26

Self_Test

Address: 0x10

Access: Write

Reset Value: NA

Data Type: Bit field

USAGE: Before performing system self test, reset the chip. Then, set the TESTEN bit in register 0x10 to start the system

self test. The test takes 250ms. During this time, do not write or read through the SPI port. Results are available in the

CRC0-3 registers. After self-test, reset the chip again to start normal operation.

Bit

7

6

5

4

3

2

1

0

Field

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

TESTEN

Field Name

Description

TESTEN

Enable System Self Test

0 = Disabled

1 = Enable

Reserved

Address: 0x11

Configuration2_bits

Address: 0x12

Access: Read/Write

Reset Value: 0x28

Data Type: Bit field

USAGE: Register 0x12 allows the user to change the configuration of the sensor. The RES bit allows selection between

400, 800, 1200 and 1600 cpi resolution.

Bit

7

6

5

4

3

2

1

0

Field

0

Reserved

Reserved

Reserved

Reserved

Reserved

Field Name

Description

RES[1:0]

Sets resolution

00 = 400

01 = 800

10 = 1200

11 = 1600

Reserved

Address: 0x1b

All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.

PixArt Imaging Inc.

PixArt Imaging Inc.

ADNS-7550 Integrated Molded Lead-Frame DIP Sensor