2.16 Temperature
LS1012A has an on-die TMU module that can be used for temperature measurements.
LS1012A also has a thermal diode on the die, which allows direct temperature
measurement. The internal temperature monitor in LS1012A is used for reading the die
temperature, and trigger software interrupts upon thermal over-temperature conditions.
These temperature warnings and alarm signals can be used by software running on
LS1012A to reduce the power dissipation and protect DUT from over-temperature
failure.
2.17 Power-monitoring LEDs
The board includes LEDs, for power or reset monitoring, which inform the user about the
status of different power rails, resets, and board faults. The FRDM-LS1012A LEDs are
listed in the following table.
Table 2-12. FRDM-LS1012A LEDs
LED legend
Description (when LED is ON)
Reference
designator
LED color
USB VBUS ON
Indicates that USB 5 V power is available on the connector
D2
Green
SDA_LED
Indicates SDA (K20) is active
D1
Green
PORST
DUT is in reset (PORESET is asserted)
D3
Red
2.18 Revision control
The GPIO2[14], GPIO2[12], and GPIO1[11] are used to determine the board revision of
FRDM-LS1012A. The following table explains the board revisions.
Table 2-13. Revision control
{GPIO2[14], GPIO2 [12], GPIO2[11] }
VERSION
0x0
Rev B
0x1
Rev C
Temperature
QorIQ FRDM-LS1012A Board Reference Manual, Rev. 3, 12/2016
26
NXP Semiconductors