Freescale Semiconductor KIT33908MBEVBE User manual

Freescale Semiconductor, Inc.
User’s Guide
© Freescale Semiconductor, Inc., 2014. All rights reserved.
Document Number: KT33908MBUG
Rev. 1.0, 3/2014
KIT33908MBEVBE Evaluation Mother Board
Featuring the MC33908 Safe System Basis Chip with Buck and Boost DC/DC up to 1.5 A
Figure 1. KIT33908MBEVBE Evaluation Board
Contents
1 Kit Contents/Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2 Jump Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3 Important Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
5 Evaluation Board Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
6 MC33908 Device Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
7 Required Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
8 Evaluation Board Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
9 Setting Up and Using the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
10 Evaluation Board Hardware Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
11 Power Supply Scheme when Using Daughterboard MPC5643L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
12 Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
13 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
14 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
16 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Kit Contents/Packing List
KIT33908MBEVBE Evaluation Board User’s Guide , Rev. 1.0 3/2014
2Freescale Semiconductor, Inc.
1 Kit Contents/Packing List
• Assembled and tested evaluation board/module in anti-static bag. The board is preloaded with demo
software
• Warranty card
2JumpStart
•Gotowww.freescale.com/analogtools
•Locate your kit
• Review your Tool Summary Page
• Look for
• Download documents, software, and other information
Jump Start Your Design

Important Notice
KIT33908MBEVBE Evaluation Board User’s Guide, Rev. 1.0 3/2014
Freescale Semiconductor, Inc. 3
3 Important Notice
Freescale provides the enclosed product(s) under the following conditions:
This evaluation kit is intended for use of ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES
ONLY. It is provided as a sample IC pre-soldered to a printed circuit board to make it easier to access inputs,
outputs, and supply terminals. This evaluation board may be used with any development system or other
source of I/O signals by simply connecting it to the host MCU or computer board via off-the-shelf cables. This
evaluation board is not a Reference Design and is not intended to represent a final design recommendation
for any particular application. Final device in an application will be heavily dependent on proper printed circuit
board layout and heat sinking design as well as attention to supply filtering, transient suppression, and I/O
signal quality.
The goods provided may not be complete in terms of required design, marketing, and or manufacturing related
protective considerations, including product safety measures typically found in the end product incorporating
the goods. Due to the open construction of the product, it is the user's responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. In order to minimize risks associated with the
customers applications, adequate design and operating safeguards must be provided by the customer to
minimize inherent or procedural hazards. For any safety concerns, contact Freescale sales and technical
support services.
Should this evaluation kit not meet the specifications indicated in the kit, it may be returned within 30 days from
the date of delivery and will be replaced by a new kit.
Freescale reserves the right to make changes without further notice to any products herein. Freescale makes
no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor
does Freescale assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages.
“Typical” parameters can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typical”, must be validated for each customer application by customer’s
technical experts.
Freescale does not convey any license under its patent rights nor the rights of others. Freescale products are
not designed, intended, or authorized for use as components in systems intended for surgical implant into the
body, or other applications intended to support or sustain life, or for any other application in which the failure
of the Freescale product could create a situation where personal injury or death may occur.
Should the Buyer purchase or use Freescale products for any such unintended or unauthorized application,
the Buyer shall indemnify and hold Freescale and its officers, employees, subsidiaries, affiliates, and
distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising
out of, directly or indirectly, any claim of personal injury or death associated with such unintended or
unauthorized use, even if such claim alleges that Freescale was negligent regarding the design or manufacture
of the part.Freescale™ and the Freescale logo are trademarks of Freescale Semiconductor, Inc. All other
product or service names are the property of their respective owners.
© Freescale Semiconductor, Inc. 2014

