_________________________________________________________________ Maxim Integrated Products 4

MAX4951C Evaluation Kit

Evaluates: MAX4951C

Device Enable (JU5)

The characterization circuit is enabled/disabled by

configuring jumper JU5 (see Table 7). When disabled,

the device buffers are powered down and the part is

placed in a low-power mode.

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). When the MODE pin is set to

GND, the SATA version 3.0 range is used. When the MODE

pin is set to VCC, the SATA version 2.6 range is used.

Calibration Traces

The bottom half of the EV kit provides two sets of

calibration traces that can be used for further analysis.

The lengths of the calibration traces are matched to the

traces going from the SMA connector to the characteriza-

tion circuit. The first calibration trace includes a 50I load

termination and the second calibration trace is a through

trace.

Table 7. Jumper JU5 Function (U2 EN)

Table 8. Jumper JU7 Function (U2 PA)

*Default position.

Table 9. Jumper JU8 Function (U2 MODE)

*Default position.

*Default position.

SHUNT

POSITION

EN PIN (U2)

DESCRIPTION

1-2*

Connected to

+3.3V

Buffers enabled

for normal operation

2-3

Connected to

GND

Buffers disabled and the

device is in low-power

standby mode

SHUNT

POSITION

PA PIN (U2)

DESCRIPTION

1-2

Connected to

+3.3V

Channel A output

preemphasis enabled

2-3*

Connected to

GND

Channel A output

preemphasis disabled

Not installed

Not connected

SHUNT

POSITION

MODE PIN

(U2)

DESCRIPTION

1-2

Connected to

VCC

SATA version 2.6 range

is used

2-3*

Connected to

GND

SATA version 3.0 range

is used