Datasheet

TMS570LS1224
SPNS190B –OCTOBER 2012–REVISED FEBRUARY 2015 www.ti.com
4.3.2.14 System Module Interface
Table 4-33. ZWT System Module Interface
Terminal Signal Reset Pull Pull Type Description
Type State
Signal Name 337
ZWT
nPORRST W7 Input Pull Down Fixed 100 µA Power-on reset, cold reset
Pull Down 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.
nRST B17 I/O Pull Up Fixed 100 µA System reset, warm reset,
Pull Up 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.
nERROR B14 I/O Pull Down Fixed 20 µA ESM Error Signal
Pull Down Indicates error of high
severity. See
Section 6.18.
4.3.2.15 Clock Inputs and Outputs
Table 4-34. ZWT Clock Inputs and Outputs
Terminal Signal Reset Pull Pull Type Description
Type State
Signal Name 337
ZWT
OSCIN K1 Input N/A None From external
crystal/resonator, or
external clock input
KELVIN_GND L2 Input Kelvin ground for oscillator
OSCOUT L1 Output To external
crystal/resonator
ECLK A12 I/O Pull Down Programmable, External prescaled clock
20 µA output, or GIO.
GIOA[5]/EXTCLKIN/EPWM1A/N2HET1_PIN_nDIS B5 Input Pull Down 20 µA External clock input #1
EXTCLKIN2 R9 Input External clock input #2
VCCPLL P11 1.2V N/A None Dedicated core supply for
Power PLL's
34 Terminal Configuration and Functions Copyright © 2012–2015, Texas Instruments Incorporated
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