Renesas M306K9T2-CPE, User Manual

Page: 33 / 56

( 33 / 56 )
(3) Changing the Internal Oscillator Circuit of the Emulator
An oscillator circuit board for 16 MHz (OSC-3) is mounted on this product. To use this product at
a frequency other than 16 MHz, build the desired oscillator circuit on the included OSC-2 oscillator
circuit board (bare board) and replace the board installed in this product when shipped from the
factory.
Figure 3.3 shows an external view of the OSC-2 oscillator circuit board (bare board) and where
connector pins are located. Figure 3.4 shows the circuitry of the OSC-2 oscillator circuit board (bare
board). Use the number of oscillator circuits recommended by the oscillator manufacturer.
Figure 3.3 External view of the oscillator board (OSC-2) and connector pin assignment
Figure 3.4 Circuit of the oscillator circuit board (OSC-2)
J1-4: GND
J1-3: Oscillator output
J1-2: GND
J1-1: VCC
IC1
R1
C2 C1
X1 ,X2
C L K
Vcc
G N D
R2
J1-3
10 11 8 9
2 1
4 3
6 5
12 13
C3
IC1
J1-1
J1-2
J1-4
G N D
IC1
* *
X3
*
IC1
14
7
* X1: 5.08-mm-pitch 2-pin oscillator
X2: 2.54-mm-pitch 2-pin oscillator
X3: 2.54-mm-pitch 3-pin oscillator
IC1: Inverter (Unbuffer)