Mcbsp's Frame-Synchronization Period is set in FPER of SRGR2, allowing up to 4096 bits /frame, frame length is set in register XFRLEN1, max words number is 128(129 * 32 bits = 4096),
If word bit size (e.g.,16 bits /word)is specified and frame length is set(e.g.,2 words/frame), then bit number in a frame is decided accordingly(16*2 = 32bits/frame), thus, the setting of frame-Synchronization Period seems redundant,is
it necessary to set FPER to 31? what happens if set FPER to 20 or 40?
can someone help me to understand this ? many thanks.
