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1.3.1
Board Interface Connectors
The development system interface is via the single system connector P2, which
is a 9-pin, D-type, through-hole, female, right angle connector (Amp part
number AMP-9726-A) mounted on the top side of the PCB.
The ABICS user target interface is via the target header connector J1, J2, two
40-pin shrouded headers. J1, J2 are positioned to easily interface to a Motorola
M68CLB05C FLEX cable. The FLEX cable connects to the host system
through the appropriate target head adapter.
The ABICS board uses two supply voltages:
•
•
The interface to the host development system uses +5-V TTL (transistor-to-
transistor logic) signaling levels. The interface to the target system uses
signaling levels based on the user-selected supply.
Figure 1-2 shows a functional overview of the system.
PC Host
M68ICS08ABUM/D
Self-tracked +3.0-volt to +5.0-volt regulator supply for the ABICS and
level translation devices
A +5-V supply for the remainder of the logic
RS-232
ICS Interface
Figure 1-2. ICS Functional Overview
CHAPTER 1 – INTRODUCTION
Voltage
MCU
Adjustment
1-5
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