Configuration
—Motherboard
MPC5777C EVB User Guide, Rev. 0
7
Freescale
3.1.1
Motherboard Power Supply Connectors
2.1 mm Barrel Connector – P26:
Figure 3: 2.1 mm Power Connector
2-Way Lever Connector – P33:
This can be used to connect a bare wire lead to the EVB, typically from a laboratory power supply.
The polarization of the connectors is clearly marked on the EVB. Care must be taken to ensure correct
connection.
Figure 4: Lever Power Connector
3.1.2
Regulator Power Jumpers
There are four power regulator circuits on the MPC57xx motherboard that supply the required voltages
to operate the MCUs:
• 5V_SR: 5 V switching regulator to supply the power management controller, I/O and peripherals
• 3.3V_SR: 3.3 V switching regulator for Ethernet, debug and I/O
• 5V_LR: 5 V linear regulator for ADC supply and reference
All of the regulators have the option of being disabled/ enabled if they are not required. By default
(jumpers are off), all of the switching regulators are enabled and the 5 V linear regulator is disabled. The
regulators can be enabled individually by the following jumper settings:
• Connecting J57 enables the 5 V linear regulator
• Disconnecting J58 enables the 5 V switching regulator
• Disconnecting J59 enables the 3.3 V switching regulator
• Disconnecting J60 enables the 1.25 V switching regulator
The regulators supply power to the daughter cards through the board connector. The individual
selection and configuration of the MCU supplies are done on the daughter cards.
Содержание MPC5777C EVB
Страница 14: ...Configuration Motherboard MPC5777C EVB User Guide Rev 0 14 Freescale...
Страница 35: ...Configuration Daughter Cards MPC5777C EVB User Guide Rev 0 35 Freescale Table 20...
Страница 37: ...Configuration Daughter Cards MPC5777C EVB User Guide Rev 0 37 Freescale Table 21 Figure 22 JTAG connector point...
