QB-78F1026
CHAPTER 2 SETUP PROCEDURE
R20UT0290JJ0100 Rev. 1.00
Page 15 of 29
Sep 30, 2010
(1) High-speed system clock
The clock settings are listed below.
Table 2-1. Settings for High-Speed System Clock
Type of Clock to Be Used
OSC1
Debugger Setting
(a) When the clock generated within the emulator is used
–
System
(b) When the clock is supplied from the target system
Note
– External
(c) When the oscillator (OSC1) mounted onto the emulator is used
Oscillator mounted
Clock Socket
Note
This setting is not possible when TARGET LED is not lit.
Remarks 1.
Settings other than the above are prohibited.
2.
Selection of (a) or (b) is possible regardless of whether the oscillator is not mounted in the
OSC1socket.
(a) When the clock generated within the emulator is used
Select the “System” in the debugger and select the desired frequency from the drop-down list.
The following frequencies are selectable.
2.00, 3.00, 3.57, 4.00, 4.19, 4.91, 5.00, 6.00, 8.00, 8.38, 10.00, 12.00, 16.00, 20.00 [MHz]
(b) When the clock is supplied from the target system
Select the “External” in the debugger. The clock input from the target system is then used.
Oscillation with the resonator on the target system is not supported. To input a clock from the target
system, input to the clock pin (X2) the square-wave signal with the same voltage potential as that of the
target device supply voltage (V
DD
). Inputting the inverted signal to X1 is not necessary.
The selectable frequencies are same as those of the target device.
(c) When the oscillator (OSC1) mounted onto the emulator is used
Mount an oscillator in the OSC1 socket in the emulator and then select the “Clock socket” in the debugger.
The clock generated from the oscillator mounted on the emulator is used.
The selectable frequencies are same as those of the target device.
As an oscillator
Note
to be mounted in the OSC1 socket in the emulator, use the one that satisfies the
following specifications.
- Supply voltage: 5 V
- Output level: CMOS
Note
An oscillator that uses a resonator cannot be used.
