Revision E
MAC
5500 resting ECG analysis system
2-7
2020299-020
Equipment Overview: Theory of Operation
Theory of Operation
Overview / Block Diagram
The MAC 5500 CPU board contains all of the circuitry for the MAC
5500 resting
ECG analysis system except for the line power supply, acquisition module,
keyboard and display. Although the MAC 5500 runs software derived from products
based on the Max-1 architecture (running on the C-Exec operating system), it has
almost nothing in common with that hardware family. Component references in this
section are relative to the 801212-007 CPU board assembly.
The CPU board assembly contains the following:
64 MB SDRAM (holds both code and data)
32 MB SDRAM acts as video frame memory
32 MB NAND Flash (holds FPGA configuration and system code)
32 MB NAND Flash for ECG Record storage
128 KB Boot Data Flash (holds primary boot image)
CRT video DACs
External 12 Volt Power Switch
Acquisition Module Transceiver / Power Switch
Printhead Power Switches and Pixel Test Circuit
Daughter Board Interface which support LAN and modem.
Switch Mode Power Supplies
3.3 Volt for Logic, LCD
5 Volt for Logic, Printer
12 Volt for LCD backlight, External Com Port Power
Battery Charger
-12 Charge Pump for Analog Circuits
Linear Power Supplies
1.8 Volt (AT91RM9200 Core and FPGA Core)
2.5 Volt Reference
3.3 Volt for System Supervisor (Moe Stooge)
12 Volt for Analog Circuits
Crystals / Clocks
24 MHz Oscillator for FPGA
32.768 Khz Real Time Clock for Super IO chip.
32.768 Khz (AT91RM9200)
18.432 Mhz (AT91RM9200)
4 Mhz (3 devices, 1 for each Stooge)
Atmel AT91RM9200 CPU Containing:
Incorporates the ARM920T
ARM® Thumb
Processor
-
200 MIPS at 180 MHz, Memory Management Unit
-
16-KByte Data Cache, 16-KByte Instruction Cache, Write Buffer
-
In-circuit Emulator including Debug Communication Channel
-
Mid-level Implementation Embedded Trace Macrocell (256-ball BGA
Package Only)
Low Power: 30.4 mA on VDDCORE, 3.1 mA in Standby Mode
Additional Embedded Memories
-
16K Bytes of SRAM and 128K Bytes of ROM
Summary of Contents for MAC 5500
Page 1: ...g MAC 5500 Resting ECG Analysis System Service Manual 2020299 020 Revision E GE Healthcare ...
Page 9: ...Revision E MAC 5500 resting ECG analysis system 1 1 2020299 020 Introduction 1 Introduction ...
Page 10: ...1 2 MAC 5500 resting ECG analysis system Revision E 2020299 020 Introduction For your notes ...
Page 55: ...Revision E MAC 5500 resting ECG analysis system 3 1 2020299 020 Installation 3 Installation ...
Page 56: ...3 2 MAC 5500 resting ECG analysis system Revision E 2020299 020 Installation For your notes ...
Page 105: ...Revision E MAC 5500 resting ECG analysis system 5 1 2020299 020 Maintenance 5 Maintenance ...
Page 106: ...5 2 MAC 5500 resting ECG analysis system Revision E 2020299 020 Maintenance For your notes ...
Page 137: ...Revision E MAC 5500 resting ECG analysis system 6 1 2020299 020 Parts List 6 Parts List ...
Page 138: ...6 2 MAC 5500 resting ECG analysis system Revision E 2020299 020 Parts List For your notes ...
Page 175: ...Revision E MAC 5500 resting ECG analysis system Index 1 2020299 020 Index ...
Page 176: ...Index 2 MAC 5500 resting ECG analysis system Revision E 2020299 020 ...
Page 178: ...Index Index 4 MAC 5500 resting ECG analysis system Revision E 2020299 020 ...
Page 179: ......