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CXD2492R 查看數據表(PDF) - Sony Semiconductor

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CXD2492R Datasheet PDF : 35 Pages
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CXD2492R
Control data/shutter data: [Electronic shutter]
The CXD2492R realizes various electronic shutter functions by using control data D13 to D14 SMD and
shutter data D10 to D19 SVD, D20 to D31 SHD and D32 to D41 SPL.
These functions are described in detail below.
First, the various modes are shown below.
These modes are switched using control data D13 to D14 SMD.
D14 D13
Description of operation
0
0 Electronic shutter stopped mode
0
1
High-speed/low-speed shutter mode
1
0
1
1 HTSG control mode
The electronic shutter data is expressed as shown in the table below using D20 to D31 SHD as an example.
However, MSB (D31) is a reserve bit for the future specification, and it is handled as dummy on this IC.
MSB
LSB
D31 D30 D29 D28 D27 D26 D25 D24 D23 D22 D21 D20
X00111000011
1
C
3
SHD is expressed as 1C3h .
[Electronic shutter stopped mode]
During this mode, all shutter data items are invalid.
SUB is not output in this mode, so the shutter speed is the accumulation time for one field.
[High-speed/low-speed shutter mode]
During this mode, the shutter data items have the following meanings.
Symbol
Data
Description
SVD D10 to D19 Number of vertical periods specification (000h SVD 3FFh)
SHD D20 to D31 Number of horizontal periods specification (000h SHD 7FFh)
SPL D32 to D41 Vertical period specification for high-speed shutter operation (000h SPL 3FFh)
The period during which SVD and SHD are specified together is the shutter speed. Concretely, when specifying
high-speed shutter, SVD is set to "000h". (See the figure.) During low-speed shutter, or in other words when
SVD is set to "001h" or higher, the serial interface data is not loaded until this period is finished.
The vertical period indicated here corresponds to one field in each drive mode. In addition, the number of
horizontal periods applied to SHD can be considered as (number of SUB pulses – 1). However, in the frame
mode A field, it matches (number of SUB pulses + 1). This is a specification for flickerless when the same mode
is repeated. But this change may not occur because of flickerless by the conditions during low-speed shutter.
Note) The bit data definition area is assured in terms of the CXD2492R functions, and does not assure the
CCD characteristics.
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