VD5377 datasheet(74/88 Pages) STMICROELECTRONICS

No. de pieza	VD5377

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

PDF	88 Pages

Scroll/Zoom	100%

Fabricante Electrónico	STMICROELECTRONICS [STMicroelectronics]

Página de inicio	http://www.st.com

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74 / 88 page

I2C register map

VD5377

74/88

Doc ID 022952 Rev 2

FRAME_RATE_

CONTROL

frame_rate_sel

2:0

PRW

Frame rate selection (value for

internal osc running @48MHz)

0 = 0.5 kf/s (2 ms period)

1 = 1 kf/s (1 ms period)

2 = 2 kf/s (500 us period)

3 = 2.5 kf/s (400 us period)

4 = 2.9 kf/s (350 us period)

5 = 3.3 kf/s (300 us period)

6 = 3.6 kf/s (275 us period)

7 = 4 kf/s (250 us period)

frame_rate_ctrl

Frame rate management control

0 = Automatic (1k/2 k/Max f/s

auto frame rate)

1 = Manual (set with

frame_rate_sel reg)

max_auto_frame_

rate

7:5

Maximum frame rate to be

applied in auto frame rate mode

0 = not allowed

1 = not allowed

2 = 2 kf/s (500 us period)

3 = 2.5 kf/s (400 us period)

4 = 2.9 kf/s (350 us period)

5 = 3.3 kf/s (300 us period)

6 = 3.6 kf/s (275 us period)

7 = 4 kf/s (250 us period)

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.

Table 38. I2C register map (continued)

Addr

(Hex)

SIgnal name

Bit

Type

Default

(Hex)

Comment

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