HD3SS6126EVM

Preliminary HD3SS6126EVM Device Reference Design User's Guide Literature Number: SLAU541 October 2013 Preliminary User's Guide SLAU541 – October 2013 HD3SS6126EVM Device Reference Design This user's guide shows a USB 3.0 KVM switch application example of the HD3SS6126 device and provides recommendations for high-speed digital signal PCB design. 1 HD3SS6126EVM Overview 1.1 Basic Function Introduction of HD3SS6126EVM Use the HD3SS6126 evaluation module (EVM) board to select between one of two USB host systems for an USB device and to switch between two USB hosts. Figure 1 shows the KVM switch application. The bidirectional capability of the HD3SS6126 also supports applications that allow connections between two target devices and one source device, such as a shared USB 3.0 host between two USB 3.0 devices. Figure 1. KVM Switch Application of HD3SS6126EVM USB 3.0 has additional differential TX and RX super-speed signal paths in addition to the USB 2.0 signal path. USB 3.0 always tries to work in super-speed mode first, if the system super-speed path is connected well. Otherwise, it works in USB 2.0 mode. The HD3SS6126EVM manually selects different USB 3.0 paths according to demand. For the HD3SS6126EVM, USB 3.0 micro-B receptacles are employed on the host-side USB port, but a standard type-B receptacle is available, if desired. USB 3.0 standard type-A receptacle is used as the device-side USB port. The USB ports can be attached through a standard USB cable to any USB 3.0, or legacy USB host, hub, or device. However, a legacy USB cable forces the system to use high-speed operation. 2 HD3SS6126EVM Device Reference Design Copyright © 2013, Texas Instruments Incorporated SLAU541 – October 2013 Submit Documentation Feedback Preliminary HD3SS6126EVM Overview www.ti.com 1.2 HD3SS6126EVM Operation Figure 2 shows the HD3SS6126EVM and its default setting. Four LEDs are used to indicate the selected channel and current working mode: super speed (SS) or non-SS. Table 1 lists the working mode with different switch selections. The independent output enable pin of the HD3SS6126 can be used to enable or disable the output to save power in applications where low power is necessary. Figure 2. Voice Interface - Example of HD3SS6126 KVM Switch EVM Table 1. Switches and LED Indicators (1) (2) Mode SW1 SW2 SW3 D6 D7 D8 D9 Function 1 2, 3 1, 2 1, 2 Off Off Off Off KVM HS/ID switch disabled 2 2, 3 1, 2 2, 3 Off Off Off Off KVM HS/ID switch disabled 3 2, 3 2, 3 1, 2 Off Off Off Off KVM HS/ID switch disabled 4 2, 3 2, 3 2, 3 Off Off Off Off KVM HS/ID switch disabled 5 1, 2 1, 2 1, 2 On Off On Off AC channel USB 3.0 selected 6 1, 2 2, 3 2, 3 Off On Off On AB channel USB 3.0 selected (1) (2) SS Non-SS : High speed, full speed, or low speed HD3SS6126EVM is powered from the USB hosts, D1 and D5, which are employed to avoid conflict between the two voltage sources from different USB hosts. The smaller the forward voltage drop, the better the system performance. U22 is a low Ron PMOS power switch used to enable or disable the EVM and activate the USB device. Note that the HD3SS6126EVM draws some current from the VBUS, so TI recommends low-power-consumption devices. Per USB 3.0 specification, the 0201, 0.1-µF capacitors are preferred in the transmitter side, but 0402 still works. To be well biased either by source or sink, TI recommends placing capacitors on only one side of the HD3SS6126 device. Capacitors should be placed on either the host or device side, so no AC capacitors are necessary for this EVM. The HD3SS6126 incorporates internal ESD protection circuitry for all the differential pairs up to HBM 2000 kV and CDM 500 V, so no ESD protection devices populated on this EVM. However, TI recommends the TPD2EUSB30 devices for any system where ESD events are a concern and the application equipment exceeds the device specifications. SLAU541 – October 2013 Submit Documentation Feedback HD3SS6126EVM Device Reference Design Copyright © 2013, Texas Instruments Incorporated 3 Preliminary Reference Schematics 2 www.ti.com