When the CSF timer expires, what type of management frames will the core insert if both CHANx_GFP_REGISTER_B and  are set?
When the CSF timer expires, the core generates management frames for each type of management frame requested. If REGISTER_B is set, the core inserts a loss of client signal. When REGISTER_B is set, the core inserts a loss of character sync. When both bits are set, the core inserts two management frames back-to-back, one for each type of CSF request. In a multi-channel system, this is repeated for every channel sequentially as defined by the channel-specific registers.