Freescale Semiconductor MPC5748G EVB, User Manual

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Initial Configuration
MPC5748G EVB User Guide, User Guide, Rev. 0, 08/2015
Freescale Semiconductor, Inc. 11
Jumper Position PCB Legend Description
J8
2
FLA
Fitted (D)
MCU VDD_HV_FLA pin is connected to 3.3v (Switching Regulator)
Removed MCU VDD_HV_C domain is connected to 5.0V (Switching Regulator)
J9
REG
1-2 (D)
3V3 MCU ballast transistor collector is connected to 3.3V (Switching)
2-3
5V0
MCU ballast transistor collector is connected to 5.0V(Switching)
Removed MCU ballast transistor collector is not connected to power
J10
VDDLV
1-2 (D)
REG MCU VDD_LV domain is powered from ballast transistor
2-3
1V25L
MCU VDD_LV domain is powered from 1.25V Linear regulator
Removed MCU VDD_LV domain is not powered
J11
DAC
1-2 (D)
HVA MCU VIN1_CMP_REF is powered from VDD_HV_A
2-3
USR
MCU VIN1_CMP_REF is powered from user testpoint (TPH3)
Removed MCU VIN1_CMP_REF is not powered
5.1.7. Peripheral Power Supply Jumpers (J24, J25)
There are two additional power supply jumpers controlling the I/O voltage for the peripherals on the
EVB in the HVA and HVB voltage domains.
The settings on these jumpers must match the VDD_HV_A and VDD_HV_B jumper voltage setting on
the MCU daughtercard.
The default configuration matches the MCU daughtercard default configuration with both jumpers set to
3.3V.
Table 4. Peripheral Power Control (J24, J25)
Jumper Position PCB Legend Description
J24
HVA
1-2 (D)
3V3 EVB peripherals in HVA domain are set to use I/O voltage of 3.3V
2-3 5V0 EVB peripherals in HVA domain are set to use I/O voltage of 5.0V
Removed Invalid Configuration, avoid!
J25
HVB
1-2 (D)
3V3 EVB peripherals in HVB domain are set to use I/O voltage of 3.3V
2-3
5V0
EVB peripherals in HVB domain are set to use I/O voltage of 5.0V
Removed Invalid Configuration, avoid!
5.1.8. EVB Voltage Regulators
The following table shows the usage of each EVB voltage regulator. This provides a useful cross
reference point should any regulator be disabled. In addition, the distribution of the peripheral voltages
HVA (J24) and HVB (J25) are shown.
2
Note that jumper J8 (FLA) jumper must only be fitted when VDD_HV_A (J5) is connected to 3.3V.
The peripheral power
jumpers are in the bottom
left quarter of the EVB,
above the power area