XMOS xCORE-200 Multi-channel Audio board Design Manual page 95

USB Audio Design Guide
Description Sample resolution (bits) of output stream Alternate 1.
Default: 24 if Alternate 1 is PCM, else 32 if DSD/RAW
Note, 24 on the lowests alt in case of OUTPUT_FORMAT_COUNT = 1 leaving
24bit as the designs default resolution.
Macro STREAM_FORMAT_OUTPUT_2_RESOLUTION_BITS
Sample resolution (bits) of output stream Alternate 2.
Description
Default: 16 if Alternate 2 is PCM, else 32 if DSD/RAW
Macro STREAM_FORMAT_OUTPUT_3_RESOLUTION_BITS
Description Sample resolution (bits) of output stream Alternate 3.
Default: 32 if Alternate 2 is PCM, else 32 if DSD/RAW
Macro HS_STREAM_FORMAT_OUTPUT_1_SUBSLOT_BYTES
Description Sample sub-slot size (bytes) of output stream Alternate 1 when running in
high-speed.
Default: 4 if resolution for Alternate 1 is 24bits, else resolution / 8
Note, the default catchs the 24bit special case where 4-byte subslot is nicer
for our 32-bit machine. Typically do not care about this extra bus overhead at
High-speed
Macro HS_STREAM_FORMAT_OUTPUT_2_SUBSLOT_BYTES
Description Sample sub-slot size (bytes) of output stream Alternate 2 when running in
high-speed.
Default: 4 if resolution for Alternate 2 is 24bits, else resolution / 8
Note, the default catchs the 24bit special case where 4-byte subslot is nicer
for our 32-bit machine. Typically do not care about this extra bus overhead at
High-speed
Macro HS_STREAM_FORMAT_OUTPUT_3_SUBSLOT_BYTES
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