Texas Instruments LP87745-Q1, User Manual

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Table 3-2. Configuration Jumpers (continued)
Jumper/Connector Number Jumper/Connector Name Configuration Description
J15
SCLK_SPI
Pins 1 and 2 (Default)
Connects PMIC SCLK_SPI signal
to MCU SCLK_SPI port directly
Pins 2 and 3
Connects PMIC SCLK_SPI signal
to MCU SCLK_SPI port through a
level shifter (series resistors need
to be mounted if this option is
used)
SDO_SPI Pins 1 and 2 (Default) Connects PMIC SDO_SPI signal
to MCU SDO_SPI port directly
Pins 2 and 3 Connects PMIC SDO_SPI signal
to MCU SDO_SPI port through a
level shifter (series resistors need
to be mounted if this option is
used)
CS_SPI_WD Pins 1 and 2 (Default) Connects PMIC CS_SPI signal to
MCU CS_SPI port directly
Pins 2 and 3 Connects PMIC CS_SPI signal to
MCU CS_SPI port through a level
shifter (series resistors must be
mounted if this option is used)
SDI_SPI Pins 1 and 2 (Default) Connects PMIC SDI_SPI signal
to MCU SDI_SPI port directly
Pins 2 and 3 Connects PMIC SDI_SPI signal
to MCU SDI_SPI port through a
level shifter (series resistors need
to be mounted if this option is
used)
J16 nERR_GPO2
Pins 1 and 2 (Default)
Connects PMIC nERR_GPO
signal to MCU port directly
Pins 2 and 3
Connects PMIC nERR_GPO2
signal to MCU port through level
shifter (series resistors must be
mounted if this option is used)
3.1 Test Points
Table 3-3 lists all the available connectors on the EVM.
Table 3-3. Test Points on the EVM
Connector Number Connector Name Description
J11 PVIN3V3_S Test point to measure the input voltage of
the PMIC
J19 Load Module Connector
Connector placeholder for
PMICLOADBOARDEVM for doing load
transient testing
J20 Load Module Connector
Connector placeholder for
PMICLOADBOARDEVM for doing load
transient testing
J21 FB_B1
Test point to measure the BUCK1 feedback
signal
J22 FB_B2
Test point to measure the BUCK2 feedback
signal
J23 FB_B3
Test point to measure the BUCK3 feedback
signal
J27 J27
SMA connector for BUCK3 noise
measurement
J28 J28
SMA connector for BUCK2 noise
measurement
Jumpers and connectors www.ti.com
6 LP877451Q1EVM Evaluation Module SNVU769A – SEPTEMBER 2021 – REVISED OCTOBER 2022
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