SPDIFTxClk Register, TxClk_Source field. Valid options??

sgordon777 — Mon, 02 Jun 2025 17:15:29 GMT

I'm trying to write an SPDIF driver, and referencing this manual:

i.MX 8M Mini Applications Processor Reference Manual, Document Number: IMX8MMRM, Rev. 3, 11/2020

On page 4211, the SPDIFTxClk is described. bits 8-10 are the TxClk_Source field. However, I only see one option:

0000 - Clock selection from Audio Clock Mux (ACM).

1-What is the Audio Clock Mux??? There's no other references to the definition of that in this manual.

2-There is room for 8 options, yet only Option 0x0000 is given here. There must be more? The initialize function for the FSL library sets this field to 0x1 (!?)

i.MX ProcessorsのトピックSPDIFTxClk Register, TxClk_Source field. Valid options??

SPDIFTxClk Register, TxClk_Source field. Valid options??