Cirrus Logic (CRUS) is trying to rebound from a series of earnings and revenue declines. Profit at the chip designer jumped 61% to 66 cents a share in fiscal Q4, picking up from the prior quarter’s 9% gain. Sales rose 71% to $255.2 million, accelerating from increases of 10% and 36% in the prior two quarters. Prior to that, the company had posted several quarters of declining sales and profit growth.