Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/NXP Semiconductors/MIMXRT1021/SPDIF/SRCD#0x0
USyncMode=USyncMode_0
CDText Control Register
no description available
0 (USyncMode_0): Non-CD data
1 (USyncMode_1): CD user channel subcode
Copyright 2016-2020 NXP All rights reserved.
SPDX-License-Identifier: BSD-3-Clause
https://github.com/cmsis-svd/cmsis-svd-data