UTMC OTU/MOVA Handbook
667/HB/31601/000
Page 16
Issue 5
2.6 THE PROCESSOR CARD
The Processor card is a 3U 220mm long, 100mm wide and 17mm high extended
Eurocard. It is a multi-layer PCB, using mostly surface mounted components. It
provides the processing power required by the unit. The Processor is based on
Motorola's Power PC range of 32-bit microprocessors (MPC850) with highly
sophisticated on-chip peripheral capabilities.
The card provides the expansion bus that can extend the system using up to three IO
cards. For details see section 2.10 on page 18.
2.6.1 Processor Card’s Features
The main features of the Processor card are:
a. Battery backup of the entire RAM (see Section 5.6.3).
b. An Expansion Bus for fast card-to-card data transfers. The Processor card can
address up to three IO cards.
c. Three programmable RS232 Serial communications Ports:
Handset RS232 Port.
Auxiliary RS232 Port – for connection to controller.
Modem RS232 Port.
d. A battery backed Real Time Clock.
e. Flash memory for program storage and Journaling File system.
f. ‘Zero-Cross Over’ signal derived from the associated PSU support PCB.
g. Power Fail monitoring (low voltage inhibit)
h. A Watchdog monitor
i. Processor error indication
j. Voltage Regulation (allowing a range of DC input)
k. Power for the modem, with a choice of two voltages
l. Status LED indicators (also see section 5.3 which starts on page 35)
m. Power dissipation less than 100 mW.
n. 10MB Ethernet
2.7 IO CARDS
2.7.1 BUS/MOVA IO Card
The BUS/MOVA IO card is a 3U extended Eurocard. It is a multi-layer PCB, using
mostly surface mount components.
See section 5.6.1 for the part numbers and section 4.6.2 for connection details. The
card is available in two variants, with and without the RS485 interfaces.
Each BUS/MOVA IO card has the following features:
a. 48 x Digital Inputs
b. 16 x Digital Outputs (relays)
c. Expansion Bus connection
d. Card address decode.
e. 4 x RS485 serial channels (not used by UTMC OTU).
