The Status channel contains per-frame status information, that is, information that relates to an entire frame of data. This is intended for downstream slaves that do not operate on the data directly but might need to know the information to control another part of the system. The exact position in the frame where the status is sent depends on the nature of the status information. The following information is classed as per-frame status:
1. BLK_EXP for each channel
2. OVFLO for each channel
Note that the core cannot be configured to have both BLK_EXP and OVFLO .
BLK_EXP status information is sent at the start of the frame and OVFLO status information is sent at the end of the frame.