NXP Semiconductors UM11483 - I.MX 8 M Quad Rework for SDIO Support on

NXP Semiconductors
UM11483
Getting Started with NXP-based Wireless Modules on i.MX 8M Quad EVK Running Linux OS
3.5.6 i.MX 8M Quad rework for SDIO support on M.2
The M.2 connector on AW-CM358MA wireless module supports SDIO interface for Wi-
Fi whereas the i.MX 8M Quad M.2 connector supports PCIe interface by default. This
section shows how to rework i.MX 8M Quad resistors to support SDIO on M.2 connector
for the AW-CM358MA module.
Note: The hardware rework instructions reroute the SDIO interface from the SD card
connector to the M.2 connector. A software change is also required to enable the
rerouted SDIO interface. Please refer to Section 4.5.3 "Enabling SDIO on M.2 (AW-
CM358MA module only)" to enable the SDIO interface on the M.2 connector using a DTB
file. Note that the SDIO on the Micro SD card slot will be disabled after the rework.
• Silkscreen of PCBA SCH-38820 / PCBA SCH-29615
• Remove the following 0Ω 0402 resistors: R1603, R1617, R1618, R1619, R1620 and
R1621 (micro SD card J1601)
UM11483 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 2 — 21 January 2021
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