HP M2350A Service Manual page 70

Understanding the Computer Module
The Function Cards
q
Normal 16 x 20 pixels
o Dense 12 x 16 pixels
n
Attributes resolution 256 x 256 bytes
n
Can drive a master and up to 3 slave displays.
= Color luminance equalization.
n
50/60Hz operation, software switchable.
Utility CPU
The Utility CPU is a master function card responsible for several interfaces, synchronization
and all the clock signals for the HP Component Central Monitor. The Utility CPU is based
around a 68000 microprocessor and stores the configuration of the system on a 32-kilobyte
EEPROM.
Specifications
CPU. 68HCOOO @ 1oMHz.
EPROM.
64KBytes with 0 wait states.
EEPROM.
32KBytes with 1 wait state.
SRAM.
Unbuffered from 64KBytes to 128KBytes.in steps of 64KBytes (with 0 wait states).
MPB Interface. 8/32KBytes
FIFO-SRAM.
Real Time Clock.
Date and Time (with 1 wait state).
BP HIL Master Link Controller.
With 1 wait state.
Output Register.
8 bit for status LEDs and test signals..
Bus Error Logic.
Minimum 2ms to maximum 4ms delay forced bus error capacity (no delay).
Backup Time (for real time clock).
Minimum of 43 hours.
Synchronizer.
32ms internal frame to SDN Interface.
Clock Generation.
2OMHz
main clock,
16MHz local extension clock,
78,125kHz plug-in module sync. clock,
32ms frame clock,
2ms
sample clock.
Reset Logic.
Minimum 2ms pulse width and between 2ms and 4ms delay from power fail to
system
reset.
Internal Connector.
96-way ABC.
Power Consumption.
Typically 1.6 Watts to a maximum of 2.7 Watts.
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