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Control and Status Registers Unique to Ladybug2 and Ladybug3 cameras

The following control and status registers (CSR) are used by the Ladybug2 and Ladybug3 cameras:

JPEG_CTRL: 1E80h

Allows the user to specify the JPEG compression rate of the camera, when the camera is operating in a JPEG mode. Increasing the JPEG quality value improves JPEG image quality.

Format:


Field

Bit

Description

Presence_Inq

[0]

Presence of this feature
0: N/A 1: Available

 

[1-5]

Reserved

ON_OFF

[6]

JPEG compression ON_OFF for format_7 mode 0,1,2,3.  If the format-7 mode is 6 or 7, this bit is ignored.
Read: Read the status
Write: Set
0: JPEG compression is OFF
1: JPEG compression is ON 
If this bit = 0, other fields will be read only

A_M_Mode

[7]

Read: Read a current mode
Write: Set the mode
0: Manual, 1: Automatic JPEG quality control

 

[8-23]

Reserved

 

 

Value

[24-31]

JPEG quality value. Valid range: 0x01(1%) to 0x64(100%).
A value of 0 is treated as 60%.
A write to this value in ‘Auto’ mode will be ignored.

JPEG_BUFFER_USAGE: 1E84h

Allows the user to specify the percentage of the image buffer on the PC that is used for JPEG compressed image data, when the camera is operating in a JPEG mode. Specifying a value less than the maximum allows for room in the image buffer to accommodate extra image data, depending on scene variations from frame to frame.

Format:


Field

Bit

Description

Presence_Inq

[0]

Presence of this feature
0: N/A 1: Available

 

[1-24]

Reserved

Value

[25-31]

Value. Valid range: 0x00 (0%) to 0x7F (100%)
A value of 0 is treated as 0x66 (80%). On Ladybug3 firmware v1.2.2.1 or later, a value of 0 is treated as 0x72 (90%).

IMAGE_SELECTION: 1E88h

Allows the user to specify individual images to be transmitted from the camera to the PC.

Format:


Field

Bit

Description

Presence_Inq

[0]

Presence of this feature
0: N/A 1: Available

 

[1-7]

Reserved

Image_En

[8-31]

Enables transmission of individual images. Refer to table below for a breakdown of images by bit.
Write: Transmission enabled or disabled
Read: Read a status
0: Transmission disabled, 1: Transmission enabled
The default value is 000000h, and is interpreted as a value of 888888h when the camera is operating in a mode that does not produce 4 separate Bayer-channel images from each sensor, or FFFFFFh when the camera is operating in a mode that produces 4 separate Bayer channel images from each sensor. In other words, all images are transmitted.
A mask of 888888h is applied whenever the camera is operating in a mode that does not produce separate Bayer-channel images.

Format of Transmit_Enabled field:


Field

Bit

Description

Transmit_Enabled

[8]

Camera 0, Bayer channel 0

 

[9]

Camera 0, Bayer channel 1

 

[10]

Camera 0, Bayer channel 2

 

[11]

Camera 0, Bayer channel 3

 

[12]

Camera 1, Bayer channel 0

 

[13]

Camera 1, Bayer channel 1

 

[14]

Camera 1, Bayer channel 2

 

[15]

Camera 1, Bayer channel 3

 

[16]

Camera 2, Bayer channel 0

 

[17]

Camera 2, Bayer channel 1

 

[18]

Camera 2, Bayer channel 2

 

[19]

Camera 2, Bayer channel 3

 

[20]

Camera 3, Bayer channel 0

 

[21]

Camera 3, Bayer channel 1

 

[22]

Camera 3, Bayer channel 2

 

[23]

Camera 3, Bayer channel 3

 

[24]

Camera 4, Bayer channel 0

 

[25]

Camera 4, Bayer channel 1

 

[26]

Camera 4, Bayer channel 2

 

[27]

Camera 4, Bayer channel 3

 

[28]

Camera 5, Bayer channel 0

 

[29]

Camera 5, Bayer channel 1

 

[30]

Camera 5, Bayer channel 2

 

[31]

Camera 5, Bayer channel 3