INTRODUCTION
I-E96-202B
2 - 1
SECTION 2 - DESCRIPTION AND OPERATION
INTRODUCTION
The IMMFP02 Multi-Function Processor Module functions like
a series of functional blocks working together. To explain how
the MFP module works, this section shows MFP module func-
tionality as a block diagram (see Figure
) and then explains
each block in the following text.
MICROPROCESSOR
The microprocessor, operating at 16 megahertz, enables mod-
ule operation and control. The operating system instructions
and function code library of the microprocessor reside in read
only memory (ROM). Since the microprocessor is responsible
for overall module operation, it communicates with all the
functional blocks. The microprocessor also constantly triggers
the machine fault timer (MFT) circuit. If the microprocessor or
module software fails and the MFT circuit is not reset, the MFT
Figure 2-1. IMMFP02 Module Functional Block Diagram
MICROPROCESSOR
ROM
DATA BUS
TP50333B
SERIAL
PORTS
TO
P2
I/O
EXPANDER
BUS
I/O
SECTION
LEDs,
SWITCHES
AND
CONTROL
OUTPUT
DMA SECTION
REDUNDANCY
LINK
CONTROLWAY
DCS
LINK
NVRAM
RAM
MACHINE
FAULT
TIMER
CLOCK/
TIMER
TO
P3
A
B
TO
P1
TO
P3
TO
P3
