5
Power and system configuration
5.1
Power supplies
The mini module can be powered by providing voltages or supplied externally by the 2-Way PCB Screw
Connector (CN1) or supplied by the motherboard.
When the mini module is connected to the mother board (MB), 3V3 and 5V0 are supplied by MB connector
selecting the associated jumpers. In this setup, the external power supply input available on the mini module
should NOT be used.
When the SPC58NHADPT302S Rev. A mini module is used as a stand-alone board, 5V0 voltages must be
supplied externally, 3V3 and 1V2 voltages will be generated internally by specific circuit on the mini module.
The following jumpers are used to configure the power supply (common for all supported devices):
Table 1.
Power configuration jumpers
Jumper
Description
Default
Position
J1
5.0V source for J3 pin1 (MB_5.0V_LR or 5.0V_ADC) voltage
configuration:
•
1-2 MB_5.0V_LR
•
2-3 5.0V_ADC
2-3
(5.0V_ADC)
- C3
J2
5V Switching voltage configuration:
•
1-2 5V EXT (External 5V supply)
•
2-3 MB_5.0V_SR (5V from mother board)
2-3
(MB_5.0V_SR)
- D4
J3
VDD_HV_ADR_S / VDD_HV_ADV voltage configuration:
•
1-2 5V source from J1 pin2
•
2-3 3.3V_ADC source from J4 pin2
1-2
(5.0V_ADV)
- C3
J4
3V3 source (3.3V and MB_3.3V_SR) voltage configuration:
•
1-2 3.3V (3.3V from Mini module)
•
2-3 MB_3.3V_SR
1-2
(3.3V)
- D3
J5
Main mcu supply (VDD_HV_IO_MAIN) voltage configuration:
•
1-2 5.0V_SR (5.0V)
•
2-3 3.3V_SR from J4 pin2 (3.3V)
1-2
(5.0V_SR)
- D3
J6
Supply for BALLAST circuit configuration
•
1-2 VDD_HV_IO_MAIN
•
2-3 5.0V_SR
1-2
(VDD_HV_IO_MAIN)
- D3
J7
BALLAST CIRCUIT ENABLE
•
Closed: enabled
•
Open: disable
Closed
(enable)
- D2
J8
VDD_LV voltage configuration:
•
2-3 (BALLAST circuit)
•
1-2 (1.2V_SR from J9 pin2)
1-2
(1.2V_SR)
- D3
J9
1.2V_SR switching configuration:
•
1-2 MB_1.25V_SR (1.25V from MB)
•
2-3 1.2V (1.2V from Mini module)
2-3
(1.2V from Mini module)
- D3
J16
EXTREG_SEL configuration:
•
1-2 VDD_HV_IO_MAIN
•
2-3 GND
1-2
(H level)
- C3
J27
HPREG_SEL configuration:
•
1-2 VDD_HV_IO_MAIN
•
2-3 GND
1-2
(H level)
- B3
UM2725
Power and system configuration
UM2725
-
Rev 1
page 7/38