Introduction
KIT33908MBEVBE Evaluation Board User’s Guide , Rev. 1.0 3/2014
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4 Introduction
The KIT33908MBEVBE evaluation mother board demonstrates the functionality of the MC33908 power system
basis chip. This SMARTMOS IC is equipped with an Intelligent Power Management System including safety
features targeting the latest ISO26262 automotive functional safety standard. The power management and
MCU peripherals are located on the motherboard described in this user guide. The motherboard can be used
with different daughter boards. The daughter board is selected according to the preferred MCU along with its
associated circuitry. The enhanced evaluation board system includes demonstration software, which facilitates
communication between the motherboard’s power management functions and daughter board’s MCU. The
system’s advanced safety features enable it to reach the highest standard in functional safety: ASILD.
5 Evaluation Board Features
• Unique modular platform enables evaluation of different microcontrollers using the KIT33908MBEVBE and
daughter board
• Switching mode power supply (SMPS) dedicated to MCU core supply: 1.2 V and 3.3 V, selectable through
an external voltage, selectable through external jumpers
• Linear voltage regulator dedicated to MCU A/D reference voltage or I/Os supply (VCCA). 5.0 V or 3.3 V
• Linear voltage regulator dedicated to auxiliary functions or to a sensor supply (VCCA tracker or independent
5.0 V/3.3 V)
• Highly flexible SMPS pre-regulator, allowing two topologies: Non-inverting buck-boost or standard buck
• Multiple wake-up sources in low-power mode: CAN Interface, local wake pins
• Battery voltage sensing before reverse battery protection
• Enhanced safety block associated with fail-safe outputs (two active-low signals)
• SPI interface connectivity
• Configurable digital I/Os through SPI registers
• MUX output terminal for the device’s internal analog signal and power supply monitoring
• SO11898 high-speed CAN interface compatibility for baud rates of 40 kB/s to 1.0 MB/s
• High EMC immunity and ESD robustness

MC33908 Device Features
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6 MC33908 Device Features
The MC33908 is a multi-output IC, with power supply and HSCAN transceiver. This device is designed
specifically with the automotive market in mind. It supports the following functions:
• Highly flexible SMPS pre-regulator, allowing two topologies: non-inverting buck-boost or standard buck
• Switching mode power supply (SMPS) dedicated to MCU core supply: 1.2 V or 3.3 V, delivering up to 1.5 A
• Linear voltage regulator dedicated to MCU A/D reference voltage or I/Os supply (VCCA): 5.0 V or 3.3 V
• Linear voltage regulator dedicated to auxiliary functions or to a sensor supply (VCCA tracker or independent
5.0 V/3.3 V)
• Multiple wake-up sources in low-power mode: CAN and/or IOs
• Battery voltage sensing and multiplexer output terminal (various signal monitoring)
• Enhanced safety block associated with fail-safe outputs
• Six configurable I/Os
• ISO11898 high-speed CAN interface compatibility for baud rates of 40 kB/s to 1.0 MB/s
• High EMC immunity & ESD robustness
7 Required Equipment
• Power supply
• Oscilloscope (preferably four-channel) with current probe
• Digital multimeter
• USB-enabled PC with Windows XP or higher
• MCU daughter board
Important notice:
The mother board (KIT33908MBEVBE) is extensible by the daughter board (KITMPC5643DBEVM) and cannot
operate separately. The equipment list is considered for operation with the KITMPC5643DBEVM uniquely. Two
modes of operation with this platform can be distinguished:
Recommended equipment for software development:
• Power supply 12 V/3.0 A
• USB A-B cable
• P&E USB Multi-link Debugger
• USB-enabled PC
Recommended equipment for hardware development (validation of analog functionality etc.):
• Power supply: typically 12 V/3.0 A
• USB A-B cable
• USB-enabled PC
Recommended software:
• Windows 7 32-bit operating system
• MC33907_8 Graphical User Interface
(http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=KIT33907AEEVB&fpsp=1&tab=Desi
gn_Tools_Tab)
• CodeWarrior IDE for Qorivva MCU family installed
(http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=CW-MPC55XX_56XX&fsrch=1)

