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CC2564B功耗高(相对CC2564)

Other Parts Discussed in Thread: CC2564

我司有一款蓝牙手表产品,上一版用的是CC2564,开机未连接功耗大概300uA左右(蓝牙Scan InquIry AdvertIsing都未开启),新版换成CC2564B后,该功耗升至
900uA。(除蓝牙芯片外其他地方未做改动)。
请问该功耗是否可能由SBC的codec导致的?若是的话应该如何关掉呢?