Table 35. S32R family miscellaneous connections (continued)
FCCU External Error Signal -
FCCU_F0
R17
R17
L13
The Fault Collection and Control Unit (FCCU) has
error output signals for the communication of errors to
external devices. The use of these signals is
application specific, more information can be found in
the FCCU chapter in the device reference manual.
FCCU External Error Signal -
FCCU_F1
M14
M14
K11
The Fault Collection and Control Unit (FCCU) has
error output signals for the communication of errors to
external devices. The use of these signals is
application specific, more information can be found in
the FCCU chapter in the device reference manual.
Non-Maskable Interrupt (NMI)
N16
N16
K13
NMI input can be found on pin N16. The use of this
pin is application specific; please see the Wake-up
Unit (WKPU) chapter in the device reference manual
for more information.
If the pin is not used, it can be rendered non-
functional by connecting to VDD_HV_IO through a
4.7 Kilo Ohm or 10 Kilo Ohm pull-up resistor.
No Connect Strategy
J1, J2,
K1, K2,
H1, H2,
G1, G2
J1, J2,
K1, K2,
H1, H2,
G1, G2,
A1, A2,
A3, A4,
A5, A9,
B1, B2,
B3, B4,
B5, B9,
C1, C2,
C5, C6,
C7, C8,
D3, D4,
D5, D7,
E3, E4,
T8, T9,
U8, U9
E1, E2,
F2, F3,
G2, G3,
G1, H1
There are a number of non-functional pins that must
be dealt with appropriately.
10 High speed layout considerations
Due to the high speed nature of many of the interfaces on the S32R274 device attention has to be paid to the PCB layout to
ensure the integrity of these signals. When performing the layout of your circuit please consider the following:
• Differential pair routes must be impedance matched as well as length matched between all data lanes and the clock
lane.
• Differential pair routes should be kept as short as possible. Place any connectors as close to the S32R274 device as you
can to minimize board trace length.
• All differential signals should be routed on the same board layer so they all see the same parasitics. Ideally this would
be the top or bottom layer. Eliminate vias if at all possible. If vias must be used, make sure they are used across all
lanes.
• Use the following steps to reduce crosstalk in either microstrip or stripline layouts:
High speed layout considerations
S32R27/37 Hardware Design Guide, Rev. 1, 04/2018
48
NXP Semiconductors