ksz8021rnli Micrel Semiconductor, ksz8021rnli Datasheet
ksz8021rnli
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ksz8021rnli Summary of contents
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General Description The KSZ8031RNL 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 KSZ8031RNL is a highly-integrated, compact solution. It reduces board cost and simplifies ...
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... Built-in 1.2V regulator for core • Available in 24-pin (4mm x 4mm) QFN package Ordering Information Temperature Part Number Range KSZ8021RNL 0°C to 70°C (1) −40°C to 85°C KSZ8021RNLI KSZ8031RNL 0°C to 70°C (1) −40°C to 85°C KSZ8031RNLI Note: 1. Contact factory for lead time. August 2010 Applications • ...
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Micrel, Inc. Revision History Revision Date Summary of Changes 1.0 8/16/10 Data sheet created. August 2010 KSZ8021RNL / KSZ8031RNL 3 M9999-082710-1.0 ...
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Micrel, Inc. Contents General Description .............................................................................................................................................................. 1 Features ................................................................................................................................................................................. 1 Functional Diagram............................................................................................................................................................... 1 Applications........................................................................................................................................................................... 2 Ordering Information ............................................................................................................................................................ 2 Revision History.................................................................................................................................................................... 3 Contents................................................................................................................................................................................. 4 List of Figures........................................................................................................................................................................ 6 List of Tables ......................................................................................................................................................................... 7 Pin Configuration – KSZ8021RNL / KSZ8031RNL.............................................................................................................. 8 ...
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Micrel, Inc. NAND Tree Support ............................................................................................................................................................ 21 NAND Tree I/O Testing..................................................................................................................................................... 22 Power Management ............................................................................................................................................................ 22 Power Saving Mode.......................................................................................................................................................... 22 Energy Detect Power Down Mode ................................................................................................................................... 22 Power Down Mode ........................................................................................................................................................... 22 Slow Oscillator Mode ........................................................................................................................................................ 23 Reference Circuit for ...
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Micrel, Inc. List of Figures Figure 1. Auto-Negotiation Flow Chart................................................................................................................................. 14 Figure 2. KSZ8021/31RNL RMII Interface (RMII – 25MHz Clock Mode) ............................................................................ 16 Figure 3. KSZ8021/31RNL RMII Interface (RMII – 50MHz Clock Mode) ............................................................................ 17 Figure 4. KSZ8021/31RNL and KSZ8041FTL ...
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Micrel, Inc. List of Tables Table 1. RMII Signal Description.......................................................................................................................................... 15 Table 2. RMII Signal Connection for RMII Back-to-Back Mode (100Base-TX Copper Repeater) ...................................... 18 Table 3. MII Management Frame Format – for KSZ8021/31RNL........................................................................................ 19 Table 4. MDI/MDI-X Pin Definition ...
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Micrel, Inc. Pin Configuration – KSZ8021RNL / KSZ8031RNL August 2010 24-Pin (4mm x 4mm) QFN 8 KSZ8021RNL / KSZ8031RNL M9999-082710-1.0 ...
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Micrel, Inc. Pin Description – KSZ8021RNL / KSZ8031RNL Pin Number Pin Name 1 VDD_1.2 2 VDDA_3.3 3 RXM 4 RXP 5 TXM 6 TXP REXT 10 MDIO 11 MDC 12 RXD1 13 RXD0 14 VDDIO ...
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Micrel, Inc. Pin Description – KSZ8021RNL / KSZ8031RNL (Continued) Pin Number Pin Name 19 TXEN 20 TXD0 21 TXD1 22 GND LED0 / 23 ANEN_SPEED 24 RST# PADDLE GND Notes Power supply. Gnd = Ground ...
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Micrel, Inc. Strapping Options – KSZ8021RNL / KSZ8031RNL Pin Number Pin Name 15 PHYAD[1:0] 23 ANEN_SPEED Note: 1. Ipu/O = Input with internal pull-up (see Electrical Characteristics for value) during power-up/reset; output pin otherwise. Ipd/O = Input with internal pull-down ...
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Micrel, Inc. Functional Description: 10Base-T/100Base-TX Transceiver The KSZ8031RNL is an integrated single 3.3V supply Fast Ethernet transceiver fully compliant with the IEEE 802.3 Specification. It reduces board cost and simplifies board layout by using on-chip termination resistors for ...
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Micrel, Inc. 10Base-T Receive On the receive side, input buffer and level detecting squelch circuits are employed. A differential input receiver circuit and a PLL performs the decoding function. The Manchester-encoded data stream is separated into clock signal and NRZ ...
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Micrel, Inc. August 2010 Figure 1. Auto-Negotiation Flow Chart 14 KSZ8021RNL / KSZ8031RNL M9999-082710-1.0 ...
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Micrel, Inc. RMII Data Interface The Reduced Media Independent Interface (RMII) specifies a low pin count Media Independent Interface (MII). It provides a common interface between physical layer and MAC layer devices, and has the following key characteristics: • Pin ...
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Micrel, Inc. So long as carrier detection criteria are met, CRS_DV remains asserted continuously from the first recovered dibit of the frame through the final recovered dibit, and it is negated prior to the first REF_CLK that follows the final ...
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Micrel, Inc. RMII – 50MHz Clock Mode The KSZ8021RNL is configured to RMII – 50MHz Clock Mode after it is powered up or hardware reset with the following: • An external 50MHz clock source (oscillator) connected to XI (Pin 8) ...
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Micrel, Inc. Back-to-Back Mode – 100Mbps Copper Repeater / Media Converter Two KSZ8021/31RNL devices can be connected back-to-back to form a managed 100Base-TX copper repeater. A KSZ8021/31RNL and a KSZ8041FTL can be connected back-to-back to provide a managed media converter ...
