ADNS-2030 データシートの表示（PDF） - Agilent Technologies, Inc

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ADNS-2030

Low Power Optical Mouse Sensor

Agilent Technologies, Inc 

Quadrature Mode Timing

The output waveforms emulate

the output from encoders. With

the resolution set to 400 cpi, from

one to five quadrature states can

exist within one frame time. The

minimum state time is 133 µs. If

the resolution is 800 cpi, then up

to ten quadrature states can exist

within a frame time. If the motion

within a frame is greater than

these values, the extra motion

will be reported in the next

frame. The following diagrams

(see Figures 15, 16 and 17) show

the timing for positive X motion,

to the right, or positive Y motion,

up. If a power down via the PD

pin occurs during a transfer, the

transfer will resume after PD is

de-asserted. The timing for that

quadrature state will be increased

by the length of the PD time.

X motion to the right

Y motion up

FIVE OR MORE

XA / YA

XB / YB

133 µs

133 µs

133 µs

133 µs

133 µs

FOUR

XA / YA

XB / YB

133 µs

133 µs

133 µs

267 µs

THREE

XA / YA

XB / YB

133 µs

133 µs

400 µs

TWO

XA / YA

XB / YB

133 µs

533 µs

XA / YA

ONE

XB / YB

Figure 15. Quadrature states per frame (400 cpi mode).

667 µs

~667 µs @ 1500 frames/second

One Frame

11

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