TMS570LS3137-EP_15 Datasheet, PDF (23/157 Pages) Texas Instruments – 16- and 32-Bit RISC Flash Microcontroller

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TMS570LS3137-EP
SPNS230D – OCTOBER 2013 – REVISED FEBRUARY 2015
4.1.1.1.16 System Module Interface
nPORRST
Pin
Signal Name
Table 4-18. GWT System Module Interface
337
GWT
W7
Signal Default
Type Pull State
Input Pull Down
Pull Type
100uA
nRST
B17 I/O
Pull Up
100uA
nERROR
B14 I/O Pull Down
20uA
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 pull-up 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.
4.1.1.1.17 Clock Inputs and Outputs
Table 4-19. GWT Clock Inputs and Outputs
OSCIN
Pin
Signal Name
KELVIN_GND
OSCOUT
ECLK
GIOA[5]/EXTCLKIN/N2HET1_PIN_nDIS
ETMTRACECLKIN/EXTCLKIN2
VCCPLL
337
GWT
K1
L2
L1
A12
B5
R9
P11
Signal Default
Type Pull State
Pull Type
Description
Input
Input
Output
I/O
Input
Input
1.2V
Power
-
Pull Down
Pull Down
-
From external
crystal/resonator, or
external clock input
Kelvin ground for oscillator
To external
crystal/resonator
Programmable, External prescaled clock
20uA
output, or GIO.
20uA
External clock input #1
External clock input #2
-
Dedicated core supply for
PLL's
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Pin Configuration and Functions
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