Rkics Power Source Selection Header (W1); Mcu Bus Frequency Selection Header (W2) - Motorola M68ICS08RK User Manual

2.3.2.1 RKICS Power Source Selection Header (W1) (For Target Cable Connection)
NOTE:
NOTE:

2.3.2.2 MCU Bus Frequency Selection Header (W2)

M68ICS08RK In-Circuit Simulator — Rev. 1
MOTOROLA
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).
The target system V
DD
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
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
Table 2-2. MCU Bus Frequency Formula
W2 Setting
1-2
Crystal Oscillator Frequency divided by 4 = Bus Frequency
(factory
Bus Frequency divided by 256 = Baud Rate
default)
Crystal Oscillator Frequency divided by 2 = Bus Frequency
2-3
Bus Frequency divided by 256 = Baud Rate
Hardware Installation
Configuring the In-Circuit Simulator Board
must match the ICS voltage setting in either case.
W1
1
2
W2
3 2 1
Formula
Hardware Installation
User's Manual
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