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TPS65983: Insert interrupt with Audio Accessory

Part Number: TPS65983

Hi all,

My customer has a microcontroller running that is polling a GPIO interrupt pin for a state change, and has the TPS65983B setup to send an interrupt on plug insertion/removal. 

When he uses a PD enabled device, ther is an interrupt on insertion, but not on removal. 

When he uses an analog audio accessory, there is an interrupt on both insertion and removal. He is clearing the interrupts on the PD controller when he receives them in both cases. Is this to be expected? What could be causing this behavior?