TMS570LS3137_15 Datasheet, PDF (35/173 Pages) Texas Instruments – TMS570LS3137 16- and 32-Bit RISC Flash Microcontroller

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TMS570LS3137
SPNS162C – APRIL 2012 – REVISED APRIL 2015
4.3.2.16 System Module Interface
nPORRST
nRST
nERROR
Table 4-38. ZWT System Module Interface
TERMINAL
SIGNAL NAME
337
ZWT
SIGNAL
TYPE
RESET
PULL
STATE
PULL TYPE
W7
Input
Pulldown
Fixed 100 µA
Pulldown
B17
I/O
Pullup
Fixed 100 µA
Pullup
B14
I/O
Pulldown
Fixed 20 µA
Pulldown
DESCRIPTION
Power-on reset, cold reset
External power supply monitor
circuitry must drive nPORRST
low when any of the supplies
to the microcontroller fall out
of the specified range. This
terminal has a glitch filter.
See Section 6.8.
System reset, warm reset,
bidirectional.
The internal circuitry indicates
any reset condition by driving
nRST low.
The external circuitry can
assert a system reset by
driving nRST low. To ensure
that an external reset is not
arbitrarily generated, TI
recommends that an external
pullup resistor is connected to
this terminal.
This terminal has a glitch
filter. See Section 6.8.
ESM Error Signal
Indicates error of high
severity. See Section 6.18.
4.3.2.17 Clock Inputs and Outputs
Table 4-39. ZWT Clock Inputs and Outputs
TERMINAL
SIGNAL NAME
OSCIN
KELVIN_GND
OSCOUT
ECLK
GIOA[5]/EXTCLKIN/N2HET1_PIN_nDIS
ETMTRACECLKIN/EXTCLKIN2
VCCPLL
337
ZWT
SIGNAL
TYPE
RESET
PULL
STATE
K1
Input
N/A
L2
Input
L1
Output
A12
I/O
Pulldown
B5
Input
Pulldown
R9
Input
P11
1.2-V
Power
N/A
PULL TYPE
DESCRIPTION
None
Programmable,
20 µA
Fixed 20 µA
Pulldown
None
From external
crystal/resonator, or external
clock input
Kelvin ground for oscillator
To external crystal/resonator
External prescaled clock
output, or GIO.
External clock input #1
External clock input #2
Dedicated core supply for
PLLs
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Terminal Configuration and Functions
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