Evaluation Board Configuration
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8 Evaluation Board Configuration
8.1 Evaluation Board Configuration for Software Development
Figure 2. KIT33908MBEVBE Board Setup for Software Development
Power Supply
P&E Multilink
KITMPC5643DBEVM
Personal Computer
Universal Debugger
Cable
USB A-B
KIT33908MBEVBE

Evaluation Board Configuration
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8.2 Evaluation Board Configuration for Hardware Development
Figure 3. KIT33908MBEVBE Board Setup For Hardware Development
Cable
USB A-B
C
C
C
b
b
b
l
l
l
Personal Computer
KIT33908MBEVBE
KITMPC5643DBEVM
Power Supply

Setting Up and Using the Hardware
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9 Setting Up and Using the Hardware
In order to perform the demonstration examples, first set up the evaluation board hardware and software as
follows:
1. Install the MC33907_8 graphical user interface
2. Plug the daughter board onto the mother board platform (KIT33908MBEVBE)
3. Connect the power supply to the mother board and switch it on (verify the power supply’s polarity)
4. Connect the mother board to the PC using USB A-B cable
5. Wait for the driver installation (after the first connection, drivers for the device have to be installed. This can
take several minutes. When finished, a status message will be displayed)
6. Launch the MC33907_8 graphical user interface
7. Select the EVM button on the welcome screen to choose the enhanced evaluation board option
8. Switch to the “Read registers 5” where you should see an on-going watchdog refresh (bits of the
WD_LFSR register will be blinking)
10 Evaluation Board Hardware Description
From the functional point of view, the KIT33908MBEVBEE motherboard can be separated into two different
sections: analog and digital. The analog part consists of the MC33908 chip and its associated circuitry. The
digital part consists of the MCU peripherals.
Figure 4. The KIT33908MBEVBEE Enhanced Evaluation Board

Evaluation Board Hardware Description
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10.1 The Analog Section
10.1.1 Overview
Figure 5. Power Management Section
10.1.2 VCORE Output Capacitance (JP126)
Output capacitance has an impact on the feedback (FB_core), which is necessary for controlling the VCORE
voltage through a compensation network. For test purposes on the EVM, two different capacities are selectable
due to the jumper JP126 (if the jumper is disconnected, output capacitance is set to 20 µF, otherwise to 40 µF),
see Jumper Definitions. These capacities simulate capacity of the real circuitry normally connected to VCORE.
Changing the output capacitance has an impact on a selection of the compensation network.
10.1.3 Compensation Network (JP115 &JP117)
The voltage regulator needs feedback from the VCORE voltage to be able to adjust (control) output voltage. For
this reason, a compenstation network is implemented in the external MC33908 circuitry. Static feedback
(steady-state) voltage is defined by a simple resistor bridge (given by R119/R121 and R133). Dynamic behavior
of the regulator is controlled by an RC network (defined by R124, R126, C127, C130, R135, R136, C128, C129).
Compensation network is shown on the Figure 6. Steady-state voltage can be chosen (either 1.23 or 3.3 V). To
tune the dynamic performance, the board is equipped with two different networks (possible combinations of the
jumpers JP115 and JP117 are shown in the Table 1). The combinations shown in Table 1 were chosen for an
optimal performance for the given output voltage. The real dynamic performance can differ for different
applications, and can be tuned by changing the compensation network, and by adding output capacitors
(JP126).

