Issue: 1.0
Technical Description - Circuitry
Thermo Fisher Scientific
SAM12 User Manual 7-1
Chapter 7
Technical Description - Circuitry
provides a general background to the
following description and should be read before proceeding.
Introduction
This section deals with the operation and function of all the major electronic
assemblies which comprise the SAM12. Description of all assemblies is
restricted to general operation and specification since detailed circuit
operation may be the subject of design confidentiality.
Controller Board - Type 5670A
The Controller Board, Type 5670A, is detailed in assembly
drawing E91885/A . This comprises all the interface buffers
and connections necessary to communicate between all
peripherals and the proprietary on-board plug-in ETX
processor.
The ETX unit plugs into the motherboard using connectors
SK2, SK5, SK9 and SK12.
The assembly has the following facilities used by the system:
1.
800Mhz Pentium-M processor.
2.
256 megabytes of RAM.
3.
Dual RS232 Serial communication interface.
4.
Real time clock.
5.
This is supported by an off-board Lithium battery. The
RTC provides microprocessor access to year, month,
day, hour, minute, seconds. It also provides several
interrupt periods from one year down to 0.01 seconds
6.
Quad USB hub Type 1
7.
Single Ethernet interface
8.
LCD and CRT drivers
9.
Dual IDE ports
10.
ISA 8-bit I/O expansion
11.
Flash Card interface
12.
Audio synthesizer
ETX Processor
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