35

LP_CFG1

Address: 0x23

Access: R/W

Reset Value: Undefined

Bit

76543210

Field

LPC7

LPC 6

LPC 5

LPC 4

LPC 3

LPC 2

LPC 1

LPC 0

Data Type: 8-bit unsigned integer

USAGE:

The value in this register must be a complement of LP_CFG0 register for the laser current to be as programmed,

otherwise the laser is turned off and the LP_VALID bit in the MOTION register is set to 0.

Observation

Address: 0x24

Access: R/W

Reset Value: 0x00

Bit

7

6543210

Field

Reserved

OB6

OB5

OB4

OB3

OB2

OB1

OB0

Data Type: Bit field

USAGE:

The user must clear the register by writing 0x00, waiting an appropriate delay, and read the register. The

active processes will set their corresponding bit indicating the sensor is functioning. This register may be

used as part of a recovery scheme to detect a problem caused by EFT/B or ESD by monitoring the OB[5:0]

status.

Field Name

Description

OB6

0 = chip is not running SROM code

1 = chip is running SROM code

OB[5:0]

Set once per frame

Access: R

Reset Value: Undefined

Bit

76543210

Field

DO7

DO6

DO5

DO4

DO3

DO2

DO1

DO0

PixArt Imaging Inc.

Track-on-Glass Laser Sensor

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PixArt Imaging Inc.