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Figure 6. Compensation Network and VCORE Setting Scheme
Table 1. Compensation Network and VCORE Setting
VCORE (V)
Jumper Settings
Static Behavior Dynamic Behavior
JP115 JP114 JP117
1.23 3 - 4 3 - 4 3 - 4
3.3 1 - 2 1 - 2 1 - 2

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10.2 The Digital Section
All I/O ports from the MCU are accessible via the I/O ports implemented on the top of the Mother board. Pin
mapping of the ports with the IOs differs depending on the type of Daughter board being used. An example of
port mapping done for the MPC5643L is shown in the Figure 7.
Figure 7. MCU I/Os Mapping for Daughter Board MPC5643L
10.2.1 Ports A through H
Table 2. I/O Port Mapping (when the daughter board with MPC5643L is being used)
PORT D PORT H
PD1 PD3 PD5 PD7 PD9 PD11 PD13 PD15 VCORE PH1 PH3 PH5 PH7 PH9 PH11 PH13 PH15 VCORE
PD0 PD2 PD4 PD6 PD8 PD10 PD12 PD14 GND PH0 PH2 PH4 PH6 PH8 PH10 PH12 PH14 GND
PORT C PORT G
PC1 PC3 PC5 PC7 PC9 PC11 PC13 PC15 VCORE PG1 PG3 PG5 PG7 PG9 PG11 PG13 PG15 VCORE
PC0 PC2 PC4 PC6 PC8 PC10 PC12 PC14 GND PG0 PG2 PG4 PG6 PG8 PG10 PG12 PG14 GND
PORT B PORT F
PB1 PB3 PB5 PB7 PB9 PB11 PB13 PB15 VCORE PF1 PF3 PF5 PF7 PF9 PF11 PF13 PF15 VCORE
PB0 PB2 PB4 PB6 PB8 PB10 PB12 PB14 GND PF0 PF2 PF4 PF6 PF8 PF10 PF12 PF14 GND
PORT A PORT E
PA1 PA3 PA5 PA7 PA9 PA11 PA13 PA15 VCORE PE1 PE3 PE5 PE7 PE9 PE11 PE13 PE15 VCORE
PA0 PA2 PA4 PA6 PA8 PA10 PA12 PA14 GND PE0 PE2 PE4 PE6 PE8 PE10 PE12 PE14 GND

PORTA
PORTB
PORT
C

PORTD
PORTF
PORTE
PORTG
PORTH
PORTI
PORTJ
PORTK
PORTL
PORTMPORTN
PORT
P


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10.2.2 Ports I through P
10.2.3 MCU peripherals
Basic peripherals such as potentiometer, LEDs and Buttons were placed for any debug purposes on the Mother
board. Mapping of these peripherals on the MCU ports can differ with respect to the MCU Daughter board that
is being used. For the MPC5643L these peripherals are mapped on the PORT D as shown in Table 4
Table 3. I/O Port Mapping (when Daughter board with MPC5643L is being used)
PORT L PORT P
PL1 PL3 PL5 PL7 PL9 PL11 PL13 PL15 VCORE HP1 HP3 HP5 FCCU1 VCORE
PL0 PL2 PL4 PL6 PL8 PL10 PL12 PL14 GND HP0 HP2 HP4 FCCU0 GND
PORT K
PK1 PK3 PK5 PK7 PK9 PK11 PK13 PK15 VCORE PORT M PORT N
PK0 PK2 PK4 PK6 PK8 PK10 PK12 PK14 GND PM0 PM1 PN0 PN1
PM2 PM3 PN2 PN3
PORT J PM4 PM5 PN4 PN5
PJ1 PJ3 PJ5 PJ7 PJ9 PJ11 PJ13 PJ15 VCORE PM6 PM7 PN6 PN7
PJ0 PJ2 PJ4 PJ6 PJ8 PJ10 PJ12 PJ14 GND PM8 PM9 PN8/Vaux PN9/Vaux
PM10 PM11 PN10/Vaux PN11/Vaux
PORT I PM12 PM13 PN12/Vpre PN13/Vpre
PI1 PI3 PI5 PI7 PI9 PI11 PI13 PI15 VCORE PM14 PM15 PN14/Vpre PN15/Vpre
PI0 PI2 PI4 PI6 PI8 PI10 PI12 PI14 GND GND VCORE GND VCORE
Table 4. MCU Peripherals Mapping (MPC5643L daughter board)
Component Potentiometer Buttons LEDs
Name POT SW1 SW2 SW3 SW4 LED1 LED2 LED3 LED4
Port PC0 PD0 PD1 PD2 PD3 PD4 PD5 PD6 PD7

