5
4
3
2
1
Reset and External Clock In
Reset is in the
Reset Input / Output
PORST
PER_HVA
VDD_HVA domain.
D
C
PER_HVA
Connect an external LVI to pad
when supplying external 1.25V so
R37
that PORST is asserted until
3V3_SR
exterbal 1.25V supply is at
10.0K
threshold and stable
TPH1
R140
C24
(0603
1
PORSTx
(0603
270
C25
0.1UF
50V)
0.1UF
50V)
A
TARGET
R135
R134
GND
DS7
RESET
GND
R136
10.0K
10.0K
YELLOW LED
Reset from
8
U12A
LED
U11
4
RST
10.0K
Bi Directional reset
Debugger
1
line to/from MCU
5
JTAG-RSTx
VCC
JTAG-RSTx
C
VCC
R137
0
1
7
SYSTEM-RSTx
3
2
RST-INx
MCU-RSTx
RST-SWITCHx
2
MR
RESET
GND
Tri-State Buffered
Reset Switch
GND
4
SN74LVC2G08DCT
RESET signal to
(1.65 to 5.5v operation)
1
reset the MCU
Buffered RESET-out
1
2
SW3
B3WN-6002
GND
ADM6315-26D2ARTZR7
Active reset drive (high / low)
GND
(2.5 to 5v operation)
for any periperhals that need to
TPV5
be reset when MCU is in reset
C121
(0603
3V3_SR
0.1UF
50V)
Note:
R141
270
DS8
A
C
GND
The Reset pad on Calypso is in the VDD_HV_A domain which can be run from either 3.3V or 5V
LED RED
(selected by the VDD_HV_A and PER_HVA jumpers)
U12B
(MCU RESET)
To maintian brightness on the LED's irrespective of the voltage setting, the LED's are
powered from constant 3.3V, grounded via the reset line.
5
3
RST-OUTx
6
PORSTx
7
MCU-RSTx
5,7
RST-OUTx
12
D
C
B
A
SN74LVC2G08DCT
JTAG Standard 14-pin Connector
PER_HVA
R58
R57
R56
R52
ONCE Connector
10.0K
10.0K
10.0K
10.0K
DNP
P1
7
PC0
PC0
TDI
(TDI)
1
2
(GND)
7
PC1
PC1
TDO
(TDO)
3
4
(GND)
7
PH9
PH9
TCLK
(TCLK)
5
6
(GND)
EVTI
(EVTI)
7
8
(N/C)
DBUG-RSTx
(RESET)
9
10
(TMS)
PH10
(VREF)
11
12
(GND)
5
JTAG-RSTx
JTAG-RSTx
R55
0
(RDY)
13
14
JCOMP
(buffered
reset TO MCU)
R147
CON_2X7
R53
Note TCLK needs to be pulled down to allow exit from STANDBY in some corner cases
R54
0
10.0K
5,7
MCU-RSTx
MCU-RSTx
10.0K
(bidirectional
DNP
MCU reset)
Optional
Automotive Microcontroller
Config
GND
Applications
GND
East Kilbride, Scotland
PH10
TMS
NXP General Business Use
7
PH10
Drawing Title:
MPC5748G-LCEVB
Page Title:
Reset Circuitry & External Clock In
Size
Document Number
Rev
B
SCH-27897
PDF: SPF-27897
B
Date:
Friday, February 12, 2016
Sheet 5
of
15
B
A
5
4
3
2
1
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