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3.3 Selecting Clock Supply and Replacing Oscillator Circuit Boards
(1) Clock Supply to the MCU
There are two ways to supply a clock to the MCU, using the oscillator circuit of the emulation pod
or using the oscillator circuit on the target system. Table 3.1 lists the factory-settings of each clock
supply. The clock supply can be set in the Init dialog box when starting up the emulator debugger or
inputting CLK command on the script window.
Table 3.1 Clock supply to the MCU
Clock Description Display of emulator debugger Default setting
X
IN-XOUT
XCIN-XCOUT
Internal oscillator circuit of emulation pod
(OSC-3: 16.0 MHz)
Target system
Internal oscillator circuit of emulation pod
(32.768 kHz)
Target system
Internal
External
External
Internal
Yes
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Yes
IMPORTANT
Note on Changing the Clock Supply:
• For pins XCIN-XCOUT, it is necessary to set the switches in the emulation pod. For
details, refer to "3.4 Switch Settings" (page 34).
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