NXP Semiconductors MPC5748G - Page 23

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
Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.Downloaded from Arrow.com.