Point Grey Flea3 USB 3.0 Technical Reference Appendix A: Control and Status Registers
Field Bit Description
Abs_Control [1]
Absolute value control
0: Control with the value in the Value field
1: Control with the value in the Absolute value CSR.
If this bit = 1, the value in the Value field is read-only.
In the FlyCapture API, this can also be done by setting the absControl member of the of the desired property
structure to true.
A.4.2 Absolute Value Offset Addresses
The following set of registers indicates the locations of the absolute value registers. Not all cameras use all registers.
To calculate the base address for an offset CSR:
1. Query the offset inquiry register.
2. Multiple the value by 4. (The value is a 32-bit offset.)
3. Remove the 0xF prefix from the result. (i.e., F70000h becomes 70000h)
Offset Name Bit Description
700h ABS_CSR_HI_INQ_0 [0..31] Brightness
704h ABS_CSR_HI_INQ_1 [0..31] Auto Exposure
708h ABS_CSR_HI_INQ_2 [0..31] Sharpness
710h ABS_CSR_HI_INQ_4 [0..31] Hue
714h ABS_CSR_HI_INQ_5 [0..31] Saturation
718h ABS_CSR_HI_INQ_6 [0..31] Gamma
71Ch ABS_CSR_HI_INQ_7 [0..31] Shutter
720h ABS_CSR_HI_INQ_8 [0..31] Gain
724h ABS_CSR_HI_INQ_9 [0..31] Iris
734h ABS_CSR_HI_INQ_13 [0..31] Trigger Delay
73Ch ABS_CSR_HI_INQ_15 [0..31] Frame Rate
7C4h ABS_CSR_LO_INQ_1 [0..31] Pan
7C8h ABS_CSR_LO_INQ_2 [0..31] Tilt
32-bit Offsets for Absolute Value Registers
Each set of absolute value CSRs consists of three registers as follows:
Offset Name Field Bit Description
Base +
000h
Absolute Value
Min_Value [0-31] Minimum value for this feature. Read only.
Base +
004h
Max_Value [0-31] Maximum value for this feature. Read only.
Base +
008h
Value [0-31] Current value of this feature.
Revised 9/27/2012
Copyright ©2011-2012 Point Grey Research Inc.
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