AUTO_LED_CONTROL

Address: 0x43

Access: Read/Write

Reset Value: 0x08

Bit

7

6

5

4

3

2

1

0

Field

RSVD

RSVD

RSVD

RSVD

LED_HI

LED_HI

AUTO_LED_DS

AUTO_LED_DS

Data Type: Bit field

USAGE:

This is a“smart”LED drive feature whereby the LED current is self adjusting between the low and high current

settings (bit 3:1) according to the brightness of the tracking surface if this feature is enable (via clearing bit 0).

The brighter the surface, the lower the LED current will be. If A_LED_DIS (bit 0) is set, this means AUTO_LED

mode is disable, then the LED current determine by LSEL[1:0] setting in LED_CTRL register (0x40).

Bit

Field Name

Description

7:4

Reserved

Reserved

3:2

LED_HI

0x0: Auto LED high current is 15mA

0x1: Auto LED high current is 20mA

0x2: Auto LED high current is 30mA

0x3: Auto LED high current is 36mA

1

LED_LO

0x0: Auto LED low current is 15mA

0x1: Auto LED low current is 20mA

0

AUTO_LED_DIS

0x0: Enable Auto LED current switching

0x1: Disable Auto LED current switching

NOTE:

When AUTO LED is enable, the AUTO_LED current will be switched between low and high current setting

determined by LED_LO and LED_HI [1:0]. If LED_LO current setting is higher than the LED_HI, the current will

be based on the higher setting. For example if the LED_LO is 20mA and LED_HI is 15mA, the AUTOLED current

will be fixed at 20mA.

REST_MODE_CONFIG

Address: 0x45

Access: Read/Write

Reset Value: 0x00

Bit

7

6543210

Field

RM1

RM0

RSVD

RSVD

RSVD

RSVD

RSVD

RSVD

Data Type: Eight bit unsigned integer.

USAGE:

This register is used to set the operating mode of the ADNS-3050.

Bit(s)

Field Name

Description

7:6

RM[1:0]

Sensor Operating Mode

0x00: Normal (default)

0x01: Rest 1

0x02: Rest 2

0x03: Rest 3

5:0

RSVD

Reserved

Read operation to REST_MODE_CONFIG indicates which mode the sensor is in. Write operation into this register

will force the sensor into rest modes (Rest 1, 2 or 3). Write the value 0x40 into 0x45 register to force sensor into

Rest 1, 0x80 to Rest 2 or 0xC0 to Rest 3. To get out of any forced rest mode, write 0x00 into this register to set

back to normal mode.

PixArt Imaging Inc.

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PixArt Imaging Inc.