Hardware Installation
Configuring the In-Circuit Simulator Board
M68ICS08RK In-Circuit Simulator — Rev. 1
User’s Manual
MOTOROLA
Hardware Installation
25
2.3.2.1 RKICS Power Source Selection Header (W1) (For Target Cable Connection)
Use W1 to select the power source for the RKICS and target system’s MCU and
external circuitry (refer to
Figure 2-4
). To isolate the RKICS and target system
power, ensure that no jumper is installed on jumper header W1 (factory default).
Install a jumper header on W1 to use the RKICS on-board power to supply
power to the the target system’s MCU and external circuitry. When a jumper is
installed on jumper header W1, power is supplied to the target system via J1
pins 24, 26, and 18 and J3 pin 11 (TGT-VDD).
NOTE:
The target system V
DD
must match the ICS voltage setting in either case.
NOTE:
This is not applicable to the MON08 connection. There is no TGT-VDD on the
MON08 connector, J2.
Figure 2-4. RKICS Power Source Selection Header
2.3.2.2 MCU Bus Frequency Selection Header (W2)
Use jumper header W2 to select the MCU bus speed and the I/O baud rate.
Install a jumper on jumper header W2 pins 1 and 2 (factory default) to set the
MCU bus frequency to 2.4576 MHz and the I/O baud rate to 9600. (Refer to
Figure 2-5
.) Install a jumper on jumper header W2 pins 2 and 3 to set the MCU
bus frequency to 4.9152 MHz and the I/O baud rate to 19,200. Refer to
Table 2-2
for the MCU bus frequency formula.
Figure 2-5. MCU Bus Frequency Selection Header
1
2
W1
Table 2-2. MCU Bus Frequency Formula
W2 Setting
Formula
1-2
(factory
default)
Crystal Oscillator Frequency divided by 4 = Bus Frequency
Bus Frequency divided by 256 = Baud Rate
2-3
Crystal Oscillator Frequency divided by 2 = Bus Frequency
Bus Frequency divided by 256 = Baud Rate
3
2
1
W2
