MAX14566EEVKIT#

19-5835; Rev 0; 4/11 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E General Description Features The MAX14566E evaluation kit (EV kit) provides a proven design to evaluate the MAX14566E USB device that combines a Hi-Speed USB analog switch with a USB adapter emulator. The Hi-Speed USB transmission lines (D+/D-) have 90I differential impedance traces to meet Hi-Speed USB specifications. S Hi-Speed USB (480Mbps) The EV kit comes with the MAX14566EETA+ installed, but can also be used to evaluate the MAX14566AE and MAX14566BE with IC replacement of U1. S Fully Assembled and Tested S 90I Differential Traces for USB 2.0 S USB Powered or Externally Powered for Higher Charging Currents S Proven PCB Layout Ordering Information appears at end of data sheet. Component List DESIGNATION QTY C1, C2, C4 3 C3, C5 C6, C7, C8 C9 CEN, U3_OUT, VHC DESCRIPTION 1FF Q10%, 35V X7R ceramic capacitors (0805) Taiyo Yuden GMK212B7105K 2 1FF Q10%, 6.3V X5R ceramic capacitors (0603) TDK C1608X5R0J105k 3 47FF Q20%,16V tantalum capacitors AVX TAJC476K016RNJ 1 0.1FF Q10%, 50V X5R ceramic capacitor (0603) TDK C1608X5R1H104K 3 Red test points D1 1 6V, 200mW zener diode (SOT323) Diodes Inc. MMBZ5233BW-7-F (Top Mark: KE3) D2, D3, D4, D6 4 Green LEDs (0603) D5 1 Red LED (0603) GND 1 Black test point J1 1 USB type-A right-angle female receptacle J2 1 USB type-B right-angle female receptacle JU1, JU2, JU5, JU7 4 2-pin headers JU3, JU4, JU6, JU8 4 DESIGNATION QTY Q1 1 50V, 100mA npn transistor (3 SOT23) R1, R3, R4, R7, R12, R16 6 330I Q5% resistors (0805) R2 0 Not installed, resistor (0603) R5, R13 R6 2 1 R8 R9 1 0 0I Q5% resistors (0805) 4.7kI Q5% resistor (0603) 1kI Q5% resistor (0603) Not installed, resistor (0805) R10, R11 R14 2 1 R15 1 10kI Q5% resistors (0603) 93.1kI Q1% resistor (0603) 100kI Q5% resistor (0603) 1 USB adapter emulator (8 TDFN-EP) Maxim MAX14566EETA+ (Top Mark: ADJ) 1 Noninverting buffer driver (6 SC70) Fairchild Semi NC7WZ07P6X (Top Mark: Z07) U3 1 Adjustable current-limit switch (8 TDFN-EP) Maxim MAX14523AATA+ (Top Mark: BLO) — — 1 8 High-speed USB A-to-B cable Shunts (JU1–JU8) — 1 PCB: MAX14566E EVALUATION KIT U1 3-pin headers DESCRIPTION U2 __________________________________________________________________ Maxim Integrated Products   1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Component Suppliers SUPPLIER PHONE WEBSITE AVX Corporation 843-946-0238 www.avxcorp.com Diodes Incorporated 805-446-4800 www.diodes.com Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com Taiyo Yuden 800-348-2496 www.t-yuden.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX14566E when contacting these component suppliers. Quick Start Required Equipment • MAX14566E EV kit (USB cable included) • 5V, 2A DC power supply • User-supplied PC with a spare Hi-Speed USB port • USB 2.0 Hi-Speed/full-speed peripheral device (e.g., USB 2.0 flash drive) • Mobile device (e.g., iPhoneM, iPodM, MP3 player, etc.) Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation: 1) Verify that all jumpers (JU1–JU7) are configured for pass-through mode (see Table 5). 2) Connect the USB cable from the PC to the USB typeB port (J2) on the EV kit. 3) Verify that LEDs D2, D4, and D6 are on. 4) Connect a USB 2.0 device to the USB type-A connector (J1). 5) Verify that the USB 2.0 device is detected by the PC. 6) Remove the shunt at jumper JU1. Verify that LED D2 turns off and the USB device is no longer detected. 7) Reinstall the shunt at jumper JU1. Verify that LED D2 turns on and the USB 2.0 device is detected by the PC. 8) The EV kit is now ready for further testing. Detailed Description of Hardware The MAX14566E EV kit provides a proven layout to evaluate the MAX14566E family of USB devices that combines a Hi-Speed USB analog switch with a USB adapter emulator. The EV kit provides type-A (J1) and type-B (J2) USB ports for data routing and peripheral charging. The EV kit requires an active USB port or an external 5V, 2A DC supply for operation. The device’s autodetection mode automatically identifies the type of portable device connected using its charger identification circuit. Requiring no external software, the device allows a host USB port to support USB Battery Charging Specification, Revision 1.2-compliant devices with shorted D+/D- detection, as well as Apple chargers using internal resistor-dividers for biasing data lines for