NXP Semiconductors
UM11579
PCA9957HN-ARD evaluation board
5 Getting to Know the Hardware
5.1 PCA9957HN-ARD features
•
Combined Arduino port/Fuji connector for data and power
•
Multiple board connection in stack architecture
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On-board LEDs for all 24 outputs of the DUT
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On-board jumpers for LED connection, and short tests
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On-board connectors for external LEDs
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Fully compliant with IMXRT1050 EVK board, including GUI (Windows 10)
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Fully compliant with LPCXpresso55S69 dev. board, including GUI (Windows 10)
•
Compliant with i.MX Mini LPDDR4 EVK board, including GUI for Windows 10 (see
Note 1)
Note 1: i.MX Mini LPDDR4 EVK Boards require the use of an IMX8MMINI-IARD
interposer board between the EVK and PCA9957HN-ARDUINO daughter board (see
.
5.2 Block diagram
shows a block diagram of the PCA9957HN-ARD daughter board. The block
diagram includes Arduino interface (J5, J6, J35, and J36 connectors) and the data
lines connected to the port. The blue lines in the drawing refer to the SPI bus and the
purple lines represents the control bus. The J46 and J47 connectors are Fuji conncetors
). J46 is the Fuji output connector (pin header) and is
located on the top layer of the board. J46 is intended to be mated with a similar Fuji input
connector (J47) on a board mounted directly on top of the first board. In this way, several
boards can be connected in a stack. The first board is powered and communicates
through the Arduino connector; the other attached boards draw power and communicate
through the Fuji connectors.
Figure 1. PCA9957HN-ARD block diagram
UM11579
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User manual
Rev. 1 — 25 February 2021
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