SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
A pressure based arbitration is implemented for the DSP_NoC interconnect.
A DSP_NoC local MFlag mechanism is used but it is SW controlled in the DSP_SYSTEM configuration space.
This is done via the register DSP_SYS_BUS_CONFIG bitfields :
The pressure for each port is signaled on a MFlag[1:0] bus and conveys a value of 0 (lowest), 1 (medium), or 3 (highest). A value of 0x2 is reserved/undefined.
The default pressure level for all ports is 0x0 and is recommended for most systems. This results in round-robin arbitration across active requests.