Apple-compliant devices. The device also features a high-performance, Hi-Speed USB switch with low 4pF (typ) on-capacitance and low 4I (typ) on-resistance used in the pass-through mode. Jumper JU1 configures the EV kit circuit for USB passthrough mode or autodetection mode. In pass-through mode, data signals are routed between USB port J2 to USB port J1 using 90I differential controlled-impedance traces, and status indicator LED D2 is on. In autodetection mode, the device’s DP and DM pins are set for dedicated charging of the device connected at J1, and status indicator LED D2 is off. The EV kit circuit utilizes several jumpers for proper operation when evaluating the EV kit in pass-through mode or autodetection mode. See the Pass-Through Mode and Autodetection Mode sections for additional information. The EV kit circuit utilizes the MAX14566E (U1) activelow CEN (or the MAX14566AE active-high CEN) output and the MAX14523A (U3) autoretry current-limit switch for current-limit protection and resetting the peripheral device connected at port J1. The switch currentlimit threshold is set to 1.5A, providing larger charging currents when operating the EV kit using an external supply. The current-limit threshold can be reconfigured by replacing resistor R14. Status LED indicators D3 and D5 provide the status of U3’s ON and FLAG input and output, respectively. Installed capacitors C6, C7, and C8 are available at port J1 and are used to simulate a true USB host output capacitance when operating the current-limit switch using an external supply at the VIN and GND PCB pads. Status indicator LED D6 turns on when valid bus power is available at port J1. The EV kit can also be used to evaluate the MAX14566AE and MAX14566BE devices. See the Evaluating the MAX14566BE section for additional information for configuring the EV kit for pass-through mode or autodetection mode when evaluating the MAX14566BE. iPhone and iPod are registered trademarks of Apple, Inc. __________________________________________________________________ Maxim Integrated Products   2 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Power-Supply Configuration The EV kit circuit derives its power from USB port J2 (VBUS) or an external 5V supply applied at the VIN and GND PCB pads. VBUS or VIN sets the EV kit VHC powerrail voltage using jumper JU3. VHC is the power source for the MAX14566E/MAX14566AE/MAX14566BE and the noninverting buffer driver (U2). LED D4 turns on and is brightly lit when the VHC power plane is above 3.3V. See Table 1 for proper JU3 configuration. Jumpers JU4 and JU6 set the 5V bus power for port J1 using VBUS, VIN, or U3_OUT. LED D6 is on when a valid bus voltage is applied at port J1. In pass-through mode, the EV kit circuit uses port J2 bus voltage as the power source. In autodetection mode, the EV kit can use an external 4.75V to 5.25V power supply connected at VIN for higher charging current, if required for the device connected at J1. See Table 2 for proper JU4 and JU6 configuration. VCC Power (JU2) Jumper JU2 is available for monitoring the MAX14566E/ MAX14566AE/MAX14566BE VCC input current. Install a shunt at JU2 for normal operation. Remove the shunt at JU2 and place an ammeter in series with the jumper pins to monitor the device supply current. See Table 3 for proper JU2 configuration. Modes of Operation (MAX14566E/MAX14566AE) Jumper JU1 configures the EV kit circuit for USB passthrough or autodetection mode by setting the proper logic level at the device’s CB pin. In pass-through mode, Table 1. VHC Power-Plane Configuration (JU3) SHUNT POSITION VHC POWER PLANE SET BY 1-2 VBUS 2-3 VIN Table 2. Power Supply Configuration (JU4, JU6) JUMPER JU4 JU6 SHUNT POSITION LED D2 is on. In autodetection mode, LED D2 is off. The EV kit requires several jumper reconfigurations for USB pass-through and autodetection modes. See Table 4 for proper JU1 configuration. See the Evaluating the MAX14566BE section for configuring the EV kit mode of operation when evaluating the MAX14566BE. Pass-Through Mode In pass-through mode, the device’s positive data lines (TDP, DP) are shorted together and the negative data lines (TDM, DM) are shorted together, allowing the routing of data signals from port J2 to port J1. See Table 5 for proper jumper configuration for pass-through mode operation. Autodetection Mode The devices feature autodetection mode for