Optical navigation system and optical sensor control method
An optical sensor, comprising: a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data; wherein the optical sensor outputs the motions to a control circuit via a complex pin among the pins in a first mode; wherein the optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode.
1. An optical sensor, comprising:
a plurality of pins, wherein the optical sensor is configured to sense optical data and configured to compute motions according to the optical data;
wherein the optical sensor outputs the motions to a control circuit via a complex pin among the pins in a first mode;
wherein the optical sensor outputs data other than the motions to the control circuit via the complex pin in a second mode.
2. The optical sensor of claim 1 , wherein the optical sensor follows a SPI specification and the complex pin is a MISO pin.
3. The optical sensor of claim 2 , wherein the optical sensor further comprises a NCS pin, a SCLK pin, and a MOSI pin.
4. The optical sensor of claim 1 , wherein one of the plurality of pins inputted as a first level defines the first mode.
5. The optical sensor of claim 4 , wherein the one of the plurality of pins inputted as a second level defines the second mode.
6. An optical sensor, comprising:
a plurality of pins;
wherein the optical sensor receives first type data from a control circuit via a complex pin among the pins in a first mode;
wherein the optical sensor receives second type data from the control circuit via the complex pin in a second mode.
7. The optical sensor of claim 6 , wherein the optical sensor follows a SPI specification and the complex pin is a MOSI pin.
8. The optical sensor of claim 7 , wherein the complex pin operates as the MOSI pin in the first mode, and receives the second type data in the second mode.
9. The optical sensor of claim 7 , wherein the optical sensor further comprises a NCS pin, a SCLK pin, and a MISO pin.
10. The optical sensor of claim 6 , wherein the second type data is a trigger signal for waking up the optical sensor.
11. The optical sensor of claim 10 , wherein the trigger signal is used for immediately waking up the optical sensor.