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Micrel, Inc. MII Management (MIIM) Interface The KSZ8021/31RNL supports the IEEE 802.3 MII Management Interface, also known as the Management Data Input / Output (MDIO) Interface. This interface enables upper-layer device, like a MAC processor, to monitor and control the ...
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Micrel, Inc. RJ-45 Pin Straight Cable A straight cable connects a MDI device to a MDI-X device MDI-X device to a MDI device. Figure 5 depicts a typical straight cable connection between a NIC card (MDI) and a ...
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Micrel, Inc. ® LinkMD Cable Diagnostics ® The LinkMD function utilizes time domain reflectometry (TDR) to analyze the cabling plant for common cabling problems, such as open circuits, short circuits and impedance mismatches. ® LinkMD works by sending a pulse ...
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Micrel, Inc. NAND Tree I/O Testing The following procedure can be used to check for faults on the KSZ8021/31RNL digital I/O pin connections to the board: 1. Enable NAND tree mode by setting register 16h, bit [5] to ‘1’. 2. ...
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Micrel, Inc. Slow Oscillator Mode Slow Oscillator Mode is used to disconnect the input reference crystal/clock on XI (pin 8) and select the on-chip slow oscillator when the KSZ8021/31RNL device is not in use after power-up enabled by ...
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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. Register Description (Continued) Address Name Description Register 0h – Basic Control 1 = Power down mode 0 = Normal operation If software reset (register 0.15) is used to exit Power Down mode (register 0.11 = 1), two 0.11 ...
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Micrel, Inc. Register Description (Continued) Address Name Description 1 = Link is up 1.2 Link Status 0 = Link is down 1 = Jabber detected 1.1 Jabber Detect 0 = Jabber not detected (default is low) Extended 1 ...
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Micrel, Inc. Register Description (Continued) Address Name Description Register 5h – Auto-Negotiation Link Partner Ability 1 = Next page capable 5.15 Next Page next page capability 1 = Link code word received from partner 5.14 Acknowledge 0 ...
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Micrel, Inc. Register Description (Continued) Address Name Description Register 7h – Auto-Negotiation Next Page 1 = Additional next page(s) will follow 7.15 Next Page 0 = Last page 7.14 Reserved 1 = Message page 7.13 Message Page 0 = Unformatted ...
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Micrel, Inc. Register Description (Continued) Address Name Description Register 15h – RXER Counter 15.15:0 RXER Counter Receive error counter for Symbol Error frames Register 16h – Operation Mode Strap Override 16.15:11 Reserved 16.10 Reserved 16.9:7 Reserved RMII B-to ...
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Micrel, Inc. Register Description (Continued) Address Name Description Link Partner 1 = Enable Link Partner Acknowledge Interrupt Acknowledge 1b. Disable Link Partner Acknowledge Interrupt Enable Link Down 1= Enable Link Down Interrupt 1b.10 Interrupt 0 = Disable Link ...
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Micrel, Inc. Register Description (Continued) Address Name Description Register 1Eh – PHY Control 1 1e.15:10 Reserved 1 = Flow control capable Enable Pause 1e.9 (Flow Control flow control capability 1 = Link is up 1e.8 Link Status ...
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Micrel, Inc. Register Description (Continued) Address Name Description 1 = Enable power saving 1f.10 Power Saving 0 = Disable power saving 1 = Interrupt pin active high 1f.9 Interrupt Level 0 = Interrupt pin active low 1 = Enable jabber ...
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Micrel, Inc. Absolute Maximum Ratings Supply Voltage ) .................................................. −0.5V to +1.8V (V DD_1.2 ) ....................................... −0.5V to +4. DDIO, 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. Electrical Characteristics Symbol Parameter 100Base-TX Transmit (measured differentially after 1:1 transformer) V Peak Differential Output Voltage O V Output Voltage Imbalance IMB Rise/Fall Time Rise/Fall Time Imbalance Duty-Cycle Distortion Overshoot V Reference Voltage ...
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Micrel, Inc. Timing Diagrams RMII Timing Timing Parameter t cyc Table 7. RMII Timing Parameters – KSZ8021/31RNL (25MHz input to XI pin, 50MHz output from REF_CLK pin) Timing Parameter t cyc ...
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Micrel, Inc. Auto-Negotiation Timing Timing Parameter t BTB t FLPW CTD t CTC Table 9. Auto-Negotiation Fast Link Pulse (FLP) Timing Parameters August 2010 Figure 10. 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 MDIO (PHY output) delay from rising edge ...
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Micrel, Inc. Reset Timing The KSZ8021/31RNL reset timing requirement is summarized in Figure 12 and Table 11. Parameter Description t Supply voltage ( Stable supply voltage ( Configuration setup time cs t Configuration hold time ch ...
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Micrel, Inc. Reset Circuit The following reset circuit is recommended for powering up the KSZ8021/31RNL 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 Circuit for LED Strapping Pin The pull-up, float and pull-down reference circuits for the LED0/ANEN_SPEED strapping pin are shown in Figure 15 for 3.3V and 2.5V VDDIO. For 1.8V VDDIO, LED indication support is not recommended due ...
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Micrel, Inc. Magnetics Specification 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. Tables 12 and 13 list recommended magnetic characteristics and qualified magnetics for the ...
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Micrel, Inc. Characteristics Frequency Frequency tolerance (max) Table 14. 25MHz Crystal / Reference Clock Selection Criteria For the KSZ8021/31RNL in RMII – 50MHz Clock Mode, the reference clock is 50MHz. The reference clock connection to XI (Pin 8), and the ...
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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 Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished ...