Fujitsu FR81S 用户手册
CHAPTER 47: ON CHIP DEBUGER (OCD)
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: ON CHIP DEBUGGER : OCD
FUJITSU SEMICONDUCTOR CONFIDENTIAL
26
5.3.1. Clock Setting
Clock setting is shown.
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When the device is connected to the OCD tool, the main clock does not stop oscillating. It is, however,
possible to read from the register CMONR.MCRDY and write to the register CSELR.MCEN., similarly
to the case when not connected.
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When the device is communicating via high-speed UART or phase modulation UART, PLL does not
stop oscillating. It is, however, possible to read from the register CMONR.PCRDY and write to the
register CSELR.PCEN, similarly to the case when not connected. In addition, since PLL continues to
oscillate, changes in settings of the registers shown below will have no effect. It is, however, possible to
read and write the registers shown below, similarly to the case when not connected.
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PLLCR.ODS
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PLLCR.PMS
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PLLCR.PDS
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CCPSDIVR.PODS
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CCPLLFBR.IDIV
MB91520 Series
MN705-00010-1v0-E
2037