Reference Schematics USB_Host1 Fuse USB_Device USB_Host2 LDO 3.3 V_VCC Switch control and LED HD3SS6126 Figure 3. Power Block Diagram 4 HD3SS6126EVM Device Reference Design Copyright © 2013, Texas Instruments Incorporated SLAU541 – October 2013 Submit Documentation Feedback Preliminary Reference Schematics www.ti.com 3P3V_VCC LP1 Note: The differential characteristic impedance for the differential pairs is recommended to be 90 Ω; Single-end characteristic impedance 50 Ω. Remove 2 cap since there are only 4 VCC pins. LP2 R1 0R 2 F1 1 0R 2 Dev_HSA_DM 3 Dev_HSA_DP 1 USB3_TX_P SHIELD_GND1 SHIELD_GND2 PAGE3 USBID_A 4 PAGE3 HS_SEL 5 Dev_SSA_RX(n) 6 Dev_SSA_RX(p) U1 OE# 42 2 3 41 38 37 HSC1(n) HSC1(p) HSA1(n) HSA1(p) SEL1 HS_OE1# USB2_ID 36 35 HSB1(n) HSB1(p) USB1_ID HD3SS612x Mux switch Dev_SSA_TX(p) Dev_SSA_TX(n) Dev_SSA_RX(p) Dev_SSA_RX(n) 7 8 Dev_SSA_TX(n) 9 Dev_SSA_TX(p) Dev_HSA_DM Dev_HSA_DP 10 PAGE3 SS_SEL PAGE3 OE# 11 12 15 16 7 8 9 6 SSB0(p) SSB0(n) SSB1(p) SSB1(n) SSC0(p) SSC0(n) SSC1(p) SSC1(n) SSA0(p) SSA0(n) SSA1(p) SSA1(n) HSA(n) HSA(p) HSC0(n) HSC0(p) HSB0(n) HSB0(p) SEL0 HS_OE0# 29 28 27 26 25 24 23 22 Host_SSB_TX(p) Host_SSB_TX(n) Host_SSB_RX(p) Host_SSB_RX(n) Host_SSC_TX(p) Host_SSC_TX(n) Host_SSC_RX(p) Host_SSC_RX(n) 34 33 32 31 Host_HSC_DM Host_HSC_DP Host_HSB_DM Host_HSB_DP USB1_Dev_SSB_RX(p) USB1_Dev_SSB_RX(n) USB1_Dev_SSB_TX(p) USB1_Dev_SSB_TX(n) USB2_Dev_SSC_RX(p) USB2_Dev_SSC_RX(n) USB2_Dev_SSC_TX(p) USB2_Dev_SSC_TX(n) USB2_HSC_DM USB2_HSC_DP USB1_HSB_DM USB1_HSB_DP PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 PAGE4 11 USB3_STANDARD_TYPE_A_RECEPTACLE Pad USB3_TX_N VBUS 43 GND1 2 Fuse NC NC1 NC2 NC3 NC4 USB3_RX_P 2 5 13 20 30 R20 1 PAGE3 USB3_RX_N C8 NC, 10 µF 1 4 18 39 40 GND C4 0.1 µF GND GND GND GND GND USB2_D_P C3 0.1 µF 10 14 17 19 21 USB2_D_N C2 0.1 µF LP4 VDD VDD VDD VDD U20 VBUS_PWR C1 0.1 µF LP3 1 0603 NC,100u C100 Thermal Pad, not an actual pin Note: Standard-A Receptacle Tx and Rx are defined from the host perspective J5 2 1 SilkScreen: Default no shunts on J5 USBID_A R109 4.98 kΩ SLAU541 – October 2013 Submit Documentation Feedback HD3SS6126EVM Device Reference Design Copyright © 2013, Texas Instruments Incorporated 5 Preliminary Reference Schematics www.ti.com U22 1 2 5 6 8 PAGE4 TypeB_VBUS S1 S2 S3 S4 S5 D2 D1 G 7 4 3 VBUS PAGE2 PMOS_PowerSwitch R6 4.98 kΩ 3P3V_VCC U25 1 SilkScreen: OE#:Disable(Default) 3 3 2 2 1 SW1 1 SilkScreen: OE#:Enable Switch CJS-1201 R7 4.98 kΩ C188 1 µF 3 R19 50 kΩ 5 VOUT C189 1µF GND 4 VEN BYPASS LP3985IM5-3.3 C182 0.01 µF Use Resistor divider to get about 3.3 V OE# Note: This voltage should be from the LDO. 3P3V_VCC 3P3V_VCC R105 4.98 kΩ SilkScreen: HS_AB 3 3 2 2 1 SW3 1 SS_SEL PAGE2 SN74LVC1G04DSF 4 2 2 SilkScreen: SS_ AB Place near the USB 3.0 Micro-B receptacle 2 D6 LED RED 0805 SilkScreen: SS_ AC SN74LVC1G04DSF 2 SN74LVC1G04DSF R102 350 0402 5% D7 LED RED 0805 HD3SS6126EVM Device Reference Design U27 5 4 1 3 Place near the USB 3.0 Micro-B receptacle 1 R101 350 0402 5% U26 5 3P3V_VCC 4 1 3 SN74LVC1G04DSF U24 5 4 1 3P3V_VCC 1 0402 5% Place near the USB 3.0 Micro-B receptacle 1 SilkScreen: HS_ AB 3 2 U23 5 Switch CJS-1201 SilkScreen: HS_AC R106 4.98 kΩ 3P3V_VCC 6 6 3P3V_VCC 6 Switch CJS-1201 SilkScreen: SS_AB R3 4.98 kΩ HS_SEL PAGE2 3 SilkScreen: SS_AC 3 3 2 2 SW2 1 1 6 R2 4.98 kΩ 6 VIN OE# PAGE2 R18 100 kΩ Note: This voltage should be from the LDO. 2 R103 350 0402 5% Placenear the USB3.0 Micro-B receptacle 2 D8 LED Orange 0805 SilkScreen: HS_ AC R104 350 LED Orange 0805 D9 SLAU541 – October 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Preliminary Reference Schematics www.ti.com J2 2 1 SilkScreen: Default no shunts on J2 J1 D5 1 TypeB_VBUS J4 2 2 1 PAGE3 MBRS130L 2 1 SilkScreen: Default no shunts on J4 J3 SilkScreen: USB1 U2 SilkScreen: USB2 U21 D1 2 1 2 1 1 1 VBUS VBUS MBRS130L PAGE2 PAGE2 USB1_HSB_DM USB1_HSB_DP USB1_MicB_HSB_DM 2 USB1_MicB_HSB_DP 3 PAGE2 D- PAGE2 D+ R110 PAGE2 PAGE2 PAGE2 USB1_ID 4 R111 NC, 4.98 kΩ 5 6 USB1_Dev_SSB_TX(n) 7 USB1_Dev_SSB_TX(p) 8 PAGE2 USB1_Dev_SSB_RX(n) PAGE2 USB1_Dev_SSB_RX(p) USB2_HSC_DP