NXP Semiconductors S32R294 User manual

S32R294 EVB User Guide
Revision 2.0 (SCH-32157_B)
by: NXP Semiconductor
1 Introduction
NXP S32R294 Evaluation Board
(hereafter referred to as the EVB). The EVB is intended to provide a mechanism for easy
customer evaluation of the S32R294 microprocessor, and to facilitate hardware and software
development.
For the latest product information, please speak to your NXP representative.
The EVB is intended for bench / laboratory use and has been designed using normal
temperature specified components (+70°C).
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
ADC
Analog-to-Digital converter
RESET_B
External signal reset

S32R294 EVB User Guide
3
Acronym
Description
EVB
Evaluation board
GND
Ground
HV
High voltage (1.8V and/or 3.3V)
LED
Light emitting diode
LV
Low voltage (0.82V)
MCU
Microcontroller
MPU
Microprocessor
OSC
Oscillator
POR_B
Power-on reset
PWR
Power
RX
Receive
SIPI
Serial Interprocessor Interface
TBD
To be defined
TX
Transmit
VSS
Ground
LCD
Liquid Crystal Display
PMIC
Power Management IC
FXOSC
Fast Crystal Oscillator
2 EVB Features
The EVB provides the following features:
•MCU (soldered or through a socket)
•Single 12V external power supply input with one NXP FS8510 PMIC providing all of the
necessary EVB and MCU voltages; Power supplied to the EVB via a 2.1mm barrel style
power jack; 12V operation allows in-car use if desired
•Master power switch and regulator status LEDs
•Flexible MCU clocking options allow provision of an external clock via adaptor board
(MIPI-CSI0 connector) or 40MHz EVB clock oscillator circuit. Solder pads allow
selection between these external clocks
•Boot mode selection via switches on board
•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
•Two MIPI-CSI2 connectors intended for use with TEF810X BEST3 RF front end board
(via a separate adaptor board X-S32R-TEF810X_ADPT)
•All MCU signals readily accessible at a port-

S32R294 EVB User Guide
4
•FlexRAY interface
•3 CAN-FD interfaces:
o1x up to 8Mbps communication speed (CAN2)
o2x up to 5Mbps communication speed (CAN0, CAN1)
•UART to Micro USB interface
•2 user switches and 4 user LEDs, freely connectable
•256Mb (64MB) Serial NOR Flash memory
•64Kb EEPROM connected to MCU via I2C
•4*10-character LCD with DSPI interface (DSPI4)
•Liberal scattering of GND test points (surface mount loops) placed throughout the EVB
•User reset switch with reset status LED
NOTE
To alleviate confusion between jumpers and headers, all EVB 2-pin
jumpers are implemented as 2mm pitch whereas 3/4/6-pin jumper
andheaders 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.

S32R294 EVB User Guide
5
3 Configuration
This section details the configuration of EVB
The EVB has been designed with ease of use in mind and has been segmented into functional
blocks as shown in Figure 1. Detailed silkscreen legend has been used throughout the board
to identify all switches, jumpers and user connectors.
Figure 1. EVB - functional blocks
3.1 MCU Power
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 the NXP FS8510 PMIC to provide the necessary EVB and MCU operating voltages of
0.82V, 1.8V, 1.2V, 3.3V and 5V, and one backup 3.3V linear regulator for ENET IO and ENET
PHY.

S32R294 EVB User Guide
6
3.1.1 Power Supply Connectors
2.1mm Barrel Connector P26:
Figure 2. 2.1mm Power Connector
3.1.2 Supply Routing and Jumpers
The figure below shows how the MCU power domains are connected.
Figure 3. EVB power distribution
The connection of any power domain has to be enabled by a dedicated jumper as described in
Table 2.


















































































































 






S32R294 EVB User Guide
7
Table 2. MCU power selection jumpers
Jumper
Description
J4
Connects VDD Core supplies to 0.82V
J5
Connects VDD LV PLL supplies to 0.82V
J7
Connects VDD LV MIPI supplies to 0.82V
J8
Connects VDD HV PLL AUR supplies to 1.8V
J9
Connects VDD HV MIPI supplies to 1.8V
J10
Connects VDD HV LFASTPLL supplies to 1.8V
J11
Connects VDD HV FIRC supplies to 1.8V
J12
Connects VDD HV EFUSE supplies to 1.8V
J13
Connects VDD HV TMU supplies to 1.8V
J14
Connects VDD HV VREF supplies to 1.8V
J15
Connects VDD HV PLL supplies to 1.8V
J16
Connects VDD HV IO AUR supplies to 1.8V
J17
Connects VDD HV IO QSPI supplies to 1.8V
J18
Connects VDD HV IO MTI supplies to 1.8V
J20
Connects VDD HV IO LFAST supplies to 1.8V
J21
Connects VDD HV IO supplies to 3.3V
J22
Connects VDD HV FXOSC supplies to 1.8V
J23
Connects VREFH ADC supplies to 1.8V
J25
Connects VDD HV ADC supplies to 1.8V
J64
Connects VDD HV IO ENET supplies to 1.8V or 3.3V
3.1.3 FS8510 PMIC Debug Mode
As part of the safety features of the FS8510 PMIC there is an internal watchdog timer which
must be refreshed within 256ms after supply power on. If this watchdog is not serviced then
the FS8510 will assert the MCU RESET_B signal several times before then attempting to
power cycle the MCU.
It is therfore recommended to put the FS8510 device into debug mode after power on by
disabling (default) jumper J2. In debug mode, no watchdog refresh is required which allows
application development without the need for watchdog servicing via the MCU.
3.1.4 Power Switch, Status LEDs and Fuse
The main power switch (switch SW1) can be used to isolate the power supply input from the
EVB voltage regulators if required.
•Push S1 indicator -will turn the EVB on
•will turn the EVB off

