NXP Semiconductors KIT34932SEKEVB, Руководство пользователя, Страница: 13 / 39

Getting to Know the Hardware
KT34FS6407-34FS6408UG User’s Guide Rev. 1.0 8/2015
Freescale Semiconductor, Inc. 13
J6 Configuration for Boots_core pin
1-2
Boots_core pin connected to GND – used for devices with linear voltage regulator on
V
CORE
2-3
Boots_core pin connected to SW_core – used for devices with switching mode power
supply on V
CORE
J7
Power supply (max. voltage = 40 V)
This connector should be used to supply EVB from protected voltage source
1 VBAT Positive supply
2 GND
Ground
J8 Power supply for EVB
Allows disconnecting of all three supply pins for current measurements
Normally (no measurement), jumpers should be connected
1-2
Enables power supply (V
BAT_P
) for VSUP3 pin of MC34FS6407(or MC34FS6408)
3-4
Enables power supply (V
SUP
) for VSUP1 and VSUP2 pins of MC34FS6407(or
MC34FS6408)
J9
Compensation network for FB_core – part 2
1-2 V
CORE
= 1.23 V
3-4 V
CORE
= 3.3 V
J10 V
SNS
_EN – connects battery voltage before filter to V
SENSE
J11 External transistor for V
CCA
1-2 Emitter of Q2 connected to VCCA_E
2-3
External transistor Q2 is not used
J12 IO_0_PD – pulls down IO_0
J13 FS0B pull-up connection
1-2 FS0B pull-up is supplied from V
SUP3
2-3 FS0B pull-up is supplied from V
DDIO
J14 Connects base of the transistor Q2 to the VCCA_B pin
J15 External resistor bridge monitoring (for future use)
Used in conjunction with J18
Resistor bridge has to be in same configuration as J5
Voltage on this voltage divider has to be adjusted to same level as for first bridge using potentiometer R17
1-2 V
CORE
= 1.23 V
3-4 V
CORE
= 3.3 V
Table 6. Jumpers J1 through J31 (Including Connectors) (continued)
Schematic
Label
Pin Number Pin Name Jumper/Pin Function