USB2_MicB_HSC_DM 2 USB2_MicB_HSC_DP 3 USB2_MicB_ID 4 DD+ R112 USB1_MicB_ID 0R USB2_HSC_DM USB1_MicB_SSB_RX(n) 9 USB1_MicB_SSB_RX(p) 10 11 12 13 14 15 16 PAGE2 ID USB2_ID 0R GND MicB_SSTX– MicB_SSTX+ PAGE2 PAGE2 R113 NC, 4.98 kΩ 6 USB2_Dev_SSC_TX(n) 7 USB2_Dev_SSC_TX(p) 8 GND_DRAIN MicB_SSRX– PAGE2 USB2_Dev_SSC_RX(n) MicB_SSRX+ PAGE2 USB2_Dev_SSC_RX(p) Shield Shield1 Shield2 Shield3 Shield4 Shield5 5 USB2_MicB_SSC_RX(n) 9 USB2_MicB_SSC_RX(p) 10 USB3.0 Micro-B Receptacle USB3.0 Micro-B Receptacle Note: Micro-B Receptacle Tx and Rx are defined from the device perspective SLAU541 – October 2013 Submit Documentation Feedback 11 12 13 14 15 16 ID GND MicB_SSTX– MicB_SSTX+ GND_DRAIN MicB_SSRX– MicB_SSRX+ Shield Shield1 Shield2 Shield3 Shield4 Shield5 Note: Micro-B Receptacle Tx and Rx are defined from the device perspective HD3SS6126EVM Device Reference Design Copyright © 2013, Texas Instruments Incorporated 7 EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods. Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. Please read the User's Guide and, specifically, the Warnings and Restrictions notice in the User's Guide prior to handling the product. This notice contains important safety information about temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which such TI products or services might be or are used. TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services described herein. REGULATORY COMPLIANCE INFORMATION As noted in the EVM User’s Guide and/or EVM itself, this EVM and/or accompanying hardware may or may not be subject to the Federal Communications Commission (FCC) and Industry Canada (IC) rules. For EVMs not subject to the above rules, this evaluation board/kit/module is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end product fit for general consumer use. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES-003 rules, which are designed to provide reasonable protection against radio frequency interference. Operation of the equipment may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. General Statement for EVMs including a radio User Power/Frequency Use Obligations: This radio is intended for development/professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability of this EVM and its development application(s) must comply with local laws governing radio spectrum allocation and power limits for this evaluation module. It is the user’s sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and unauthorized by Texas Instruments unless user has obtained appropriate experimental/development licenses from local regulatory authorities, which is responsibility of user including its acceptable authorization. For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. For EVMs annotated as IC – INDUSTRY CANADA Compliant This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Concerning EVMs including radio transmitters This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concerning EVMs including detachable antennas Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada. Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de l'utilisateur pour actionner l'équipement. Concernant les EVMs avec appareils radio Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. 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It is intended solely for use for preliminary feasibility evaluation in laboratory/development environments by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems and subsystems. It should not be used as all or part of a finished end product. Your Sole Responsibility and Risk. You acknowledge, represent and agree that: 1. 2. 3. 4. You have unique knowledge concerning Federal, State and local regulatory requirements (including but not limited to Food and Drug Administration regulations, if applicable) which relate to your products and which relate to your use (and/or that of your employees, affiliates, contractors or designees) of the EVM for evaluation, testing and other purposes. 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