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MMCCMB2103UM/D
User’s Manual
23
Performing the CMB2103 Selftest
need to replace the platform-board fuse.)
10. This completes system connections: you are ready to perform a selftest, per the instructions
of subsection 2.3, below. You are ready to begin debugging or other development activities,
per the instructions of Chapter 3.
2.3 Performing the CMB2103 Selftest
Once you have configured your CMB2103, you can perform a selftest of its components.
1.
Make sure that CMB2103 power is turned off or disconnected. Green power LEDs DS6 and
DS7 should be out.
2.
Set switch S2 for the built-in selftest: all subswitches ON.
3.
Set switch S3 subswitches 1 and 4 ON; set S3 subswitches 2 and 3 OFF.
4.
Turn on power. Green LEDs DS6 and DS7 come on to confirm power, and the CMB2103
begins its selftest.
5.
LEDs DS2 through DS5 light and go out during the test, according to the sequence of Table
2-4.
6.
Then individual LEDs light several times in the sequence DS5, DS4, DS3, and DS2.
7.
When all four LEDs go out, the CMB2103 has passed the selftest. (If any LEDs stay lit, the
CMB2103 has failed the selftest: contact Motorola customer support for assistance.)
8.
Disconnect power.
9.
Configure switch S2 for your next development activity before restoring power to the
CMB2103.
Table 2-4 CMB2103 Selftest LED Sequence
DS2
DS3
DS4
DS5
Test Action
ON
OFF
ON
OFF
8-bit write to memory.
OFF
ON
OFF
ON
8-bit read from memory.
1
NOTES:
1. Should all four LEDs stay lit at this point, the CMB2103 has failed the SRAM test,
aborting the rest of the selftest. Contact Motorola customer support for assis-
tance.
ON
OFF
ON
OFF
16-bit write to memory.
OFF
ON
OFF
ON
16-bit read from memory.
1
ON
OFF
ON
OFF
32-bit write to memory.
OFF
ON
OFF
ON
32-bit read from memory.
1
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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