VSC8201DL VITESSE [Vitesse Semiconductor Corporation], VSC8201DL Datasheet
VSC8201DL
Related parts for VSC8201DL
VSC8201DL Summary of contents
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Introduction This purpose of this application note in conjunction with the VSC8201 Datasheet is to provide information to assist in the design and lay- out of the VSC8201 Gigabit Ethernet Transceiver. Power Supply Organization and Decoupling The VSC8201 requires a ...
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... Local Decoupling Required Four 0.1uF capacitors Two 0.1 uF capacitors One 0.1 uF capacitor Four 0.1uF capacitors Local Decoupling Required Four 0.1uF capacitors Two 0.1uF capacitors One 0.1 uF capacitor Four 0.1uF capacitors VSC8201DL 0 Page ...
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... Panasonic EXCELSA39 or similar. • Steward HI 1206N101R-00 or similar. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION . Note:Place vias close to or under neath the capacitor pads for low inductive path and higher heat dissipation rate. Figure 3: Power Supply Decoupling Schematic VSC8201DL 0 Page ...
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... The chassis ground and the PCB ground should have as much separation as possible. 45 mils or greater is recommended. • There should be no power or ground plane beneath the primary and secondary coils of the transformer. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 4: Ground Plane Layout VSC8201DL - Page ...
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... PHY is in one of two power down states and has the ability to detect valid signal energy levels at the media pins and convey it to the station manager. 1. Refer VSC8201 Datasheet. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 5: Regulator Circuit using 3.3v, +/-10% supply TM , particularly suited to power saving applications like laptop comput- VSC8201DL - Page ...
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... PLL disabled - 125MHz clock not available on CLK125 pin PLL enabled - 125MHz clock available on CLK125 pin TM feature: TM squelch levels. This is summarized in the following squelch levels TM TM signal detect interrupt Power dissipation TM enable bit i.e. clears the register 23:5. When this bit VSC8201DL a - Page ...
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... Characteristic impedance of the microstrip is calculated using the approximation: 87 ⋅ ------------------------- ε + 1.41 r The propagation delay for the microstrip is ⋅ 0.475ε pd Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 6: Transmission Lines t 5.98 h ⋅ ------------------- Ω 0.67 ps/ft r ε of the PC board material, thickness of the dielectric r VSC8201DL - Page ...
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... The common value for the characteristic impedance of a transmission line is 50 Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION 4 b ⋅ – 1 × ---------- - – inch t =141ps for a microstrip line. If the rise time of the signal is 0.7ns then a trace pd Ω . VSC8201DL - Page ...
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... High Speed signals of VSC8201 Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 7: VSC8201 System Schematic VSC8201DL - Page ...
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... Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Ω Ω , and the traces for each differential pair must be routed symmetrically as close to each Ω , additional series Ω . Thus, external series termination . Ω transmission lines: - Page VSC8201DL Ω ...
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... PCB, then the PHY may mis-latch data under the worst case TXC delay conditions, resulting in packet errors at the MAC/PHY transmit interface. Due to this it is important to follow the guidelines mentioned in the section below during board layout. 1. RGMII Version 1.2a Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION 1 2.5V. VSC8201DL - Page ...
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... Needs extra board space for the additional trace delays on the RXC and TXC traces. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION 1.5ns-2ns PCB trace additional PCB trace delay RXC RX_CTL RD3 RD2 RD1 RD0 TD3 TD2 TD1 TD0 TX_CTL TXC 1.5ns-2ns PCB trace additional PCB trace delay VSC8201DL VDDIO=3.0 - 3.6v VSC8201 - Page ...
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... Needs extra board space for the additional trace delays needed on the TD[3:0] and the TX_CTL traces. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION RXC RX_CTL RD3 RD2 RD1 RD0 TD3 TD2 TD1 TD0 TX_CTL TXC VSC8201DL VDDIO=3.0 - 3.6v VSC8201 - Page ...
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... The MAC which is at 3.3V should be capable of detecting 2.5V logic levels. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION 1N914 470 ohms MA2J111 MA111 or equivalent RXC RX_CTL RD3 RD2 RD1 RD0 TD3 TD2 TD1 TD0 TX_CTL TXC VSC8201DL VDDIO_PHY 0.1uf 0.001uf VDDIO_PHY VSC8201 - Page ...
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... In input mode these pins are sampled on the rising edge of RST# signal. After reset these are in output mode.The ADDR and REG_EN pins sampled at startup determine the polarity of the LED output signal. The QUALITY LED is asserted when the signal quality is good. Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 8: LED Interface Circuit VSC8201DL - Page ...
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... Management Data Interrupt Output. This open drain, active low output signal indicates a change in the PHY’s link operating conditions for which a station manager must interrogate to determine further information. This pin should be pulled up to VDDIO at the Station Manager or controller through an external 10kΩ pull-up resistor. Description VSC8201DL - Page ...
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... Virtually any RJ-45 connector that meets the CAT-5 electrical specification will work with the VSC8201. Two such manufacturers are: AMP (a division of Tyco International, Ltd.) Tel: 717-564-0100 http://www.amp.com Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Figure 9: RJ45 Connectors Figure 10: RJ45 Connector Pinouts Transpower Technologies, Inc. Tel: 775-852-0140 http://www.trans-power.com VSC8201DL - Page ...
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... AMP Transpower Tech., Inc. a Transpower Tech., Inc. Pulse Engineering, Inc. Tel: 858-674-8100 http://www.pulseeng.com VSC8201DL Description Single Port, unshielded, without LEDs, tab-down, ‘CAT-5’ pinout. Single Port, Through hole, Tab-up, pinout is unique to Transpower Single Port, Through hole, Tab-up, pinout is unique to Transpower Halo Electronics, Inc ...
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... Atmosphere T equal to or below 125 – T 125 C 70 – ---------------------------------- - = ⁄ ≤ 1.5w for T 125 C j Description must be maintained for commercial o ( ⁄ C C/w. This yields a VSC8201DL Return Loss Compensation = 10pF 6.8pF 2 - Page ...
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... Figure 14: ”Thermal Ground Plane Connections”, below). Rev. 1.6.3 - 9/29/04 VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION PCB Thermal Via BGA Ball Pad Figure 13: Thermal Via Layout VSC8201 BGA Package Figure 14: Thermal Ground Plane Connections PCB Traces BGA Balls 1-ounce Ground Plane Thermal via VSC8201DL - Page ...
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... VITESSE - CONFIDENTIAL & PROPRIETARY - DO NOT COPY WITHOUT PERMISSION Date Description 16 Jan 03 7 Aug 03 Updated decoupling power supply, capacitor lay- out (added LBGA figure), and schematic 29 Sep 04 Changed CIS8201 to VSC8201 globally. Integrated the information from the CIS8201 RGMII 3.3V Appnote into this document. All Rights Reserved. VSC8201DL - Page ...