NXP Semiconductors PCA9846PW-ARD, Руководство пользователя, Страница: 18 / 27

NXP Semiconductors
UM11759
PCA9846PW-ARD evaluation board
The following steps describe how to assemble, program, and operate the configuration
shown in Figure 11.
1. Insert the PCA9846PW-ARD expansion board. to P16-P19 connectors located on
LPCXpresso55S69 development board. See the marked pins of P16-P19 in Figure
12 .
2. Connect the development board using port P6 USB port of PC.
3. Install the LPCXpresso55S69 target firmware. Refer to UM11581
[12]
for more
information.
4. Install GUI application on the PC. See the instruction file called out in Step 3 .
5. Open the GUI application to operate the device from the PC. See Section 7 .
Figure 13 shows the two boards in operation.
Figure 13. PCA9846PW-ARD expansion board and LPCXpresso55S69 mother board
operation
6.3 Using the PCA9846PW-ARD with an i.MX 8M Mini LPDDR4 EVK board
When an i.MX 8M Mini LPDDR4 EVK board is used with the PCA9846PW-ARD board, a
third board (IMX8MMINI-IARD interposer board) must be used, especially designed and
built as EVK-expansion board interconnection. The EVK board i.MX 8M Mini LPDDR4
is not equipped with an Arduino port. Instead, it has a 2 x 20 pin expansion connector
(J1003, refer to UM11612
[10]
). J1003 is a multipurpose port, containing various digital I/
O lines, including specialized I
2
C and SPI buses. Starting from the expansion connector
pin chart, an Arduino port interposer board was developed, with the role of signal-to-
signal bridge between the 2 x 20 connector pins on the i.MX 8M Mini LPDDR4 EVK and
the mated connectors of the Arduino port present on the PCA9846PW-ARD expansion
board.
UM11759 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1 — 6 June 2022
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