Setting Registers

• Module: usrp/setting_reg.v
• Input: set_stb, set_addr and set_data
• Output: out, changed

To enable dynamic configuration of decoding parameters at runtime, the USRP N210 provides the setting register mechanism. Most modules in OpenOFDM have three common inputs for such purpose:

• set_stb (1): asserts high when the setting data is valid
• set_addr (8): register address (256 registers possible in total)
• set_data (32): the register value

Here is a list of setting registers in OpenOFDM.

Table 4 List of Setting Registers in OpenOFDM.

Name	Addr	Module	Bit Width	Default Value	Description
SR_POWRE_THRES	3	power_trigger.v	16	100	Threshold for power trigger
SR_POWER_WINDOW	4	power_trigger.v	16	80	Number of samples to wait before reset the trigger signal
SR_SKIP_SAMPLE	5	power_trigger.v	32	5000000	Number of samples to skip initially
SR_MIN_PLATEAU	6	sync_short.v	32	100	Minimum number of plateau samples to declare a short preamble