Chapter 3 Setting Of User Clock; Setting Of Operating Clock - NEC IE-784915-R-EM1 User Manual

In the IE-784000-R, a fixed clock (16 MHz) on the IE-784915-R-EM1 is supplied to the emulation device unless
the clock setting is changed.
Operating the emulation device with an oscillation clock on the target system or an arbitrary clock requires the
setting of the clock setting socket (IC15) and selection of an external clock in the configuration dialog on the integrated
debugger (ID78K4).
See the ID78K/IV Integrated Debugger User's Manual for the setting method using the integrated debugger and
this chapter for operating with an arbitrary clock.

3.1 Setting of Operating Clock

The following operating clocks can be set in the IE-784000-R.
(1) Operation with fixed clock on IE-784915-R-EM1
When an internal clock is selected by the debugger, a fixed clock (16 MHz) on the emulation board is supplied
to the emulation device.
This mode is set after the power of the IE-784000-R is turned on. This mode remains unchanged unless an
external clock is selected.
(2) Operation with arbitrary clock on IE-784915-R-EM1
An arbitrary clock mounted on the clock setting socket (IC15) is supplied to the emulation device by mounting
a crystal oscillator with the same frequency as the clock supplied to the target device on the clock setting socket
on the IE-784915-R-EM1 and selecting an external clock by the integrated debugger (ID78K4).
See 3.2 Attaching Crystal Oscillator for details.
Caution It is not possible to supply the clock from the oscillation clock on the target system to the
emulation device. When operating at a frequency other than 16 MHz, use the method in (2) to
supply the clock at the frequency actually used.

CHAPTER 3 SETTING OF USER CLOCK

25