NXP Semiconductors PCF2131-ARD, Руководство пользователя, Страница: 21 / 31

NXP Semiconductors
UM11597
PCF2131-ARD evaluation board
Figure 13. PCF2131-ARD daughterboard / i.MX 8M Mini LPDDR4 EVK board operation
6.1.4 Using PCF2131-ARD with another Arduino device
The PCF2131-ARD daughterboard can be operated with a different EVK board, which
has an Arduino port. There are two options to connect the board: using an EVK equipped
with an Arduino port, and an EVK without an Arduino port. In the first case, a firmware
shall be developed according with PCF2131TF specifications, and then simply attach
PCF2131-ARD daughterboard to the EVK, to operate the board. In the second case,
using the pin chart of Arduino connectors ( Table 1 ), make the necessary electrical
connections (for power, I
2
C-bus or SPI-bus and interrupt control lines), and develop the
desired firmware, assuring that is compliant with IC specifications. Use PCF2131TF
datasheet to read details about internal registers of PCF2131TF and data exchange
between internal controller and the EVK. Ensure the electrical connections are correct
and avoid data conflicts on the signal lines to prevent IC damage.
6.1.5 Using PCF2131-ARD with Aardvark I
2
C/SPI Host Adapter
The PCF2131-ARD evaluation board can be controlled with the Aardvark I
2
C/SPI host
adapter from Total Phase. The daughterboard contains the dedicated Aardvark connector
(J4), so the host adapter can be directly connected to the daughterboard through J4
header, as shown in Figure 14 . The pin chart of J4 is detailed in Table 3 . The Aardvark
I
2
C/SPI host adapter, along with the software tools (dynamic linked library, control
center API) from Total Phase represents a powerful tool to test and develop devices and
systems which use I
2
C and SPI standard protocols.
Note: The user must provide power through the USB connector (J5), or Arduino interface
(J11), before operating the daughterboard with the Aardvark host adapter. In
Figure 14
the power is provided through the USB connector.
UM11597 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1.0 — 15 September 2021
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