The DisplayPort Configuration Data is implemented as a set of distributed registers which can be read or written from the AXI4-Lite interface. These registers are considered to be synchronous to the AXI4-Lite domain and asynchronous to all others.
For parameters that might change while being read from the configuration space, two scenarios might exist. In the case of single bits, either the new value or the old value is read as valid data. In the case of multiple bit fields, a lock bit might be used to prevent the status values from being updated while the read is occurring. For multi-bit configuration data, a toggle bit is used indicating that the local values in the functional core should be updated.
Any bits not specified in the following tables are considered reserved and returns 0 upon read. The power on reset values of all the registers are 0 unless it is specified in the definition. Only address offsets are listed and the base addresses are configured by the AXI Interconnect.