Datasheet
Quick Start
Recommended Equipment
• MAX9257A/MAX9258A EV kit (USB cable included)
• User-supplied Windows 2000/XP- or Windows Vista-
compatible PC with a spare USB port
• 5V, 500mA power supply
• 4-channel oscilloscope
Refer to the MAX9257A/MAX9258A IC data sheet while
using this EV kit for a detailed description of the SerDes
pair features.
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and under-
lined refers to items from the Windows operating system.
Procedure
The EV kit is fully assembled and tested. Follow the
steps below to verify board operation. Caution: Do not
turn on the power supply until all connections are
completed.
1) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the EV kit software,
9257A_8ARxx.ZIP. Save the EV kit software to a
temporary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the tempo-
rary folder. The program files are copied and icons
are created in the Windows Start | Programs
menu.
3) Verify that all the jumpers are set in their default
positions. See Table 1 for default shunt positions.
4) Connect the 5V power supply to the +5V and GND
pads on both sides of the EV board. Keep the
power off.
5) Connect the JAE LVDS cable between J2 and J7.
6) Connect Ch1 of the oscilloscope to J1-35 (ECU TX
line).
7) Connect Ch2 of the oscilloscope to J1-37 (ECU RX
line).
8) Connect Ch3 of the oscilloscope to J5-12
(MAX9258A CCEN pin).
9) Connect the USB cable between the PC and J3
(Attention: not J8).
10) Turn on the 5V power supply. Verify that D3 and D4
green LEDs are lit.
11) Start the MAX9257A/MAX9258A program by open-
ing its icon in the Start
menu.
12) Press the Yes button on the popup window (Figure
1), which verifies if the ECU remotely wakes up the
MAX9257A. If the REM pin of the MAX9257A is set
to high, the ECU should wake up the MAX9257A by
setting the REG08 PD bit to low. If the REM pin of
the MAX9257A is set to low, the MAX9257A is pow-
ered up when V
CC
is applied.
13) The next popup window (Figure 2) asks if you want
to load a previous EV kit setting from a file. If this
is the first time the software is run, you can choose
from three EV kit setting files included with
the software: NeverComeBackSettings.txt,
FiniteCTOSettings.txt, or I2CSettings.txt. Press
the No button.
14) Verify that the software main window shows up next
(Figure 3).
15) Verify that the Hardware: Connected message is
displayed on the status bar of the software main
window. This indicates the proper connection of the
EV kit.
16) Press the ECU Wakes Up MAX9257A button on the
ECU Control tab sheet.
17) Click on the Deserializer MAX9258A tab to move to
the Deserializer MAX9258A tab sheet (Figure 4).
Evaluates: MAX9257A/MAX9258A
MAX9257A/MAX9258A Evaluation Kit
_______________________________________________________________________________________ 3
Figure 1. MAX9257A/MAX9258A Evaluation Kit Software—
MAX9257 REM Status
Figure 2. MAX9257A/MAX9258A Evaluation Kit Software—
Load Previous EV Kit Settings