLJ is a single 3.3V supply Fast Ethernet transceiver fully compliant with the IEEE 802.3u specification. On the media side, the KSZ8041NLJ supports 10Base-T and 100Base-TX with HP auto MDI/MDI-X for reliable detection ...
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Micrel, Inc. RX- inputs from falsely trigger the decoder. When the input exceeds the squelch limit, the PLL locks onto the incoming signal and the KSZ8041NLJ decodes a data frame. The receive clock is kept active during idle periods in ...
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Micrel, Inc. Start Auto Negotiation Force Link Setting Yes Bypass Auto Negotiation and Set Link Mode April 2010 N Parallel Operation o Attempt Auto Listen for 100BASE-TX Negotiation Idles Join Flow Link Mode Set ? Yes Link Mode Set Figure ...
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Micrel, Inc. MII Management (MIIM) Interface The KSZ8041NLJ supports the IEEE 802.3 MII Management Interface, also known as the Management Data Input / Output (MDIO) Interface. This interface allows upper-layer devices to monitor and control the state of the KSZ8041NLJ. ...
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Micrel, Inc. MII Signal Definition The following table describes the MII signals. Refer to Clause 22 of the IEEE 802.3u Specification for detailed information. Direction MII (with respect to PHY, Signal Name KSZ8041NLJ signal) TXC Output TXEN Input TXD[3:0] Input ...
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Micrel, Inc. Receive Data Valid (RXDV) RXDV is driven by the PHY to indicate that the PHY is presenting recovered and decoded nibbles on RXD[3:0]. • In 10Mbps mode, RXDV is asserted with the first nibble of the SFD (Start ...
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Micrel, Inc. RMII Signal Definition The following table describes the RMII signals. Refer to RMII Specification for detailed information. Direction RMII (with respect to PHY, Signal Name KSZ8041NLJ signal) REF_CLK Input TX_EN Input TXD[1:0] Input CRS_DV Output RXD[1:0] Output RX_ER ...
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Micrel, Inc. Collision Detection The MAC regenerates the COL signal of the MII from TX_EN and CRS_DV. HP Auto MDI/MDI-X HP Auto MDI/MDI-X configuration eliminates the confusion of whether to use a straight cable or a crossover cable between the ...
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Micrel, Inc. Crossover Cable A crossover cable connects a MDI device to another MDI device MDI-X device to another MDI-X device. The following diagram depicts a typical crossover cable connection between two switches or hubs (two MDI-X devices). ...
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Micrel, Inc. Power Management The KSZ8041NLJ offers the following power management modes: Power Saving Mode This mode is used to reduce power consumption when the cable is unplugged effect when auto-negotiation mode is enabled, cable is disconnected, ...
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Micrel, Inc. Reference Circuit for Power and Ground Connections The KSZ8041NLJ is a single 3.3V supply device with a built-in 1.8V low noise regulator. The power and ground connections are shown in the following figure and table. Ferrite Bead 22uF ...
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Micrel, Inc. Register Map Register Number (Hex) Description 0h Basic Control 1h Basic Status 2h PHY Identifier 1 3h PHY Identifier 2 4h Auto-Negotiation Advertisement 5h Auto-Negotiation Link Partner Ability 6h Auto-Negotiation Expansion 7h Auto-Negotiation Next Page 8h Link Partner ...
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Micrel, Inc. Address Name Description 0.8 Duplex Mode 1 = Full-duplex 0 = Half-duplex 0.7 Collision Test 1 = Enable COL test 0 = Disable COL test 0.6:1 Reserved 0.0 Disable 0 = Enable transmitter Transmitter 1 = Disable transmitter ...
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Micrel, Inc. Address Name Description Register 3h – PHY Identifier 2 3.15:10 PHY ID Assigned to the 19th through 24th bits of the Number Organizationally Unique Identifier (OUI). Kendin Communication’s OUI is 0010A1 (hex) 3.9:4 Model Number Six bit manufacturer’s ...
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Micrel, Inc. Address Name Description 5.9 100Base- capable capability 5.8 100Base- 100Mbps full-duplex capable Full-Duplex 100Mbps full-duplex capability 5.7 100Base- 100Mbps half-duplex capable Half-Duplex 0 = ...
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Micrel, Inc. Address Name Description 8.13 Message Page 1 = Message page 0 = Unformatted page 8.12 Acknowledge2 1 = Able to act on the information 0 = Not able to act on the information 8.11 Toggle 1 = Previous ...
