Texas Instruments LP876242-Q1, Руководство пользователя

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Table 3-7. DIP Switches
Switch Pin Signal line
S1 1-12 CS5
2-11 CS4
3-10 CS3
4-9 CS2
5-8 CS1
6-7 GPIO2
S2 1-16 SDA_I2C1/SDI_SPI
2-15 SCL_I2C1/SCK_SPI
3-14 SDA_I2C2/SDO_SPI
4-13 SCL_I2C2/CS_SPI
5-12 GPIO1
6-11 GPIO2
7-10 GPIO3
8-9 GPIO4
S3 1-16 GPIO5
2-15 GPIO6
3-14 GPIO7
4-13 GPIO8
5-12 GPIO9
6-11 GPIO10
7-10 Not connected
8-9 nINT
3.6 EVM Control and GPIO
The EVM has a built-in USB interface based on the MSP432E401Y (U3) to allow the GUI, from the host
computer, to communicate with the PMIC. The supply voltage required by the MSP432E401Y is generated
automatically by the TLV73333PQDRVRQ1 (U12) and TLV73318PQDRVRQ1 (U13) devices which provides 3.3
V and 1.8 V from USB power, +VBUS. These voltages are available for supplying VIO for the PMIC (selectable
from J33). Two SN74GTL2003 level shifters (U4, U6) are used in order to support the use case of the PMIC
VIO of 1.8 V (the MCU IO is 3.3 V). In addition to the level shifters, the TS3A5018RSVR (U8) switch is used
to apply the pullup voltages to the I
2
C lines only when the EVM is configured as controller (J17). Additional
TS3A5018RSVR (U9) switch is used for SPI enable/disable. The EVM has 4 LEDs to indicate board power, on
or off, and some pre-defined PMIC GPOs status. The signals are listed in
Table 3-8 .
Table 3-8. EVM LED Indicators
LED Designator Indication
D2 LED is on when nINT is low.
D3 LED is on when EN_DRV is high.
D4 LED is on when nRSTOUT is low.
D5 EVM USB power indicator.
EVM Details www.ti.com
8 LP876242-Q1 Evaluation Module SLVUC20A – MARCH 2021 – REVISED AUGUST 2022
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