NEC IE-703116-MC-EM1, User Manual

Page: 23 / 51

CHAPTER 2 NAMES AND FUNCTIONS OF COMPONENTS
User’s Manual U14700EJ2V0UM
23
(2) Changing the crystal oscillator (OSC1) mounted on the IE-703116-MC-EM1 and using it as the internal clock
<1> If a crystal/ceramic resonator is mounted in the CN2 socket, remove it.
<2> Remove the crystal oscillator (OSC1) that is mounted on the option board and mount the oscillator to be
used.
<3> Set JP1 as shown in Table 2-3 (factory settings).
<4> Set the SW1 and CKSEL pins according to the clock mode to be used, as shown in Table 2-3.
<5> Select “Internal” in the clock source selection area in the configuration dialog box on the integrated debugger
(ID850).
Table 2-3. Settings When Changing Mounted Internal Clock
Type of Clock Used Clock
Source
Selection
OSC1 Crystal
Oscillator
CN2
Crystal/Ceramic
Resonator
JP1
Setting
Clock
Mode
SW1 CKSEL
pin
Note
PLL
Direct
PLL
Low-level
input
Change the crystal
oscillator mounted on
IE-703116-MC-EM1
and use it as the
internal clock.
Internal Change
(to other than
4.000 MHz)
Mounting
prohibited
1 2
7
8
Direct
Direct
PLL
High-level
input
Note The input setting to the CKSEL pin is made only when a target system is connected. Leave this pin open
when operating the emulator on a standalone basis.
Figure 2-4. Outline When Changing Mounted Crystal Oscillator and Using It as Internal Clock
IE-703116-MC-EM1
OSC1
Other than
4 MHz
IC20
JP1
IE-V850E-MC
CLKOUT
CKSEL
X1
EVA chip
1-2 shorted
3-4 shorted
5-6 open
7-8 open
Select
on ID850
Crystal
oscillator
Target system
SW1
PLL/Direct
mode
switching
Crystal/ceramic
resonator mounting
prohibited CN2
V850E/IA1
I/O chip
“ Internal ”
Change crystal
oscillator