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10.2.4 Serial Communication Interface
For communication with the PC, the KIT33908MBEVBE is equipped with UART/USB and UART/RS232
converters (see Table 8). In one time only, one of them can be used. Choice of the interface can be done using
jumpers JP304 (TxD connection) and JP305 (RxD connection). The UART/USB converter is used by default for
communication with the graphical user interface (GUI). If no frame is on-going, the UART/RS232 converter goes
to a low-power mode (typically after 30 s) - indicated by LED D306.
Figure 8. Serial Communication Interface
10.2.5 CAN Interface
The MC33908 is equipped by a CAN bus physical layer. Basic configuration is shown in Table 9. For the
MPC5643L, the CAN0 module is mapped to the physical layer (CAN0_TxD on PORTB0 and CAN0_RxD on
PORTB1).
Figure 9. CAN Interface
















 
 





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
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



Evaluation Board Hardware Description
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10.3 LED Display
The following LEDs are provided as visual output devices for the KIT33908MBEVBE evaluation board:
10.4 Test Point Definitions
The following test-point jumpers provide access to signals on the MC33908 IC:
Table 5. LED Display
Schematic Label Name Description
D102 Power Power indicator
D103 VPRE Indicator of pre-regulator voltage
D104 VAUX Indicator of auxiliary power supply
D105 VCCA Indicator of ADC's power supply
D106 CAN_5V Indicator of 5.0 V CAN voltage
D107 LED_IO_5 Indicator of IO_5 state
D108 LED_IO_4 Indicator of IO_4 state
D114 LED_FS0b Indicator for Fail Safe output no. 0
D300 LED1 LED for MCU debug purposes
D301 LED2 LED for MCU debug purposes
D302 FTDI_Rx UART/USB reception indicator
D303 FTDI_Tx UART/USB transmission indicator
D304 LED3 LED for MCU debug purposes
D305 LED4 LED for MCU debug purposes
D306 RS232 UART/RS232 converter indicator (1)
Notes
1. Converter is active after POR state and if no frames are on-going, it is switched automatically
into Low-power mode. This is typically 30 s after a POR (LED will be switched ON).
Table 6. Test Point Definitions
Schematic Label Name Description
TP100 VSUP Supply voltage
TP101 VSW Switching voltage
TP102 VPRE Pre-regulator voltage
TP103 VCORE Core voltage for the MCU
TP104 CANH
TP105 LIN LIN bus
TP106 CAN_5V 5 V CAN voltage
TP111 VAUX Auxiliary power supply
TP112 VCCA ADC power supply
TP113 CANL
TP115 FS0b Fail Safe output no. 0
TP117 GND Ground
TP118 GND ground
TP119 GND ground

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10.5 Evaluation Board Connectors
Figure 10. LIN Connector
TP120 GND ground
TP121 GND ground
TP122 GND ground
TP124 GND ground
TP125 GND ground
Table 7. Board Connectors (J100-J103)
Schematic Label Description
J100 Power supply (typically 12 V DC)
J101 VPRE – pre-regulator voltage
J102
CAN connection
pin1 CANL CANL signal after transceiver (NOT the MCU side)
pin2 CANH CANH signal after transceiver (NOT the MCU side)
J103
LIN connection – only for kits equipped with LIN
pin1 VSUP LIN bus supply voltage
pin2 VSUP LIN bus supply voltage
pin3 LIN LIN after transceiver (NOT the MCU side)
pin4 GND Ground
Table 6. Test Point Definitions (continued)
Schematic Label Name Description

