Configuration
—Daughter Cards
MPC5777C EVB User Guide, Rev. 0
31
Freescale
5.1
MCU Power
5.1.1
Supply Routing and Jumpers
The different MCU supplies are connected to the regulators on the Mother Board through the
interface connector. Also daughter card has option to connect MCU supplies to either Mother Board
supplies or onboard regulators.
The connection of any power domain to a regulator has to be enabled by a dedicated jumper as
described in
Table 17.
Table 17: MCU power selection jumpers
Jumper options to achieve the above power supply modes:
Mode
name
J18
(REGSEL_
TO_GND)
J24
(VDDFLA_SEL)
J17
(VDDPWR_
SEL)
J19
(VDDPMC_
SEL)
J20
(REGCTL_
SEL)
J513
(1V25_SR_MB_
SEL)
LDO5V
2&3 -GND
OPEN - Bypass
caps
2&3 - 5V_SR
2&3 - 5V_SR
2&3 for LV
Linear
Regulator
3&4 for
1.25V_SR_OB1
(LR)
SMPS5V
1&2 - HIGH -
5V
OPEN - Bypass
caps
2&3 - 5V_SR
2&3 - 5V_SR
1&2 for LV
SPMS
5&6 for
1.25V_SR_OB2(S
R)
LDO3V
2&3 -GND
CLOSED -
VDDPWR&
VDDPMC
1&2 - 3V3_SR
1&2 - 3V3_SR
2&3 for LV
Linear
Regulator
3&4 for
1.25V_SR_OB1
(LR)
SMPS3V
1&2 - HIGH -
3V3
CLOSED -
VDDPWR&
VDDPMC
1&2 - 3V3_SR
1&2 - 3V3_SR
1&2 for LV
SPMS
5&6 for
1.25V_SR_OB2(S
R)
External
2&3 -GND
CLOSED -
VDDPWR&
VDDPMC
1&2 - 3V3_SR
1&2 - 3V3_SR
N/C
1&2 for
1.25V_SR_MB
7&8 for
SBC_1V25
External
2&3 -GND
OPEN - Bypass
caps
2&3 - 5V_SR
2&3 - 5V_SR
N/C
1&2 for
1.25V_SR_MB
7&8 for
SBC_1V25
Other Power supply Jumper settings:
Function
Jumper
Option
Remarks
VDD_HV_IO_MAIN_SEL
J32
2-3
For 5V
1-2
For 3.3V