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1.Stops and starts the activity of the peripheral device.

2.Generate error checking code.

3.Checks the error in the data recieved from the interface.

4.Abort that command which have errors.

5.Retry the command having an error.

6.Recieves the control signals from the interface unit.

7.Convert the format of the data .

8.Checks the status of the device.

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12y ago

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