Selecting Clock Supply - Renesas M30830T-RPD-E User Manual

Table 3.4 Switch settings of the M30830T-RPD-E (4/4)
Note on PLL Function:

3.3 Selecting Clock Supply

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 3.4 shows the factory-settings of each clock
supply.
Table 3.4 Clock supply to the MCU
Clock
X
IN
X
CIN
Notes on Changing Clock Supply:
Signal Switch
JP2
PLL
M30830T-RPDM
Board
• To use the PLL function, the following settings are necessary.
(1) Set SW1 to PLL.
(2) Set SW2 to P86.
(3) Set JP2 of MCU board M30830T-RPDM to ON.
(4) Set port P87 direction register (bit 7 of 03C6h) to input.
(5) Set port XC switch bit (bit 4 of 0006h) to I/O function.
(6) Set port P86 direction register (bit 6 of 03C6h) to input.
(7) Connect the VSS to port P86.
Description
Internal oscillator circuit of emulation pod
(OSC-3: 20 MHz)
-X
OUT
Target system
Internal oscillator circuit of emulation pod
(32.768 KHz)
-X
COUT
Target system
• Clock supply can be set by the Init dialog box when starting up the emulator
debugger or inputting CLK command on the script window.
• For pins X
CIN
using the clock on the target system. For details, refer to "3.2 Switch Settings" (page 25).
Setting
JP2
PLL
Use this setting normally.
ON OFF
(Factory-setting)
JP2
PLL
Set this when using the PLL function.
OFF
ON
IMPORTANT
Display of emulator debugger Factory-setting
IMPORTANT
and X , it is necessary to set the switches in the emulation pod when
COUT
( 29 / 74 )
Description
Internal
External
Internal
External
Yes
-
Yes
-