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Evaluates: MAX14970

MAX14970 Evaluation Kit

General Description

The MAX14970 evaluation kit (EV kit) provides a proven

design to evaluate the MAX14970 dual-channel buffer.

The EV kit contains four sections: an application circuit,

characterization circuit, and two sets of calibration traces.

The application circuit is designed to demonstrate the

device’s use in redriving serial-ATA (SATA) signals and

SATA cable detection. This section of the EV kit operates

from an external +5V supply that is regulated by an on-

board LDO to +3.3V, which powers the device. All traces

in the application circuit are 100Ω differential controlled-

impedance traces.

The characterization circuit is provided for eye diagram

evaluation using SMA connectors and 50Ω controlled-

impedance traces. This section is powered by an external

+3.3V power supply.

Features

● Application Circuit with SATA Input/Output

● Eye Diagram Test Circuit with SMA Inputs/Outputs

● Calibration Traces (50Ω Load Trace and

Through Trace)

● Proven PCB Layout

● Fully Assembled and Tested

Quick Start (Application Circuit)

Recommended Equipment

• MAX14970 EV kit

• +5V power supply

• Two SATA cables

• SATA device (e.g., a hard drive)

• SATA host (e.g., a PC)

Procedure

The MAX14970 EV kit is fully assembled and tested.

Follow the steps below to verify board operation:

1) Verify that all jumpers are in their default position, as

shown in Table 1.

2) Connect the first SATA cable from the PC to the host

(J1) connector on the EV kit.

3) Connect the second SATA cable from the device (J2)

connector to the SATA device.

4) Verify communication between the host PC and SATA

device.

19-6789; Rev 0; 9/13

Ordering Information appears at end of data sheet.

JUMPER SHUNT POSITION

JU1, JU5 1-2

JU2, JU3, JU7, JU8, JU9 2-3

JU4 Installed

Table 1. Default Shunt Positions

Summary of content (13 pages)

PAGE 1
Evaluates: MAX14970 MAX14970 Evaluation Kit General Description The MAX14970 evaluation kit (EV kit) provides a proven design to evaluate the MAX14970 dual-channel buffer. The EV kit contains four sections: an application circuit, characterization circuit, and two sets of calibration traces.
PAGE 2
Evaluates: MAX14970 MAX14970 Evaluation Kit Detailed Description of Hardware The MAX14970 evaluation kit (EV kit) evaluates the MAX14970 dual-channel buffer. The device is designed to redrive SATA and eSATA signals. The EV kit is divided into four sections: application circuit, characterization circuit, and two sets of calibration traces. The user can also connect directly to a +3.3V supply, which is available on a SATA power connector.
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Evaluates: MAX14970 MAX14970 Evaluation Kit Output Preemphasis (JU2, JU3) The host and device can be evaluated with or without output preemphasis. Configure JU2 to enable/disable the host output (HAP, HAM) preemphasis and JU3 to enable/ disable the device output (DBM, DBP) preemphasis (see Tables 4 and 5). Out-of-Band (OOB) Mode Selection (JU8) The application circuit provides full OOB signal support through high-speed OOB-detection circuitry.
PAGE 4
Evaluates: MAX14970 MAX14970 Evaluation Kit Output Preemphasis (JU7) The characterization circuit channel A can be evaluated with or without output preemphasis. Configure JU7 of the characterization circuit channel A to enable/disable output preemphasis (See Table 8). OOB Mode Selection (JU9) The characterization circuit provides full OOB signal support through high-speed OOB-detection circuitry. The SATA range used can be selected through configuration of jumper JU8 (see Table 9).
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Evaluates: MAX14970 MAX14970 Evaluation Kit Component List DESIGNATION C1–C8, C14–C17, C22–C25 C9, C18, C26, C27 QTY DESCRIPTION DESIGNATION QTY JU4 1 2-pin header, 0.1in center 16 0.
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MAX14970 Evaluation Kit Evaluates: MAX14970 Figure 1a. MAX14970 EV Kit Schematic—Application Circuit (Sheet 1 of 3) www.maximintegrated.
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MAX14970 Evaluation Kit Evaluates: MAX14970 Figure 1b. MAX14970 EV Kit Schematic—Characterization Circuit (Sheet 2 of 3) www.maximintegrated.
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MAX14970 Evaluation Kit Evaluates: MAX14970 Figure 1c. MAX14970 EV Kit Schematic—Calibration Traces (Sheet 3 of 3) www.maximintegrated.
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MAX14970 Evaluation Kit 1.0” Figure 2. MAX14970 EV Kit Component Placement Guide— Component Side www.maximintegrated.com Evaluates: MAX14970 1.0” Figure 3.
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MAX14970 Evaluation Kit 1.0” Figure 4. MAX14970 EV Kit PCB Layout—Inner Layer 2 www.maximintegrated.com Evaluates: MAX14970 1.0” Figure 5.
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Evaluates: MAX14970 MAX14970 Evaluation Kit 1.0” Figure 6. MAX14970 EV Kit PCB Layout—Solder Side 1.0” Figure 7. MAX14970 EV Kit Component Placement Guide— Solder Side www.maximintegrated.
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MAX14970 Evaluation Kit Evaluates: MAX14970 Ordering Information PART MAX14970EVKIT# #Denotes RoHS compliant. www.maximintegrated.
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Evaluates: MAX14970 MAX14970 Evaluation Kit Revision History REVISION NUMBER REVISION DATE 0 9/13 DESCRIPTION Initial release PAGES CHANGED — For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied.