S32R274 EVB
User Guide
Revision 1.4 (SCH-28921_D)
by: Ewan Harwood
Applications Engineering
NXP EKB, UK
1 Introduction
This user’s manual details the setup and configuration of
the NXP S32R274 Evaluation Board (hereafter referred to
as the EVB). The EVB is intended to provide a
mechanism for easy customer evaluation of the S32Rxx
family of microprocessors, and to facilitate hardware and
software development.
At the time of writing this document, the S32Rxx family
form the basis of the RADAR specific 55nm devices. For
the latest product information, please speak to your NXP
representative or consult the S32Rxx website at
www.nxp.com.
The EVB is intended for bench / laboratory use and has
been designed using normal temperature specified
components (+70°C).
Contents
S32R274 EVB User Guide ............................................... 2
1 Introduction ............................................................ 2
1.1 List of Acronyms ................................................ 3
1.2 Modular Concept ............................................... 3
1.3 Daughter Card Availability ................................. 4
2 EVB Features ......................................................... 4
3 Configuration .......................................................... 5
3.1 Power Supply Configuration .............................. 6
3.1.1 Motherboard Power Supply Connectors ............ 7
3.1.2 Regulator Power Jumpers ................................. 7
3.1.3 Power Switch, Status LEDs and Fuse ............... 8
3.2 CAN Configuration............................................. 8
3.3 RS232 Configuration ....................................... 10
3.4 LIN Configuration ............................................ 11
3.5 FlexRAY Configuration .................................... 12
3.6 Ethernet Configuration ..................................... 13
3.7 Motherboard .................................................... 13
4 Configuration – Daughter card.............................. 16
4.1 MCU Power ................................ ..................... 17
4.1.1 Supply Routing and Jumpers ........................... 17
4.1.2 Daughter Card Standalone Power Input .......... 18
4.2 Reset Circuit .................................................... 18
4.3 MCU External Clock Circuit ............................. 19
4.4 JTAG ............................................................... 20
4.5 Nexus Aurora ................................ .................. 21
4.6 Serial Interprocessor Interface (SIPI) ............... 21
4.7 Camera Serial Interface (MIPI-CSI2) ............... 22
4.8 Gigabit Ethernet .............................................. 22
4.9 CAN FD ........................................................... 23
4.10 Test Points - Daughter Card ............................ 24
4.11 Configuring the Daughter Card for Standalone Use
25
4.12 Configuring External VREG Mode ................... 26
4.13 Configuring Internal VREG Mode .................... 27
5 Board Interface Connector .......................................... 28
6 Default Jumper Summary Table ........................... 36
6.1 Default Jumper Table - Motherboard ............... 36
6.2 User Area ........................................................ 38
6.3 Known Issues .................................................. 38
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1.1 List of Acronyms
Table 1 provides a list and description of acronyms used throughout this document.
Table 1. List of Acronyms
Acronym
Description
1.25V_SR
Supply voltage from the 1.25V switching regulator
3.3V_SR
Supply voltage from the 3.3V switching regulator
5V_LR
Supply voltage from the 5.0V linear regulator
5V_SR
Supply voltage from the 5.0V switching regulator
ADC
Analog-to-Digital converter
RESET_B
External signal reset
EVB
Evaluation board
FEC
Fast ethernet controller module
GND
Ground
HV
High voltage (3.3V and/or 5V)
LED
Light emitting diode
LV
Low voltage (1.25V)
MCU
Microcontroller
OSC
Oscillator
P12V
12V EVB supply power domain
VREG_POR_B
Power-on reset
PWR
Power
RX
Receive
SIPI
Serial Interprocessor Interface
TBD
To be defined
TX
Transmit
VSS
Ground
1.2 Modular Concept
For maximum flexibility and simplicity, the EVB has been designed as a modular development
platform. The EVB main board does not contain an MCU. Instead, the MCU is fitted to an MCU
daughter card (occasionally referred to as an adapter board). This approach means that the same EVB
platform can be used for multiple packages and MCU derivatives within the MPC57xx and further
families. High density connectors provide the interface between the EVB and MCU daughter cards as
shown in the diagram below. See chapter 3.7 for more details on the daughter cards and 4.8 for more
details on the interface connectors.
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Figure 1.
Figure 1. Modular concept – Mother board and MCU daughter card
Please consult the website at www.nxp.com or speak to your NXP representative for more details on the
availability of MCU daughter cards.
NOTE
For details on your specific daughter card, please consult the instructions
included with the daughter card.
The EVB is designed to use the motherboard and the daughter card in conjunction. However, it is
possible to use the daughter cards standalone.
1.3 Daughter Card Availability
A number of compatible daughter cards are available for the motherboard across a number of devices.
Table 2 gives an overview of daughter cards that can be used with MPC57xx motherboard and
associated devices, package sizes and part numbers.
Table 2. Daughter card overview
Daughter card number
Device
Package
Socket
Nexus
S32R274RRUEVB
S32R274
257BGA
Yes
Yes
All daughter cards will be similar in design and concept. For details on the daughter cards please refer to
chapter 3.7.
2 EVB Features
The EVB system consists of a motherboard and a daughter card, both with distinct features.
The mother board provides the following key features:
• Support provided for different MCUs by utilising MCU daughter cards
• Single 12V external power supply input with four on-board regulators providing all of the
necessary EVB and MCU voltages; Power supplied to the EVB via a 2.1mm barrel style power
jack or a 2-way level connector; 12V operation allows in-car use if desired
• Master power switch and regulator status LEDs
• Two 240-way high-density daughter card expansion connectors allowing connection of the MCU
daughter card or a custom board for additional application specific circuitry
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• All MCU signals readily accessible at a port-ordered group of 0.1” pitch headers
• RS232/SCI physical interface and standard DB9 female connector
• FlexRAY interface
• LINFlexD interface
• 2 CAN interfaces, one configurable to be connected to one out of two CAN modules, and one
connected to a dedicated third CAN module
• Ethernet interface
• Variable resistor, driving between 5V and ground
• 4 user switches and 4 user LEDs, freely connectable
• Liberal scattering of GND test points (surface mount loops) placed throughout the EVB
The daughter cards provide the following features:
• MCU (soldered or through a socket)
• Flexible MCU clocking options allow provision of an external clock via SMA connector or
40MHz EVB clock oscillator circuit. Solder pads on the daughter card allow selection between
these external clocks. SMA connectors (including differential clock input) on CLKIN signal for
easy access.
• User reset switch with reset status LED
• Standard 14-pin JTAG debug connector and 34-pin Nexus Aurora connector
• 10-pin Serial Interprocessor Interface (SIPI) connector
• Gb Ethernet Physical interface IC, with RJ45 connector
• MIPI-CSI2 connector intended for use with Eagle MR3003 RADAR front end EVK (Evaluation
Kit)
• Liberal scattering of ground and test points (surface mount loops) placed throughout the EVB
NOTE
To alleviate confusion between jumpers and headers, all EVB jumpers are
implemented as 2mm pitch whereas headers are 0.1inch (2.54mm). This
prevents inadvertently fitting a jumper to a header.
CAUTION
Before the EVB is used or power is applied, please fully read the
following sections on how to correctly configure the board. Failure to
correctly configure the board may cause irreparable component, MCU or
EVB damage.
3 Configuration
This section details the configuration of each of the EVB functional blocks.
The EVB has been designed with ease of use in mind and has been segmented into functional blocks as
shown below. Detailed silkscreen legend has been used throughout the board to identify all switches,
jumpers and user connectors.
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Figure 2.
Figure 2. EVB Functional Blocks
3.1 Power Supply Configuration
The EVB requires an external power supply voltage of 12V DC, minimum 1.5A. This allows the EVB to
be easily used in a vehicle if required. The single input voltage is regulated on-board using three
switching regulators to provide the necessary EVB and MCU operating voltages of 5.0V, 3.3V and
1.25V, and one 5V linear regulator for the ADC supplies and references.
For flexibility there are two different power supply input connectors on the motherboard as detailed
below. There is also a power supply option on the daughter card to use the daughter card in standalone
mode. Please refer to section 4.1.2 for details on the daughter card power input.
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3.1.1 Motherboard Power Supply Connectors
2.1mm Barrel Connector – P26:
Figure 3.
Figure 3. 2.1mm Power Connector
Screw Terminal Power Connector – P33:
This can be used to connect a bare wire lead to the EVB, typically from a laboratory power supply. The
polarisation of the connectors is clearly marked on the EVB (Pin 1 = +12v). Care must be taken to
ensure correct connection.
