The number of requests corresponds to the number of start transfers.
For example, setting this field to 2 performs two burst accesses regardless of the
burst type (INCR4, INCR8,etc.). The number of words corresponds exactly to the number
of accesses; setting this field to 2 performs two accesses. In this example, burst
accesses will be broken.
These values depend on scheme arbitration (see MPDDRC
Configuration Arbiter Register).
In case of round-robin arbitration, this field is not used. In case
of “bandwidth arbitration”, this field corresponds to percentage allocated for each
port. In case of “request” arbitration, this field corresponds to number of start
transfers or to number of accesses allocated for each port.