ambiq micro Apollo4 Blue Plus Quick Start Manual - Page 17

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By using an external supply, or the on-board VDD_1V9_PSU rail, the user is able to take accurate current

measurements of the Apollo4 Plus under a variety of conditions offered by the Display Kit without extra

load on the Apollo4 Plus SoC rails. Please consult the AMAP4PEVB Quick Start Guide for details on taking

current measurements with the Apollo4 Plus EVB.

8.2

eMMC/SPI Solder-Bridge

Solder-bridges 1 and 2 are used to select between the SDIF_DAT4 (eMMC_D4) and DISP_SPI_SDI

(AP4_DISP_SDI) hardware connections for the GPIO79 pin. By default, the hardware is configured to

connect to the e-MMC device.

8.3

Other Solder-bridge Options

For other solder-bridge options, please consult the Apollo4 Plus EVB Quick Start Guide.

QS-A4PDK-1p0

Apollo4 Plus Display Kit Quick Start Guide

Figure 6. GPIO79 Pin Connection Options

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