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CISR - Capture Interface Status Register (clear these flags by writing a one to the corresponding bit)
bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
Setting
X X X X X X X X X X X X X X X X 0
FTO
FIFO time-out. 1=Time-out occurred.
FDAV_[2:0]
FIFO Channel X data received 1=Received data available for respective channel.
FEMPTY_[2:0] FIFO Channel X empty. 1=Respective channel.
EOL
End Of Line. 1=End of line detected.
PAR_ERR
Parity Error in serial sync string. 1=Parity error detected.
CQD
Camera Interface Quick Disable. 1=Capture interface has been quick disabled.
CDD
Camera Interface Disable Done. 1=Capture interface has been disabled and active video frame is complete.
SOF
Start Of Frame. 1=Capture interface has detected the start of a frame.
EOF
End Of Frame. 1=Capture interface has detected the end of a frame.
IFO[2:0]
FIFO overrun in corresponding channel. 1=Respective FIFO channel overrun detected.
CIFR - Capture Interface FIFO Control Register
bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
Setting
X X 1
0
0
FLVL2
d
Dynamic value that changes as needed for image capture control.
FLVL[2:0] FIFO level 0, 1, and 2 can be set to buffer 0 to 128, 0 to 64, and 0 to 64 bytes, respectively
THL_0
Threshold Level for FIFO channel 0 (DMA requests are generated when this value is reached). 00-32 bytes; 01-64
bytes; 10-96 bytes; 11 - reserved.
RESET_F Reset input FIFO. 0=no effect; 1=all input FIFOs (and this bit) are cleared.
FEN[2:0]
FIFO enable 0, 1, and 2. 0=corresponding FIFO disabled; 1=corresponding FIFO enabled.
Illumination/Aimer Control
There are two primary methods of controlling the total power draw of the illumination and aiming systems: reducing the power,
or pulsing the Illumination On or Aimer On control signals.
Note: Reducing the current/power also reduces the intensity of the illumination. This reduction in light levels directly impacts the
reading attributes of the image module. A reduction in light levels reduces reading distance to target and DOF
performance.
Aimer LEDs are typically not on for prolonged periods of time, therefore a power savings may not be seen by pulsing the Aimer
On control signal.
Pulsing the Illumination On signal can create a large reduction because the illumination LEDs are on during the entire frame time
(24 ms to 33 ms). The control line must be pulsed at a rate that is less than the line rate so the LEDs are flashed on and off many
times per line, and for the same number of times each line. If this is not done, light and dark bands appear throughout the image,
reducing reading and image taking performance.
Aimer Modes
Interleaved Mode
Interleaved Mode is characterized by the illumination LEDs and aiming LEDs/Laser being turned on alternately, or in an
interleaved fashion (illumination on, aimer off/illumination off, aimer on). In this mode, the aimer flashes on and off. Interleaved
Mode is the most efficient for power conservation and heat reduction.
2 - 10
Reserved
0
0
0
0
1
0
0
0
FLVL1
0
0
0
0
0
0
0
1
0
0
0
0
FLVL0
IMAGETEAM™ 4X00 Series Integration Manual
8
7
6
5
4
3
0
0
0
0
0
0
0
0
8
7
6
5
4
3
0
0
0
X X 0
1
d
2
1
0
0
0
0
2
1
0
0
0
1
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