Vsup1Vsup2
LINGND

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Table 8. Jumper Board Connectors (J104-J400)
Schematic Label Description
J104 VAUX - voltage on the auxiliary power supply
J105
FS0b external connector
pin1 FS0 FS0 output amplified by transistor
pin2 GND Ground
J107
General Inputs/Outputs of the MC33908
pin1 IO_0
pin2 IO_1
pin3 IO_2
pin4 IO_3
pin5 IO_4
pin6 IO_5
J108 GND - Ground
J109 GND - Ground
J110
MC33908 Inputs/Outputs
pin1 INTb Interrupt (activated low)
pin2 RSTb Reset (activated low)
pin3 NCS SPI - Chip Select (activated low)
pin4 SCLK SPI - Clock
pin5 MOSI SPI - Master Output Slave Input
pin6 MISO SPI - Master Input Slave Output
pin7 GND ground
J200 PORTA
J201 PORTF
J202 PORTB
J203 PORTG
J204 PORTC
J205 PORTH
J206 PORTD
J207 PORTI
J208 PORTE
J209 PORTJ
J210 PORTK
J211 PORTL
J212 PORTM
J213 PORTN
J214 PORTP
J300 USB - PC interface
J301 RS232 - PC interface
J400
Power supply DC 12 V
This connector should be used to supply EVM from protected power supply.
pin1 GND Ground
pin2 VBAT Positive supply

Evaluation Board Hardware Description
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10.6 Jumper Definitions
The following table defines the evaluation board jumper positions and explains their functions. (The default
settings are shown in bold.)
Table 9. Jumper Definitions
Schematic Label Description
JP100 LIN_Vsup1 – enables VSUP for the LIN bus
JP101 LIN_Vsup2 – enables VSUP for the LIN bus
JP102 Vsns_EN – connects battery voltage before filter to the Vsense
JP103 LED_PW_EN – enables power supply LED
JP104 Vcore_EN – connects VCORE power supply to the daughter board connector
JP105 Vcca_B_EN – connects base of the Q3 transistor to the VCCA_B pin
JP106 FS0b_LED_EN – enables LED D15 for the fail-safe output no. 0
JP109 FCCU1_EN – connects FCCU1 signal from the daughter board to the IO_3
JP110 FCCU0_EN – connects FCCU0 signal from daughter board to the IO_2
JP111 IO_0_PULLD – Connects a pull-down resistor to the IO_0
JP112
DBG_EN – enables debug mode of the MC33908
No jumper Normal mode
1 - 2 Debug mode
JP113
Vsup_EN – Power supply for MC33908.
Allows disconnection of all three supply pins for current measurements. Normally (no measurement), jumpers should be
connected.
1 - 2 Enables power supply (VSUP) for VSUP1 and VSUP2 pins of MC33908
3 - 4 Enables power supply (VSUP) for VSUP3 pin of MC33908
JP114
Vcore_SEL – VCORE selection
If this feature is used and enabled by JP7, then this resistor bridge has to be in the same configuration as the JP20. Volt-
age on this voltage divider has to be adjusted to the same level as for the first bridge using potentiometer POT1.
1 - 2 VCORE = 3.3 V
3 - 4 VCORE = 1.23 V
JP115
COMP1 - Compensation network for FB_core - part 1
1 - 2 VCORE = 3.3 V
3 - 4 VCORE = 1.23 V
JP116
BRIDGE_SEL – External resistor bridge monitoring.
If this feature is used and enabled by JP7, then this resistor bridge has to be in the same config. as the JP20. Voltage on
this voltage divider has to be adjusted to the same level as for the first bridge using potentiometer POT1.
1 - 2 VCORE = 3.3 V
3 - 4 VCORE = 1.23 V
JP117
COMP2 – Compensation network for FB_core – part 2
1 - 2 VCORE = 3.3 V
3 - 4 VCORE = 1.23 V
JP118
Gate_LS_SEL – buck-boost/standard buck mode configuration
1 - 2 and 3 - 4 Standard buck configuration is used (transistor disconnected from the Gate_LS pin).
Jumpers off Buck-boost configuration is enabled (transistor controlled by the Gate_LS pin).