dedicated chargers and a USB host. In autodetection mode, the devices monitor the voltages at DM and DP to determine the type of device attached. If DM R 2.3V (typ) and DP P 2.3V (typ), the voltage stays unchanged. If DM < 2.3V (typ), the device’s internal switch disconnects DM and DP from the resistor-divider and DP and DM are shorted together for dedicated charging mode. If DP > 2.3V (typ), the internal switch disconnects DM and DP from the resistor-divider and DP and DM are shorted together for dedicated charging mode. Once the charging voltage is removed, the short between DP and DM is disconnected for normal operation. To configure the EV kit for autodetection mode, see Table 6. Table 3. VCC Configuration (JU2) SHUNT POSITION Installed Not installed EV KIT FUNCTION Power applied at VCC input. VCC input current monitoring. Ammeter in series with jumper pins 1-2. Table 4. EV Kit Operating Modes (JU1) SHUNT POSITION CB PIN Installed Connected to VHC supply through resistor R5. Not installed Connected to ground through resistor R6. LED D2 STATUS EV KIT OPERATION On Pass-through mode. The USB data transfers between J2 and J1. Off Autodetection mode. Peripheral device charging at J1. EV KIT FUNCTION 1-2 VBUS power source for U3 input. 2-3 VIN power source for U3 input. 1-2 U3_OUT power source for port J1. 2-3 Port J1 power source dependent on JU4 setting. Current-limit switch (U3) bypassed. __________________________________________________________________ Maxim Integrated Products   3 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Table 5. Shunt Configuration for Pass-Through Mode (JU1–JU7) JUMPER SHUNT POSITION JU1 Installed Pass-through mode. JU2 Installed Power applied at the VCC input. JU3 1-2 VHC power plane set by VBUS. JU4 1-2 VBUS input power source for U3. JU5 Not installed JU6 1-2 JU7 Not installed EV KIT FUNCTION Reset function for the MAX14566BE. Shunt should remain uninstalled for MAX14566E/MAX14566AE evaluation. U3_OUT power source for port J1. Capacitance load disconnected from port J1. Table 6. Shunt Configuration for Autodetection Mode (JU1–JU7) JUMPER SHUNT POSITION JU1 Not Installed JU2 Installed Power applied at the VCC input. JU3 1-2 VHC power plane set by VBUS. JU4 2-3 VIN input power source for U3. JU5 Not Installed JU6 1-2 JU7 Installed EV KIT FUNCTION Autodetection mode. Reset function for MAX14566BE. Shunt should remain uninstalled for MAX14566E/MAX14566AE evaluation. U3_OUT power source for port J1. Capacitance load connected to port J1. Jumper JU4 configures the EV kit for higher charging currents when using an external supply at the VIN and GND PCB pads. The EV kit maximum charging current is limited to 1.5A using the U3 current-limit switch. To reconfigure the EV kit to a lower charging current, replace resistor R14 and use the following equation: R14 (kΩ) = 141400 ILIM(mA) where ILIM is the desired current-limit threshold in mA and R14 is in kI. Enable the power supply connected at VIN. Connect a mobile device with a half-charged battery to the port J1 type-A connector. Read the value of the current sourced by the VIN power supply and compare it to the device charging specification. An unsuccessful charging recognition shows a current between 100mA and 200mA for a brief time interval. Note: The EV kit works in autodetection mode when using VBUS as the sole power source. Most PCs supply more than 500mA; however, VBUS may be current limited to 500mA due to the USB current-limit specifications. When operating the EV kit using VBUS, verify that a shunt is not installed at jumper JU7 (capacitors C6, C7, and C8 disconnected from port J1). Automatic Peripheral Reset (MAX14566E/MAX14566AE) In addition to configuring the EV kit for pass-through or autodetection mode, jumper JU1 is also used for resetting the peripheral device connected at port J1. To perform a peripheral reset, remove and then reinstall the shunt at JU1 (or vice versa). During a reset condition, the MAX14566E’s active-low CEN output pulses high for 1s. Transistor Q1 turns on, pulling the U3 ON pin low, resulting in the momentary turn on of LED D3 and disconnection of the bus power at port J1 for the 1s period. For the MAX14566AE, remove Q1 and install a 0I resistor at the 0805 PCB pad R9. During a reset condition, the MAX14566AE active-high CEN output pulses low for 1s. The U3 ON pin is pulled low, resulting in the