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參數(shù)資料
| 型號： | EB402 |
| 英文描述： | EB402 Evaluation Board user＇s guide 7/01 |
| 中文描述： | EB402評估板用戶指南7月1日 |
| 文件頁數(shù)： | 14/84頁 |
| 文件大?。?/td> | 1014K |
| 代理商： | EB402 |
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Power-Up Sequence
2-5
2.4 Power-Up Sequence
1.
Set the power switch, S3, to the ON position.
2.
Verify that the two surface mounted LEDs illuminate. LED1 is
connected to the 3.3 V regulator, VR1. LED2 is connected to the
1.8 V regulator, VR2. Illumination only indicates that the regulators
are producing an output voltage, not necessarily the specified voltage.
3.
Measure the output voltage of VR1 at TP8. The specied output
voltage is 3.3 V, +/- 5%. The voltage is normally within specication.
If necessary, adjust the voltage with 25-turn potentiometer R11.
4.
Measure the output of voltage regulator VR2 at TP5. The specied
output voltage is 1.8 V, +/- 5%. The voltage is normally within
specication. If necessary, adjust the voltage with 25-turn
potentiometer R12.
5.
Verify that the self-test diagnostic completes successfully. The EB402
runs a self-test diagnostic when it boots from its internal ROM. The
LSI402ZX illuminates LED3 when the test starts and extinguishes
LED3 when the self-test completes successfully. If LED3 remains
illuminated at the end of the self-test, the test failed. Refer to
LSI402ZX Digital Signal Processor User’s Guide and Section 4.1,
“Boot Modes,” page 4-1, for more information about self-test.
6.
If the self-test fails, momentarily press the reset switch, S1, to reset
the board.
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