Gtech Accutherm, Service Manual, Page: 24 / 132

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A power supply supervisor chip monitors the 3.3V and provides reset control for
the processor and FPGA.
Communications Interface
The communications interface is resident on the main controller PCB. The
Accutherm Ultra is available with one interface; USB.
1.8 VDC Derived from 3.3V using an internal
regulator resident in the MCF5253 Processor core
1.5 VDC Derived from 3.3V using a TI
TPS73601 low drop linear regulator FPGA core
Table 1-2. Power Supply Circuitry
Voltage Derived From Used For