NXP Semiconductors PCA9955BTW-ARD, Руководство пользователя, Страница: 14 / 38

NXP Semiconductors
UM11761
PCA9955BTW-ARD evaluation board
Ref Des Test point / jumper label Description
TP18 LED14 White LED W6
TP19 LED15 White LED W7
TP23 VCC_5V0_EXT 5 V external power rail
TP26 VCC_5V0 5 V power rail (Arduino connector)
TP27 VCC_5V0_MAIN 5 V main power rail
TP28 VCC_3V3_MAIN 3.3 V main power rail
TP29 GND Ground
TP30 GND Ground
Table 5. PCA9955BTW-ARD test points
...continued
5 Installing and configuring software tools
PCA9955BTW-ARD evaluation board is designed and built as a daughterboard able to
work in conjunction with a motherboard equipped with an Arduino port. The board was
built to be fully compatible with the following NXP Evaluation (EVK) boards:
• IMXRT1050 EVK Board
• LPCXpresso55S69 Development Board
• i.MX 8M Mini LPDDR4 EVK Board
Each mentioned above evaluation / development board benefits by firmware support
which can be downloaded from NXP company site ( www.nxp.com/ ). Before starting,
the EVK motherboard must be programmed with the corresponding firmware package.
Additionally, a GUI application (Windows 10) is available for download from the NXP site,
allowing rapid testing and operation of PCA9955BTW-ARD daughterboard through the
one of above mentioned EVK. For details regarding installation of the EVK firmware and
GUI host software on PC please download
UM11581, Arduino Shields GUI and firmware
installation
from ( www.nxp.com/ ). Once the software is installed, the first step is to select
the correct combination EVK – PCA9955BTW-ARD daughterboard, and then the board
can be controlled from the GUI interface. See Section 7 and Section 8 for more details
regarding the operation of PCA9955BTW-ARD from GUI software.
6 Configuring the hardware
6.1 Using the PCA9955BTW-ARD with an IMXRT1050 EVK board
Figure 5 shows the required hardware for operation of the PCA9955BTW-ARD
daughterboard with IMXRT1050 EVK. The following items are necessary:
• One IMXRT1050-EVK board
• One PCA9955BTW-ARD daughterboard
•
One USB-A / USB Micro-B cable
• A PC with Windows 10 operating system
The IMXRT1050 EVK motherboard can be powered by one of the three methods:
• Connecting an external 5VDC power supply to the barrel power connector (J2) on the
board
UM11761 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1.0 — 18 March 2022
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