Figure 4.
Figure 4. Screw Terminal 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:
• 1.25V_SR: 1.25V switching regulator to supply the core voltage
• 5V_SR: 5V switching regulator to supply the power management controller, I/O and peripherals
• 3.3V_SR: 3.3V switching regulator for Ethernet, FlexRAY, debug and I/O
• 5V_LR: 5V linear regulator for ADC supply and reference
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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 5V linear regulator is disabled. The
regulators can be enabled individually by the following jumper settings:
• Connecting J57 enables the 5V linear regulator
• Disconnecting J58 enables the 5V switching regulator
• Disconnecting J59 enables the 3.3V switching regulator
• Disconnecting J60 enables the 1.25V 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.
NOTE
Not all the supported daughter card MCUs require all the supplies to be
switched on. Please refer to the individual daughter card user guide for
details.
3.1.3 Power Switch, Status LEDs and Fuse
The main power switch (slide switch SW5) can be used to isolate the power supply input from the EVB
voltage regulators if required.
• Moving the slide switch to the right (away from connector P33) will turn the EVB on
• Moving the slide switch to the left (towards connector P33) will turn the EVB off
When power is applied to the EVB, four green power LEDs adjacent to the voltage regulators show the
presence of the supply voltages as follows:
• LED D9 – Indicates that the 5.0V linear regulator is enabled and working correctly
• LED D11 – Indicates that the 5.0V switching regulator is enabled and working correctly
• LED D12 – Indicates that the 3.3V switching regulator is enabled and working correctly
• LED D13 – Indicates that the 1.25V switching regulator is enabled and working correctly
If no LED is illuminated when power is applied to the EVB and the regulators are correctly enabled
using the appropriate jumpers, it is possible that either power switch SW5 is in the “OFF” position or
that the fuse F1 has blown. The fuse will blow if power is applied to the EVB in reverse-bias, where a
protection diode ensures that the main fuse blows rather than causing damage to the EVB circuitry. If
the fuse has blown, check the bias of your power supply connection then replace fuse F1 with a 20mm
1.5A fast blow fuse.
3.2 CAN Configuration
The EVB has two NXP TJA1041T high speed CAN transceivers and two female standard DB9
connectors to provide physical CAN interfaces for the MCU.
The pinout of the DB9 connector (J2) is shown in Figure 5.
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Figure 5.
Figure 5. CAN DB9 connector pinout
For flexibility, the CAN transceiver I/Os are also connected to two standard 0.1” connectors (P4 and P5)
at the top side of the PCB. The pin-out for these connectors is shown in Figure 6.
Figure 6.
Figure 6. CAN 3pin header interface connector
By default the CAN interfaces are not enabled. To enable the CAN interfaces the jumpers detailed in
Table 3 need to be placed.
Table 3. CAN control jumpers
Jumper
Label
Description
J23
CAN2_EN
PHY U2 configuration
1-2: WAKE to GND
3-4: STB to 5V
5-6: EN to 5V
J32
CAN2
1-2: PHY TX to MCU
3-4: PHY RX to MCU
J33
CAN-PWR
1-2: 5.0V_SR to PHY U2 VCC
3-4: 12V to PHY U2 V
BAT
J34 - PHY U2 signal out
1: ERR
2: INH
J21
CAN_EN
PHY U1 configuration
1-2: WAKE to GND
3-4: STB to 5V
5-6: EN to 5V
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Jumper
Label
Description
J35
CAN
1-2: 5.0V_SR to PHY U1 VCC
3-4: 12V to PHY U1 V
BAT
J37
CAN
PHY U1 TX to MCU
1-2: TTCAN TX
2-3: MCAN1 TX
J38 - PHY U1 RX to MCU
1-2: TTCAN RX
2-3: MCAN1 RX
J36 - PHY U1 signal out
1: ERR
2: INH
3.3 RS232 Configuration
Female DB9 connector J19 and MAX3221E RS232 transceiver device provide a physical RS232
interface, allowing a direct RS232 connection to a PC or terminal.
The pin-out of these connectors is detailed in Figure 7. Note that hardware flow control is not supported
on this implementation.
Figure 7.
Figure 7. RS232 physical interface connector
On default the RS232 interface is not enabled. To enable the RS232 interface the user needs to place the
jumpers detailed in Table 4.