Evaluation Board Hardware Description
KIT33908MBEVBE Evaluation Board User’s Guide , Rev. 1.0 3/2014
18 Freescale Semiconductor, Inc.
JP119
BOOTS_CORE – Configuration for BOOTS_CORE pin
1 - 2 For future use - BOOTS_CORE pin connected to the ground
2 - 3 Used for MC33907_8 - BOOTS_CORE pin connected to the SW_core
JP120
Vcca_E_SEL – External transistor for VCCA
1 - 2 Emitter of Q3 connected to VCCA_E
2 - 3 Q102 not used
JP121
VCCA/VAUX regulator selection
1 - 2 VAUX is DISABLED
2 - 3 VAUX is ENABLED
JP122
Vddio_SEL – VDDIO tracking
1 - 2 VDDIO will track VCCA
2 - 3 VDDIO will track VCORE
JP123
DRIFT_MONIT – External resistor bridge monitoring (for future use)
1 - 2 Second resistor bridge ENABLED
2 - 3 Second resistor bridge DISABLED
JP124
IO4_SEL – IO_4 output configuration
1 - 2 IO_4 pulled down
2 - 3 IO_4 connected to the LED
JP125
IO5_SEL – IO_5 output configuration
1 - 2 IO_5 pulled down
2 - 3 IO_5 connected to the LED
JP126
C_OUT – selection of the output capacitance for VCORE. If connected, the output capacitance is 40 µF, 20 µF otherwise.
No jumper Cout = 20 µF
1 - 2 Cout = 40 µF
JP127
Power supply for LEDs on IO_4 and IO_5
1 - 2 Enables power supply for IO_5
3 - 4 Enables power supply for IO_4
JP300 POT_EN – connects potentiometer P300 to the daughter board
JP301
PB_PULL – polarization of the pull-up/down resistor for buttons
1 - 2 Resistors connected to GND (pull-down resistors)
2 - 3 Resistors connected to VCORE (pull-up resistors)
JP302
PB_IN – polarization of the button output
1 - 2 When button is ON, output is connected to VCORE.
2 - 3 When button is ON, output is connected to the GND.
JP303
FTDI_config – supply for FTDI converter
1 - 2 USB converter is supplied from its internal 3,3 Power supply (standard configuration
for the KIT33908MBEVBE)
2 - 3 USB converter is supplied from the USB bus (5V)
JP304
TxD – USB/RS232 transmitter connection
1 - 2 MCU's transmitter will be connected to the RS232 converter
2 - 3 MCU's transmitter will be connected to the USB converter
Table 9. Jumper Definitions (continued)
Schematic Label Description

Evaluation Board Hardware Description
KIT33908MBEVBE Evaluation Board User’s Guide, Rev. 1.0 3/2014
Freescale Semiconductor, Inc. 19
JP305
RxD – USB/RS232 receiver connection
1 - 2 MCU's receiver will be connected to the RS232 converter
2 - 3 MCU's receiver will be connected to the USB converter
JP306
SW_EN – enables using of switches (buttons)
Buttons are connected to the daughter board IOs for debug purposes.
1 - 2 SW1 enabled
3 - 4 SW2 enabled
5 - 6 SW3 enabled
7 - 8 SW4 enabled
JP307
LED_EN – enables using of LEDs
LEDs are connected to the daughter board IOs for debug purposes.
1 - 2 LED1 enabled
3 - 4 LED2 enabled
5 - 6 LED3 enabled
7 - 8 LED4 enabled
Table 9. Jumper Definitions (continued)
Schematic Label Description

Power Supply Scheme when Using Daughterboard MPC5643L
KIT33908MBEVBE Evaluation Board User’s Guide , Rev. 1.0 3/2014
20 Freescale Semiconductor, Inc.
11 Power Supply Scheme when Using Daughterboard
MPC5643L
Figure 11. MPC5643L Power Supply Scheme
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