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MB96300 Super Series Hardware Manual
5.
if the EMI measurements does not fulfill the
requirements, you may either
reduce the modulation degree at the same
frequency resolution
(this may improve the reduction in the upper
frequency band > 100 MHz, but decrease the
reduction of the fundamental < 100 MHz)
or
increase the modulation degree at a lower
frequency resolution
(this may improve the reduction of the fundamental
< 100 MHz, but worsen the reduction in the upper
frequency band > 100 MHz)
6.
repeat item 3) with the new setting and continue
until the best settings is identified
Note: NOT ALL SETTINGS ARE ALLOWED ON EVERY DEVICE!
Please consider the actual maximal allowed clock frequency of the MCU (refer to the data sheet).
Note: SETTING RESTRICTIONS FOR FLASH DEVICES
When using the clock modulator, extra care is needed for Flash devices. Since the number of wait state
insertion of our Flash memory interface is limited, it is not possible to set arbitrarily the clock modulator
parameters. The maximum frequency allowed will depend on the flash access speed. Please refer to the
Flash chapter of the hardware manual for further details.
CHAPTER 7 CLOCK MODULATOR
e.g. resolution: 7, degree: 1, CMPR =
0x3F9
or
e.g. resolution: 5, degree: 3, CMPR =
0x0771
189
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