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MAX9257/MAX9258 Evaluation Kit
17) Click on the Deserializer MAX9258 tab to move to
the Deserializer MAX9258 tab sheet (Figure 4).
18) Press the Read MAX9258 & 9257 button to read all
the registers of the MAX9258 and MAX9257.
19) Set both MAX9258 REG03 and MAX9257 REG03
ETOCNT to 0100 by selecting the ETOCNT drop-
down list. Press the Write button on the right of the
Reg03 controls.
20) Set both MAX9258 REG07 CTO and MAX9257
REG08 CTO to 111 by selecting the CTO drop-
down list. Press the Write button on the right of the
Reg07 controls.
21) Click on the Serializer MAX9257 tab to move to the
Serializer MAX9257 tab sheet (Figure 5).
22) Enable the MAX9257 REG04 SEREN bit by select-
ing enable in the SEREN drop-down list. Press the
Write button on the right of the Reg04 controls.
23) Click on the Camera Control tab to move to the
Camera Control tab sheet (Figure 6).
24) Press the Slow Blink D4 button and verify that LED
D4 flashes for about five seconds.
25) Press the Enable PCLK_IN/HSYNC_IN/VSYNC_IN
button and verify that LOCK indicator LED D1
turns on.
26) Use the oscilloscope to check the waveforms dur-
ing the evaluation.
Detailed Description of Software
The MAX9257/MAX9258 EV kit software contains four
tab sheets: ECU Control , Deserializer MAX9258 ,
Serializer MAX9257 , and Camera Control .
Warning: When the MAX9257/MAX9258 UART baud
rate ranges are changed, they do not take effect until
the next control channel is entered. The ECU baud rate
should not be changed during the current control
channel.
ECU Control Tab
The ECU Control tab sheet (Figure 3) lets the ECU con-
figure the MAX9258, MAX9257, and the camera.
The ECU UART baud rate can be selected by choosing
the appropriate baud rate in the Select ECU UART
Baud Rate drop-down list. By default, the UART speed
is 400kbps. In base mode, the UART baud rate should
not be higher than 4.25Mbps.
Except for the menu-driven commands that can be
generated on the Deserializer MAX9258 , Serializer
MAX9257 , and Camera Control tab sheets, the ECU
commands can be written by typing commands in the
ECU Writes N Bytes to MAX9257/58/Camera edit box.
Similarly, the ECU commands can be read by typing
commands in the ECU Reads N Bytes from
MAX9257/58/Camera edit box. The write or read com-
mands are not executed until the corresponding Write
or Read button is pressed. Follow the instructions dis-
played on the software GUI.
When the EV kit is powered up the first time, and the
MAX9257 is configured to be powered up remotely by
the ECU (REM is high), press the ECU Wakes Up
MAX9257 button to wake up the MAX9257. Refer to the
Remote Power-Up of the MAX9257 (REM = Pulled Up
to V CC ) section in the MAX9257/MAX9258 IC data
sheet for timing requirements of the remote wake-up.
Check the Prefix a SYNC frame everytime a
read/write command is sent checkbox when a SYNC
frame is desired before sending a command to the
MAX9258, MAX9257, or the camera. A SYNC frame is
needed only once every control channel.
Check the Postfix an END frame everytime a read/write
command is sent checkbox when an END frame is
desired after sending a command to the MAX9258,
MAX9257, or the camera. Do not send END frame after a
READ command. In a real application, the ECU can send
END frame after the READ operation is completed.
Press the Reset the EVKIT button to reset the EV kit
software and hardware. The user must manually dis-
connect and reconnect the power supply to reset the
EV kit hardware.
Deserializer MAX9258 Tab
On the Deserializer MAX9258 tab sheet (Figure 4), the
ECU can write or read all registers on the MAX9258 by
pressing the Write or Read buttons on the right of each
register. Refer to the MAX9257/MAX9258 IC data sheet
for the definition of each register.
Four registers on each of the MAX9258 and MAX9257
should have the same values. They should be config-
ured simultaneously for the SerDes pair to work proper-
ly. Check the Write Both 9258&9257 checkbox to
enable the write operation of the two devices on the
same control channel.
On the bottom-left side of the software window, press
the Reset MAX9258 GUI button to set all of the GUI
values to the MAX9258 power-on-reset values. No
operations are executed on the actual MAX9258
device. The other four buttons: Read MAX9258 & 9257 ,
Write MAX9258 & 9257 , Read MAX9258 , and Write
MAX9258 let the user read or write to the MAX9258 and
the MAX9257 simultaneously or individually.
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