VD5377 datasheet(36/88 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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Key features

VD5377

36/88

Doc ID 022952 Rev 2

6.6

Sunlight timing

In applications where strong external ambient lighting could interfere with tracking such as

direct sunlight, “Sunlight DMIB timing” mode is recommended (0x51 bit 1 = 1). This can

either be set to always on, that is 0x51 = 0x2 or set to change automatically when the

sensor detects high ambient light conditions (that is, 0x51 = 0x1). See Table 20. The default

is “Normal DMIB timing” mode.

Note:

The maximum permitted frame rate in Sunlight timing mode is 3.3 kf/s (see Section 6.7:

Automatic/manual frame rate).

Table 20. Sunlight DMIB timing mode

Addr

(Hex)

Signal name

Bit

Type

Default

(Hex)

Comment

CONTROL

dmib_ctrl_mode

DMIB controller timing switch

mode

0 = Manual (chosen by

dmib_timing register)

1 = Automatic (system auto

sets the dmib_timing mode,

status reported in dmib_timing

dmib_timing

PRW

DMIB controller timing mode

0 = Normal DMIB timing (same

as 376 with double expo time

possible)

1 = Sunlight DMIB timing

Reserved

PRW

Reserved

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