VD5377 datasheet(50/88 Pages) STMICROELECTRONICS

No. de pieza	VD5377

Descripción Electrónicos	Ultra-low power motion sensor for optical finger navigation (OFN)

PDF	88 Pages

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Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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50 / 88 page

Basic start-up information

VD5377

50/88

Doc ID 022952 Rev 2

Table 29. X/Y motion data

Addr

(Hex)

Signal name

Bit

Type

Default

(Hex)

Comment

X_MOTION

x_motion

7:0

X motion data since last polling

was done. Note that the internal

accumulator is reduced from this

value every time it is read.

Y_MOTION

y_motion

7:0

Y motion data since last polling

was done. Note that the internal

accumulator is reduced from this

value every time it is read.

OVERFLOW

x_overflow

This register records if the X-

motion integrator has reached its

limit.

0 = No overflow

1 = Overflow

y_overflow

This register records if the Y-

motion integrator has reached its

limit.

0 = No overflow

1 = Overflow

Reserved

no_motion

This bit is asserted as long as

both X/Y integrators are empty

(logical or between motion_w and

motion_y).

0 = Motion

1 = No motion

motion_acc_flush_

5PRWC

If set this bit flushes the motion

accumulators (self cleared).

adapt_cpi_en

If set the CPI is function of the

detected motion

0 = No adaptive CPI

1 = Enable adaptive CPI

Reserved

PRW

Reserved

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