VV5409C001 View Datasheet(PDF) - Vision
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VV5409C001 Datasheet PDF : 39 Pages
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VV5409 CMOS Monochrome Sensor Datasheet (Restricted) Rev 1.0
Register
Index
32
33
34
35
36
37
Bits
Function
Default
Comment
0:0 Fine MSB exposure value
7:0 Fine LSB exposure value
0:0 Coarse MSB exposure value
7:0 Coarse LSB exposure value
3:0 Gain value
1:0 Clock divisor value
0
Maximum mode dependent
302
Maximum mode dependent
0
See Table 6.21
0
See Table 6.22
Table 6.20 : Exposure, Clock Rate and Gain Registers
Gain Binary code Actual signal gain Gain Binary code Actual signal gain
00002
00012
00102
00112
01002
01012
01102
01112
0.500
10002
1.000
10012
0.667
10102
2.000
10112
0.571
11002
1.333
11012
0.800
11102
4.000
11112
Table 6.21 : System Analog Video Gain Values
0.533
1.143
0.727
2.667
0.615
1.600
0.889
8.000
The table above, details all the available gain settings. If the sensor has been configured, as it would be
following a system reset (using RESETB), in either of the CIF video modes, then not all the gain settings will
be available. The lsbit of the gain, written through the serial-interface, is replaced with a fixed 1, the top 3-bits
are preserved. The subsequent gain values available are 1, 3, 5, 7, 9, 11, 13, and 15.
If any of the other 4 video modes is selected, then the control bit which changes the gain-value as above, is
not set, and the full 4-bit gain-value, is passed to the CAB unaltered. It is possible to write to the tms register,
set this bit, and cause the gain settings to be altered.
Clock Divisor Setting
Pixel Clock Divisor
002
2
012
4
102
8
112
16
Table 6.22 : Clock Divisor Values
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VV5409 CMOS Monochrome Sensor Datasheet (Restricted) Rev 1.0
6.6.4 Serial-Interface Setup Registers [108-111]
Register
Index
Bit
Function
Default
Comment
108
0 Re-Initiate Auto-load Sequence
0
Initiate Auto-Load (where used), if
bit high, goes from high to low.
Auto-load token-bit must be high for
auto-load to be triggered
108
1 Auto-load Token
No Token / Token
0
Initiate, if low to high transition on bit
i.e. auto-load token received. Reset
to zero on completion of auto-load
i.e. token passed on to next device
7:3 unused
0
Table 6.23 : [108] - Serial-Interface Setup Register, sf_setup
Register
Index
Bits
Function
Default
Comment
109
7:0 next_dev_addr
-
Serial-Interface Address of next Device
in auto-load daisy chain (where used).
Default is the sensor’s 7-bit serial
address plus 4
Table 6.24 : [109] - Serial Address of next Device in Daisy-Chain
6.6.5 System Registers -Addresses [112 - 127]
[112 - 114] - Black Calibration Registers
The sensor is equipped with an automatic function which continually monitors the output black level, and re-
calibrates, if it has moved out of programmable range. The user is advised to disable the automatic function
before attempting to write any of these parameters.
Register
Index
112
113
114
Bits
Function
Default
Comment
3:0 bcal_window
7:0 bcal0
7:0 bcal1
0
Black Level Monitor/Calibration
Window Sizes
128
DAC B0 value
128
DAC B0 value
Table 6.25 : Black Calibration Registers
Register
Index
Bit
Function
Default
Comment
1:0 bcal_win
0
Black Calibration monitor window size
Table 6.26 : [112] - Black Level Monitor/Calibration Window Sizes
Commercial In Confidence
cd38041a.fm
08/10/98
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