Portable electronic device and method of operation therefore

1. A method of operation of a portable electronic device comprising the steps of:

associating each of a plurality of drive voltages with at least one device identification;

detecting an attached device;

determining an identification for the attached device;

selecting a drive voltage from the plurality of drive voltages; and

driving a vibrator using the drive voltage.

2. A method of operation as recited in claim 1 , wherein the detecting step comprises detecting an attached battery.

3. A method of operation as recited in claim 1 , wherein the detecting step comprises detecting an attached accessory.

4. A method of operation as recited in claim 1 , wherein the determining step comprises the step of:

receiving the identification from the attached device.

5. A method of operation as recited in claim 1 , wherein the determining step comprises the step of:

querying the attached device to obtain the identification.

6. A method of operation as recited in claim 1 , wherein the associating step comprises the step of:

retrieving the drive voltage from a memory in which the identification and the drive voltage are stored.

7. A method of operation of a portable electronic device as recited in claim 1 wherein the associating step comprises the step of:

calculating the drive voltage from the identification.

8. A portable electronic device comprising:

an attached device;

a vibrator;

a memory that includes a plurality of drive voltage values that are each associated with at least one device identification and

a processor coupled between the attached device and the vibrator, the processor adapted to:

detect the attached device,

select a drive voltage from the plurality of drive voltage values, and

drive the vibrator using the drive voltage.

9. A portable electronic device as recited in claim 8 wherein the attached device comprises an attached battery.

10. A portable electronic device as recited in claim 8 , wherein the attached device comprises an attached accessory.

11. A portable electronic device as recited in claim 8 , further comprising:

a power management block coupled between the processor and the vibrator for creating the drive voltage for the vibrator in response to a command from the processor.

12. A portable electronic device as recited in claim 8 , further comprising a memory coupled to the processor for storing a plurality of identifications and associated drive voltages, wherein the processor is adapted to retrieve the drive voltage associated with the identification.