Table 4. RS232 control jumpers
Jumper
Label
Description
J13
SCI TX
TX enable
J14
SCI RX
RX enable
J25
SCI_PWR
Transceiver power on
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3.4 LIN Configuration
The EVB is fitted with an NXP MC33661F LIN transceiver (U50) and two different style connectors: A
standard LIN Molex connector (J14) at the edge of the board and a standard 0.1" connector (P3).
The pin-out of the Molex connector J4 is shown in Figure 8.
Figure 8.
Figure 8. LIN Molex connector
For flexibility, the LIN transceiver is also connected to a standard 0.1” connector (P3) at the top side of
the PCB as shown in Figure 9. For ease of use, the 12V EVB supply is fed to pin1 of P3 and the LIN
transceiver power input to pin2. This allows the LIN transceiver to be powered directly from the EVB
supply by simply linking pins 1 and 2 of connector P3 using a 0.1" jumper shunt.
Figure 9.
Figure 9. LIN 4pin header interface connector
By default the LIN interface is not enabled. To enable the LIN interface the jumpers detailed in Table 5
need to be placed.
Table 5. LIN control jumpers
Jumper
Label
Description
J15
LIN_EN
LIN PHY (U50) enable
J16
LIN_RX
LIN RX enable
J17
LIN_TX
LIN TX enable
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3.5 FlexRAY Configuration
The EVB is fitted with two FlexRAY transceivers, a female DB9 connector (for both transceivers) and
two alternative connectors. Jumpers J27 and J30 are provided to route the respective MCU signals to the
physical interfaces.
The pin-out of the DB9 connector (J2) is shown in Figure 10.
Figure 10.
Figure 10. FlexRAY DB9 connector pinout
For flexibility, the FlexRAY transceiver is also connected to two FlexRAY connectors (P1 & P2) and
two 2pin Molex connectors (J1 & J3, not populated by default) at the top side of the EVB. Figure 11
shows the connections for both types of connectors.
Figure 11.
Figure 11. FlexRAY alternative connector pin-outs
By default the FlexRAY interface is not enabled. To enable the FlexRAY interface the jumpers detailed
in Table 6 need to be placed.
Table 6. FlexRAY control jumpers
Jumper
Label
Description
J29
FR_PWR
FlexRay transceiver VIO selection
1-2: 12V to V
BAT
3-4: 5V_SR to VCC and V
BUF
5-6: 3.3V_SR to VIO
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Jumper
Label
Description
J27
FR_A
1-2: PHY U4 TX to MCU
3-4: PHY U4 TXEN to MCU
5-6: PHY U4 RX to MCU
J28
FR_A
PHY U4 configuration:
1-2: 3.3V (VIO) to BGE
3-4: 3.3V (VIO) to EN
5-6: 3.3V (VIO) to STBY
7-8: GND to WAKE
J30
FR_B
1-2: PHY U5 TX to MCU
3-4: PHY U5 TXEN to MCU
5-6: PHY U5 RX to MCU
J31
FR_B
PHY U5 configuration:
1-2: 3.3V (VIO) to BGE
3-4: 3.3V (VIO) to EN
5-6: 3.3V (VIO) to STBY
7-8: GND to WAKE
3.6 Ethernet Configuration
The EVB is fitted with a standard RJ45 Ethernet connector (J7) and a DP83848C 10/100 Ethernet
transceiver (U6). This is however not used in conjunction with the S32R274RRUEVB daughter card
since it is fitted with its own Gb Ethernet physical interface and RJ45 connector. Please see section 4 for
details.
3.7 Motherboard
A number of test points of different shape and functionality is scattered around the EVB to allow easy
access to MCU and reference signals. This chapter summarizes and describes the available test points.
Motherboard test points are listed and detailed in Table 7.
Table 7. Test points - motherboard
Signal
TP name
Shape
Description
GND
GT1
Hook
Ground reference
GND
GT2
Hook
Ground reference
GND
GT3
Hook
Ground reference
GND
GT4
Hook
Ground reference
GND
GT5
Hook
Ground reference
GND
GT6
Hook
Ground reference
GND
GT7
Hook
Ground reference
GND
GT8
Hook
Ground reference
GND
GT9
Hook
Ground reference
GND
GT10
Hook
Ground reference
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