S32R294 EVB User Guide
8
When power is applied to the EVB, six blue power LEDs adjacent to the FS8510 PMIC show
the presence of the supply voltages as follows:
•LED D6 Indicates that the 0.82V is enabled and working correctly
•LED D7 Indicates that the 1.8V is enabled and working correctly
•LED D8 Indicates that the 1.2V is enabled and working correctly
•LED D9 Indicates that the 3.3V is enabled and working correctly
•LED D10 Indicates that the 5.0V is enabled and working correctly
•LED D11 Indicates that the 4.1V is enabled and working correctly
If no LED is illuminated when power is applied to the EVB and the FS8510 is correctly
enabled, it is possible that either power switch S1  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
SMT 5A fast blow fuse.
dically then it is likely that the FS8510 has not
entered debug mode. Please power off the board and wait at least 1 second before powering
back on to recover from this.
3.2 Reset Circuit
S32R294 POR_B reset is connected to FS8510 PGOOD signal as well as a reset switch SW1
via jumper J3. An orange LED D5 is illuminated after 0.82V, 1.8V, 3.3V working correctly, and
the PGOOD signal is forced high simultaneously by the FS8510 PMIC.
S32R294 RESET_B reset is connected to FS8510 RST signal. Bi-direction connection is
chosen by connecting J56 pin 1->2, and single-direction only from FS8510 RST to S32R294
RESET_B is chosen by connecting J56 2->3 (default). A red LED D12 is used to indicated
RESET_B reset situations.
The EVB reset circuit provides the following functionality:
The reset switch SW1 can be used to reset the MCU and PMIC. FS8510 RST will be released
after PGOOD going high and may assert if errors happen in FS8510 according to the
configured settings. Normally, RESET_B is controlled by S32R294 and is kept high after MCU
leaving the reset state. POR_B is also connected to the QSPI Flash IC (U21) reset pin.
RESET_B is also connected to reset signal of several peripherals and selection signal of the
analog switch IC MAX4886 via a Schmitt trigger buffer.
Table 3. Reset circuit jumper settings
Jumper
Description
J3
Connect reset switch circuit and FS8510 PGOOD pin to POR_B pin

S32R294 EVB User Guide
9
Jumper
Description
J56 1->2
Enable bi-direction connection between FS8510 RST pin and
RESET_B pin
J56 2->3
Enable single direction connection between FS8510 RST pin and
RESET_B pin
3.3 MCU External Clock Circuit
In addition to the internal 48 MHz oscillator, the MCU can be clocked by different external
sources. The EVB system supports two possible MCU clock sources:
1. 40MHz crystal Y1 (The MCU only has a 40MHz input)
2. External differential or single ended clock input to the EVB via MIPI-CSI0 connector
J36, driving MCU EXTAL and XTAL with negative and positive clock signals
respectively
The clock circuitry is shown in Figure 4. Each source is selectable via the 0-ohm links as
shown, with crystal Y1 being the default factory option.
Figure 4. 40MHz crystal circuit
The main use-case for the EVB when using an external clock would be having the TEF810X
RF front end BEST3 board via the S32R-TEF810-ADPT adaptor board connected to J36. In
this configuration a single ended clock can be routed to the MCU by placing a zero-ohm link
(or bridging the solder pads) of M5, M6 and M7, and remove M3 and M4. This gives the
desired effective configuration shown in Figure 5 below.

S32R294 EVB User Guide
10
Figure 5. Effective single ended configuration
3.4 JTAG
The EVB is fitted with 14-pin JTAG debug connector. The following diagram shows the 14-pin

Figure 6. JTAG connector pinout

S32R294 EVB User Guide
11
3.5 Nexus Aurora
Table 4 shows the pinout of the 34-pin Samtec connector for the S32R294 Aurora interface.
Table 4. Aurora Trace connector pinout
Pin No
Function
Pin No
Function
1
TX0+
2
VREF
3
TX0-
4
TCK/TCKC/DRCLK
5
VSS
6
TMS/TMSC/TxDataP
7
TX1+
8
TDI/TxDataN
9
TX1-
10
TDO/RxDataP
11
VSS
12
JCOMP/RxDataN
13
TX2+
14
EVTI1
15
TX2-
16
EVTI0
17
VSS
18
EVTO0
19
TX3+
20
VREG_POR_B
21
TX3-
22
RESET_B
23
VSS
24
VSS
25
TX4+1
26
CLK+
27
TX4+1
28
CLK-
29
VSS
30
VSS
31
TX5+1
32
EVTO1/RDY
33
TX5+1
34
N/C
GND
VSS
GND
VSS
1. Lane not used on the S32R294 device.
3.6 Serial Interprocessor Interface (SIPI)
A dedicated SIPI interface connector is provided on the EVB.
A 10pin Samtec connector (J17: ERF8-005-05.0-LDV-L-TR) is used for the SIPI interface. The
pin-out of the connector is shown in Figure 7.
Figure 7. SIPI connector pinout