
SRP-F310/312
4-3 Special Circuit Descriptions
4-3-1 Power Circuit
This system is operated under 100Vac or 240Vac. The power circuit supplies the three differential DC voltage sources.
[Figure 4-3 Power Block Diagram]
1)Drawer Driving and Feed, Auto Cutter Motor Voltage and TPH Driving Voltage: +24VDC +24VDC is supplied from SMPS. This Voltage is smoothed by capacitors (CE1).
This voltage is used as a Cash Drawer Solenoid Driving voltage, Step motor driving voltage and a source voltage of the other voltage sources and TPH Driving Voltage.
2)IEEE1284 Logic IC Driving Voltage: +5VDC
Step down voltage the input +24VDC to +5VDC by a switching regulation
3) CPU I/O, FPGA I/O, NAND Flash and etc. LOGIC Voltage: +3.3VDC
Step down voltage the input +5VDC to +3.3VDC by a
4) CPU A/D, USB core and OSC Voltage: +2.5VDC
Step down voltage the input +24VDC to +2.5VDC by a switching
5) DDR2 Voltage: +1.8VDC
Step down voltage the input +5VDC to +1.8VDC by a
Rev. 1.00 | - 39 - |