MAX4951EVKIT+ Maxim Integrated Products, MAX4951EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX4951EVKIT+
• Description: EVAL KIT FOR MAX4951
• Manufacturer: Maxim Integrated Products

Specifications of MAX4951EVKIT+

• Main Purpose: Interface, Buffer, SATA
• Utilized Ic / Part: MAX4951
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MAX4951 Evaluation Kit
Before beginning, the following equipment is needed:
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The MAX4951 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,
2) Connect the first SATA-to-SATA/eSATA-to-SATA
3) Connect the second SATA-to-SATA/eSATA-to-
4) Verify communication between the host PC and
Table 1. Default Shunt Positions
The MAX4951 evaluation kit (EV kit) evaluates the
MAX4951 dual-channel buffer. The MAX4951 is designed
to redrive serial-ATA (SATA) and eSATA Gen I and Gen II
signals. The EV kit is divided into four sections: application
circuit, characterization circuit, and two calibration traces.
The application circuit utilizes 100Ω differential con-
trolled impedance traces and provides two SATA con-
nectors (J1 and J2), allowing for evaluation of the
MAX4951 in a SATA environment. The characterization
circuit utilizes 50Ω controlled impedance traces and
SMA input/output connectors, allowing for eye dia-
grams and input/output return loss measurements.
The lower half of the EV kit provides two sets of calibra-
tion traces, all of which are matched to the trace
lengths in the characterization circuit. These traces
provide a reference for determining the performance of
the MAX4951 device only, when evaluated in the char-
acterization circuit.
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Detailed Description of Hardware
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MAX4951 EV kit
+5V power supply
Two SATA-to-SATA or eSATA-to-SATA cables
SATA device (e.g., a hard drive)
SATA host (e.g., a PC)
as shown in Table 1.
cable from the PC to the host (J1) connector on the
EV kit.
SATA cable from the device (J2) connector to the
SATA device.
SATA device.
Quick Start (Application Circuit)
JU1, JU4, JU5
JU2, JU3, JU7
JUMPER
Recommended Equipment
SHUNT POSITION
1-2
2-3
Procedure
The application circuit (U1) provides the means for eval-
uating the MAX4951 in a SATA application. This section
of the EV kit provides two SATA connectors (J1 and J2),
one for connection to a SATA host (e.g., PC) and the
other for connection to a SATA device (e.g., hard drive).
The application circuit must be powered by +3.3V.
There are two ways to get this voltage, through the on-
board LDO (U3) or connecting directly to a +3.3V sup-
ply. When using the on-board voltage regulator, the
LDO can be powered by the 4-pin Molex connector
(H1) or by a +5V external supply connected to the VIN
and GND pads. When using the on-board LDO to sup-
ply power, there is a power LED (D1) to indicate the
presence of +3.3V at VCC.
The user can also connect directly to a +3.3V supply,
which is available on a SATA power connector. The
shunt should be removed from jumper JU4 and a wire
connected from the SATA power pin to pin 2 (right-
most pin) of jumper JU4 (see Table 2).
The MAX4951 (U1) is enabled/disabled by configuring
jumper JU1 (see Table 3). When disabled, the
MAX4951 buffers are disabled and the part is placed in
a low-power standby mode.
Table 2. Jumper JU4 Function
* Default position.
Table 3. Jumper JU1 Function
* Default position.
POSITION
POSITION
Installed*
installed
SHUNT
SHUNT
1-2*
Not
2-3
external supply
on-board LDO
VCC PIN (U1)
Connected to
Connected to
Connected to
Connected to
EN PIN
output
+3.3V
GND
(U1)
Application Circuit (U1)
Buffers enabled for normal
operation
Buffers disabled and device
is in low-power standby mode
U1 powered by LDO output,
+3.3V
Powered by +3.3V from an
external supply or SATA
power connector
Device Enable (JU1)
DESCRIPTION
DESCRIPTION
Input Supply (VIN)