Evaluates: MAX4986 19-5166 Rev 0 2/10 MAX4986 Evaluation Kit General Description Features The MAX4986 evaluation kit (EV kit) provides a proven S One SATA Host Connector design to evaluate the MAX4986 SAS/SATA 2:1/1:2 mul- S Two SATA Device Connectors tiplexer/demultiplexer. The EV kit contains four sections: S Application Circuit with SATA Inputs/Outputs an application circuit, characterization circuit, and two S Eye Diagram Test Circuit with SMA Inputs/ sets of calibration traces. Outputs The application circuit is designed to demonstrate the MAX4986 in multiplexing and equalizing SAS/SATA sig- S Calibration Traces (50I Load Trace and Through Trace) nals. This section of the EV kit operates from an external +5V supply that is regulated by an on-board LDO to S Proven PCB Layout +3.3V, which powers the MAX4986 (U1). All traces in S Fully Assembled and Tested the application circuit are 100I differential controlled- impedance traces. The characterization circuit is provided for eye diagram evaluation using SMA connectors and 50I controlled- Ordering Information impedance traces. This section is powered by an exter- nal +3.3V power supply. PART TYPE MAX4986EVKIT+ EV Kit For information on the specifications for SATA interfaces, +Denotes lead(Pb)-free and RoHS compliant. refer to documents defined by the 2.6 release from the Serial ATA industry work group (www.serialata.org), or if superceded, by the most recently released document from the ATA ANSI work group (www.t13.org). Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION Edge-mount receptacle SMA C1, C3, C4, C9, 0.1FF Q10%, 16V X7R P1, P2, P11P18 10 connectors C10, C19, C22, 10 ceramic capacitors (0603) C27, C28, C37 Murata GRM188R71C104K R1 1 300I Q5% resistor (0603) R2R8, R10R15, 10FF Q20%, 6.3V X5R 19 10kI Q5% resistors (0603) R17R22 C2, C25 2 ceramic capacitors (0603) Murata GRM188R60J106M R9 1 0I Q5% resistor (0603) R34, R35 2 49.9I Q1% resistors (0402) C5C8, C11C18, 0.01FF Q5%, 25V X7R C23, C24, C35, 20 ceramic capacitors (0402) SW1, SW2, SW3 3 8-channel SPST DIP switches C36, C38C41 Murata GRM155R71E103J TP1 1 Red multipurpose test point TP2, TP3 2 Black multipurpose test points 1FF Q10%, 16V X5R C20, C21, C42 3 ceramic capacitors (0603) SAS/SATA multiplexers Murata GRM188R61C105K U1, U2 2 (42 TQFN-EP*) Maxim MAX4986CTO+ 0.1FF Q10%, 16V X7R C26 1 ceramic capacitor (0402) 500mA linear regulator Murata GRM155R71C104K U3 1 (8 TDFN-EP*) Maxim MAX8902AATA+ D1 1 Red LED (0603) H1 1 Disk drive power connector 2 Shunts 7-position SATA vertical PCB: MAX4986 EVALUATION J1, J2, J3 3 1 connectors KIT+ JU1 1 2-pin header *EP = Exposed pad. JU2 1 3-pin header Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX4986 Evaluation Kit Component Supplier SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the MAX4986 when contacting this component supplier. 8) The host should recognize DEVICE A as a hard Quick Start drive. DEVICE A can be written to during this time. Required Equipment The hard drives must be preformatted. Refer to the MAX4986 EV kit operating system instructions for mounting and installing the hard drives. +5V, 200mA power supply 9) Change SEL to the high position on position 1 of Two SATA cables SW1. The host should recognize DEVICE B as a Two SATA devices (e.g., hard drives) hard drive. DEVICE B can be written to during this SATA host (e.g., PC) time. Procedure Detailed Description of Hardware The MAX4986 EV kit is fully assembled and tested. The MAX4986 evaluation kit (EV kit) evaluates the Follow the steps below to verify board operation: MAX4986 SAS/SATA 2:1/1:2 multiplexer/demultiplexer. 1) Verify that jumpers JU1 and JU2 are in their default The MAX4986 is designed to multiplex and equalize positions, as shown in Table 1. SAS and SATA signals. The EV kit is divided into four 2) Verify that switch settings for SW1 and SW2 are in sections: application circuit, characterization circuit, and two sets of calibration traces. the low position. 3) Connect a SATA source to J3 (HOST) on the The application circuit utilizes 100I differential con- MAX4986 EV kit. trolled-impedance traces and provides three SATA connectors (J1, J2, J3), allowing for evaluation of the 4) Connect a SATA cable A from J1 (DEVICE A) to the MAX4986 in a SAS/SATA environment. J1 and J2 are first SATA hard drive A. Connect a second SATA wired as devices for demonstration of the failsafe con- cable B from J2 (DEVICE B) to the second SATA figuration. J3 is wired as the host. The MAX4986 can hard drive B. also operate with two hosts and one device, but the EV 5) Apply +5V between VIN and GND. kit is wired for only the failsafe configuration. To oper- 6) Power the hard drives. ate the EV kit with two hosts and one device, the three SATA connectors (J1, J2, J3) need to be installed on the 7) Enable the MAX4986 by driving EN high on position backside of the EV kit. Then J1 and J2 become the host 8 of SW2. connectors and J3 becomes the device. Table 1. Jumper Descriptions (JU1, JU2) JUMPER SHUNT POSITION DESCRIPTION Connects the +3.3V regulated supply to the MAX4986. Verify the supply by mea- 1-2* suring the voltage between TP1 and TP2. JU1 Open Apply an external +3.3V regulated supply between TP1 and TP2. 1-2* VL is powered by on-board VCC. JU2 2-3 VL is powered externally by applying a voltage to EXTVL. *Default position. 2 Evaluates: MAX4986