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Micrel, Inc. Address Name Description 1b.7 Jabber 1 = Jabber occurred Interrupt 0 = Jabber did not occurred 1b.6 Receive Error 1 = Receive Error occurred Interrupt 0 = Receive Error did not occurred 1b.5 Page Receive 1 = Page ...
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Micrel, Inc. Address Name Description 1f:13 Pairswap 1 = Disable auto MDI/MDI-X Disable 0 = Enable auto MDI/MDI-X 1f.12 Energy Detect 1 = Presence of signal on RX+/- analog wire signal detected on RX+/- 1f.11 Force Link ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V ) ............................................... -0.5V to +2.4V DDPLL_1 ................................... -0.5V to +4.0V DDIO_3.3, DDA_3.3 Input Voltage (all inputs) ............................... -0.5V to +4.0V Output Voltage (all outputs) .......................... -0.5V to +4.0V Lead ...
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Micrel, Inc. Notes: 1. Exceeding the absolute maximum rating may damage the device. Stresses greater than the absolute maximum rating may cause permanent damage to the device. Operation of the device at these or any other conditions above those specified ...
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Micrel, Inc. Timing Diagrams MII SQE Timing (10Base-T) Timing Parameter SQE t SQEP April 2010 Figure 7. MII SQE Timing (10Base-T) Description TXC period TXC pulse width low TXC pulse width high COL ...
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Micrel, Inc. MII Transmit Timing (10Base-T) Timing Parameter SU1 t SU2 t HD1 t HD2 t CRS1 t CRS2 April 2010 Figure 8. MII Transmit Timing (10Base-T) Description TXC period TXC pulse width ...
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Micrel, Inc. MII Receive Timing (10Base-T) Timing Parameter RLAT April 2010 Figure 9. MII Receive Timing (10Base-T) Description RXC period RXC pulse width low RXC pulse width high (RXD[3:0], RXER, RXDV) ...
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Micrel, Inc. MII Transmit Timing (100Base-TX) Timing Parameter SU1 t SU2 t HD1 t HD2 t CRS1 t CRS2 April 2010 Figure 10. MII Transmit Timing (100Base-TX) Description TXC period TXC pulse width ...
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Micrel, Inc. MII Receive Timing (100Base-TX) Timing Parameter RLAT April 2010 Figure 11. MII Receive Timing (100Base-TX) Description RXC period RXC pulse width low RXC pulse width high (RXD[3:0], RXER, RXDV) ...
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Micrel, Inc. RMII Timing Timing Parameter t cyc April 2010 Figure 12. RMII Timing – Data Received from RMII Figure 13. RMII Timing – Data Input to RMII Description Min Clock cycle Setup time ...
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Micrel, Inc. Auto-Negotiation Timing Timing Parameter t BTB t FLPW CTD t CTC Table 12. Auto-Negotiation Fast Link Pulse (FLP) Timing Parameters April 2010 Figure 14. Auto-Negotiation Fast Link Pulse (FLP) Timing Description FLP Burst to FLP ...
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Micrel, Inc. MDC/MDIO Timing Timing Parameter Description t MDC period P t MDIO (PHY input) setup to rising edge of MDC 1MD1 t MDIO (PHY input) hold from rising edge of MDC MD2 t MDIO (PHY output) delay from rising ...
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Micrel, Inc. Reset Timing The KSZ8041NLJ reset timing requirement is summarized in the following figure and table. Parameter After the de-assertion of reset recommended to wait a minimum of 100µs ...
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Micrel, Inc. Reset Circuit The following reset circuit is recommended for powering up the KSZ8041NLJ if reset is triggered by the power supply. The following reset circuit is recommended for applications where reset is driven by another device (e.g., CPU ...
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Micrel, Inc. Reference Circuits for LED Strapping Pins The following figure shows the reference circuits for pull-up, float and pull-down on the LED1 and LED0 strapping pins. April 2010 Pull-up KSZ8041NLJ LED pin Float KSZ8041NLJ LED pin Pull-down KSZ8041NLJ LED ...
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Micrel, Inc. Selection of Isolation Transformer A 1:1 isolation transformer is required at the line interface. An isolation transformer with integrated common-mode chokes is recommended for exceeding FCC requirements. The following table gives recommended transformer characteristics. Parameter Turns ratio Open-circuit ...
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Micrel, Inc. Package Information MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. ...