37

Observation

Address: 0x3D

Access: Read/Write

Reset Value: 0x00

Bit

7

6

5

4

3

2

1

0

Field

Reserved

Reserved

Reserved

Reserved

Data Type: Bit field

USAGE: Each bit is set by some process or action at regular intervals, or when the event occurs. The user must clear the

register by writing 0x00, wait an appropriate delay, and read the register. The active processes will have set their cor-

responding bit(s). This register may be used as part of a recovery scheme to detect a problem caused by EFT/B or ESD.

Field Name

Description

OB7

0 = chip is not running SROM code

1 = chip is running SROM code

Reserved

Reserved

OB5

NPD pulse was detected

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

OB1

Set once per frame

OB0

Set once per frame

Reserved

Address: 0x3E

Inverse_Product_ID

Address: 0x3F

Access: Read

Reset Value: 0xF8

Bit

7

6

5

4

3

2

1

0

Field

Data Type: Inverse 8-Bit unsigned integer

USAGE: This value is the inverse of the Product_ID, located at the inverse address. It can be used to test the SPI port.

Pixel_Burst

Address: 0x40

Access: Read

Reset Value: 0x00

Bit

7

6

5

4

3

2

1

0

Field

Data Type: Eight bit unsigned integer

USAGE: The Pixel_Burst register is used for high-speed access to all the pixel values from one and 2/3 complete frame.

See the Synchronous Serial Port section for use details.

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PixArt Imaging Inc.

PixArt Imaging Inc.