momentary turn on of LED D3 and disconnection of the bus power at port J1 for the 1s period. Evaluating the MAX14566BE The MAX14566BE can be evaluated by replacing U1 with the MAX14566BE. The MAX14566BE has two digital inputs (CB and CB1) to configure the EV kit circuit for pass-through mode, autodetection mode, or forced dedicated-charge mode. In forced dedicated-charge mode, DP and DM are always shorted. __________________________________________________________________ Maxim Integrated Products   4 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E The EV kit requires a slight modification when evaluating the MAX14566BE device. To evaluate the MAX14566BE, perform the following: • Remove transistor Q1 or resistor R9 • Install a 0I 0603 resistor at R2 Jumpers JU1 and JU8 configure the EV kit for passthrough, autodetection, or forced dedicated-charge mode. See Table 7 for proper JU1 and JU8 configuration. Automatic Peripheral Reset (MAX14566BE) Jumper JU5 is available for resetting the peripheral device connected at port J1 by disabling the current-limit switch and disconnecting the bus power from port J1. Install a shunt at JU5 and then remove the shunt at JU5 to perform a peripheral reset at port J1. LED D3 remains on while the shunt is installed at JU5. See Table 8 for JU5 configuration. Table 7. MAX14566BE Operating Modes (JU1, JU8) SHUNT POSITION MAX14566BE OPERATING MODE JU1 (CB) JU8 (CB1) Not installed 2-3 Autodetection mode Not installed 1-2 Forced dedicated-charge mode (DP/DM shorted) Installed X Pass-through mode X = Don’t care. Table 8. MAX14566BE Peripheral Reset (JU5) SHUNT POSITION U3 ON PIN LED D3 STATUS EV KIT OPERATION Installed Connected to ground through resistor R10. On Reset condition: J1 bus power removed. Not installed Connected to VBUS or VIN through series resistors R8/R10. Off Power applied at J1. Table 9. Jumper Descriptions (JU1–JU8) JUMPER SHUNT POSITION JU1 JU2 JU3 JU4 Installed* Not installed Installed* Not installed JU6 JU7 JU8 Autodetection mode. Peripheral device charging at J1. Power applied at the VCC input. VCC input current monitoring. Ammeter in series with jumper pins 1-2. 1-2* VHC power plane set by VBUS. 2-3 VHC power plane set by VIN. 1-2* VBUS input power source for U3. 2-3 VIN input power source for U3. Installed JU5 DESCRIPTION Pass-through mode. USB data transfer between J2 and J1. Not installed* MAX14566BE evaluation (reset condition): J1 bus power removed. MAX14566BE evaluation: Power applied at port J1. Note: The shunt should remain uninstalled when evaluating the MAX14566E and MAX14566AE. 1-2* U3_OUT power source for port J1. 2-3 Port J1 power source dependent on jumper JU4 setting. Current-limit switch (U3) bypassed. Installed Not installed* 1-2* 2-3 Capacitance load connected to port J1. Capacitance load disconnected from port J1. MAX14566BE evaluation. Sets the MAX14566BE operating modes with jumper JU1 (see Table 7). *Default position. __________________________________________________________________ Maxim Integrated Products   5 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Figure 1. MAX14566E EV Kit Schematic __________________________________________________________________ Maxim Integrated Products   6 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E 1.0’’ 1.0’’ Figure 2. MAX14566E EV Kit Component Placement Guide— Component Side Figure 3. MAX14566E EV Kit PCB Layout—Component Side 1.0’’ Figure 4. MAX14566E EV Kit PCB Layout—GND Layer 2 __________________________________________________________________ Maxim Integrated Products   7 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E 1.0’’ Figure 5. MAX14566E EV Kit PCB Layout—PWR Layer 3 1.0’’ Figure 6. MAX14566E EV Kit PCB Layout—Solder Side __________________________________________________________________ Maxim Integrated Products   8 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Ordering Information PART TYPE MAX14566EEVKIT# EV Kit #Denotes RoHS compliant. __________________________________________________________________ Maxim Integrated Products   9 MAX14566E Evaluation Kit Evaluates: MAX14566AE /MAX14566BE/MAX14566E Revision History REVISION NUMBER REVISION DATE 0 4/11 DESCRIPTION Initial release PAGES CHANGED — Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ©  2011 Maxim Integrated Products 10 Maxim is a registered trademark of Maxim Integrated Products, Inc.