Configuration MC132x
Users Manual Rev. 0.22
22
6.7.6 Frame rate with asynchronous exposure
The frame rate with asynchronous exposure =
Frame rate with synchronous exposure
– (1 / exposure
time).
6.7.7 Asynchronous exposure, shutter control by pulse width
This operating mode is selected with register 6:
:r6[7..4]
= 0xb
Exposure time depends on the width of the external EXP – signal.
6.7.8 Asynchronous exposure, shutter control by timer
This operating mode is selected with register 6:
:r6[7..4]
= 0xf
The asynchronous exposure time is dependent on :r2[9..0]. The exposure timer counts as many lines as
are defined in register :r2[9..0].
Exposure time:
T
B
= 1/F
sens
* 136
•
(1+r2[9..0])
[Sec]
T
B
... exposure time
F
sens
.. sensor clock
example:
sensor clock = 66MHz
value of r2[9..0] = 6
T
B
= 136
•
6
•
15 ns = 12,2 µs
6.8 Firmware
The camera possesses programmable devices, which are working with some firmware packages. New
cameras were programmed with all needed firmware packages and will not need any update.
For customized firmware or additional features the camera offers the possibility to update some of the
firmware versions. The procedure of updating depends on the firmware package.
*
Do not update more than 1 firmware at the same time.
In case of updating more than 1 firmware, please start with application program,
then fpga program follows.
6.8.1 Update firmware microcontroller application
The microcontroller works with 2 programs, the bootloader and the application program.
The bootloader is the basic program of the microcontroller, which ensures some basic functions (e.g.
communication, loading application program) and cannot be changed or updated. In standard use of the
camera it will never work in the bootloader program and the version cannot be read out. It’s only used
for updating the application program.
